Text Book Solutions All Class

IntroductionImagine you’re exploring a world full of shapes, patterns, and fun designs. 

Soni and Avi are going to the famous Surajkund fair in Faridabad with their grandparents, where the fair is filled with exciting stalls, games, and activities. In this chapter, we will learn about the things they see at the fair, like symmetrical objects, patterns, and making malas, while also discovering the magic of shapes and directions that make everything more organised and exciting! 

In this chapter, we will learn about symmetry, patterns, and how to read maps—just like Soni and Avi!

Understanding Symmetry

Soni: “Dadaji, look at that butterfly! Its wings look exactly the same!”
Dadaji: “That’s because it is symmetrical, Soni! If you draw a line down the middle, both sides will match like a mirror image.”

Now, let’s understand What is Symmetry?Symmetry means that a shape can be divided into two identical parts, like a mirror image.

Example:

• A butterfly – If you draw a line down the middle, both wings look the same.
• An apple  – If you cut an apple, both halves look the same.

Try out yourself:
Look at the shape of a heart. If you draw a line down the middle, what do you notice? Do both sides of the heart look the same?

Solution:

When you draw a line down the middle of the heart, you’ll see that both sides of the heart look identical. This shows symmetry, as the two halves are mirror images of each other!

Line of Symmetry:A line of symmetry is an invisible line that splits a shape into two equal halves.

Fun Fact: Some shapes have more than one line of symmetry!

For Example:

• Square: Has four lines of symmetry.
• Heart: Has one line of symmetry.
• Butterfly: Has one line of symmetry.

Let’s explore more objects and understand their symmetry.

• So, the three figures in the images above are symmetric, meaning that if cut along the dotted line, both halves will match when folded.
• While two figures when cut along the dotted line and the parts do not align when folded so they are asymmetric.

Try yourself:Which of the following shapes has three lines of symmetry?

• A.Square
• B.Rectangle
• C.Equilateral Triangle
• D.Circle

View Solution

Mirror Images

When we look into a mirror, we see our reflection! The right side of our body appears on the left, and the left side appears on the right.

 Try This: Stand in front of a mirror and raise your right hand. What happens? The mirror shows it as your left hand!

Mirror Images of Capital Letters and Numbers

1. Certain letters and numbers have mirror images that look exactly like their originals.
2. For example, letters like A, H, M, and numbers like 0 and 8 have mirror images that are the same as their original forms.

• The key concept is that if an object will be symmetric, its two halves will be identical or mirror each other.

Examples of Non-Symmetrical Letters and Numbers

• Not all letters and numbers have symmetrical mirror images.
• For instance, letters like B, C, D and numbers like 2, 3, 5 do not have mirror images resembling their original forms.

This contrast helps clarify the idea of symmetry.

Try out yourself:
Is the letter “M” symmetrical when you look at it in the mirror? What about the letter “C”?

Solution:
The letter “M” looks the same in the mirror, as it has symmetrical mirror images. However, the letter “C” does not look the same in the mirror, showing that “C” is not symmetrical.

Making Malas (Bead Necklaces)

At a bead stall, Soni and Avi see a man and a woman making beautiful malas  (necklaces).

Question:
How can you make a simple mala (necklace) using 8 beads?

Solution:

To make a simple mala, take 8 beads—4 of one color and 4 of another. String them in a pattern like red-blue-red-blue, and tie a knot. Your mala is ready to wear!

Rangolis and PatternsSoni and Avi arrive at a stall from Tamil Nadu, where they see lovely kolam designs being created. Kolam is a traditional art that involves drawing detailed patterns on the ground, often using rice flour. They notice that some of the rangolis are symmetrical, while others are not. They learn to make their own symmetrical rangolis by drawing lines that split the designs into two matching halves.

Try yourself:

Which of the following letters has a mirror image that looks the same as its original form?

• A.B
• B.D
• C.A
• D.G

View Solution

Exploring the Fair with a Map

Soni and Avi are visiting Surajkund in the Faridabad district of Haryana. This chapter teaches how to use maps effectively. Soni and Avi navigate the fair using a map, learning to interpret signs and symbols to find places like the restaurant, shops, and play area.

Let’s Understand using an example:

While enjoying the Surajkund fair, Soni and Avi realised they had lost track of their Dada and Dadi. Suddenly, they heard an announcement: “Soni and Avi’s Dada and Dadi are waiting at the Chaupal for them.”

Excited to reunite, Soni and Avi decided to follow the directions on the map to reach the Chaupal.

• They started by walking on the blue lane.
• Next, they turned right onto the green lane.
• Soon, they saw a restaurant on their right, but they remembered not to stop there.
• They took a left towards the red lane.
• After that, they found the golden lane and took the first left turn, passing colourful stalls selling exciting items.
• Continuing past the stalls, they aimed to find the Chaupal and meet Dada and Dadi.

Soni and Avi’s visit to the Surajkund fair was not just enjoyable but also a valuable learning experience. They explored concepts like symmetry, pattern making, and using maps for navigation. The fair was vibrant and thrilling, showcasing the beauty of symmetry in their surroundings.

Let’s Practise

1.Which of the following objects has more than one line of symmetry?

(a) Heart
(b) Butterfly
(c) Square
(d) Letter B

Answer: c) Square (A square has four lines of symmetry.)

2.What happens when you look at your reflection in a mirror?

(a) Your image flips upside down
(b) Your left side appears on the right and vice versa
(c) Your size changes
(d) The reflection looks exactly like the original without any change

Answer: b) Your left side appears on the right and vice versa (A mirror reverses left and right, not upside down.)

3.Which of these letters has a symmetrical mirror image?

(a) R
(b) M
(c) G
(d) P

Answer: b) M (Letters like A, H, M have symmetrical mirror images.)

4.What is the correct sequence to create a symmetrical bead mala?

(a) Red, Red, Blue, Blue, Red, Red, Blue, Blue

(b) Red, Blue, Red, Blue, Red, Blue, Red, Blue

(c) Red, Red, Red, Blue, Blue, Blue, Red, Blue

(d) Blue, Blue, Red, Red, Blue, Red, Blue, Red

Answer: b) Red, Blue, Red, Blue, Red, Blue, Red, Blue (This pattern is symmetrical because it repeats evenly on both sides.)

5. How did Soni and Avi find their way to the Chaupal at the fair?

(a) By asking people for directions

(b) By following a map and recognizing symbols

(c) By walking randomly until they found it

(d) By using a mobile GPS

Answer: b) By following a map and recognizing symbols (They used a map to navigate the fair.)

Chapter notes

Introduction

Imagine you’re getting ready for school, the sun shining brightly outside. Have you ever wondered how we know what time it is? Well, today, we’re going to learn all about it in our chapter, “Time Goes On.” We’ll talk about calendars, and birthdays. Let’s explore time together and have lots of fun!Let’s Understand With a Story

Once upon a time, there was a little girl named Mia. Mia loved playing outside with her friends and going on adventures. One day, her mom said they were going to have a special picnic in the park on Wednesday.

“But how will we remember when Wednesday is?” Mia asked, looking puzzled. Mom smiled and pointed to a colourful calendar hanging on the wall. “We’ll use this!” she said.

 She showed Mia the days of the week and the names of the months. Then Mom circled “Wednesday, 22nd May” on the calendar.”Now we know when our picnic is!” Mom said cheerfully. And so, Mia learned that the calendar was like a magical guide that helped her family plan fun adventures together.

Try yourself:What is one of the key functions of a calendar?

• A.Keeping track of important dates and events
• B.Predicting the weather
• C.Calculating mathematical equations
• D.Planning grocery shopping trips

View SolutionUnderstanding Calendars

Imagine you have a special book that helps you know what day it is, plan events, and remember important dates like birthdays and holidays. This special book is called a calendar!

Days and Months

• A year has 365 days, but a leap year has 366 days (every fourth year).
• In a leap year, February has 29 days instead of 28.
• There are 12 months in a year and they may have 28,29,30 or 31 days.
• Months with 31 days are: January, March, May, July, August, October, and December. 
• Months with 30 days are: April, June, September, and November.
• February: 28 days (29 days in a leap year).
• A year has 52 weeks.
• Each week has 7 days:Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday.

Writing Dates

• When we write a date, we first write the number of the day, then the name of the month, and finally the year. 
• We call this the day-month-year format.
• We can use dots or slashes to separate them.
  For example, if it’s May 6, 2024, we can write it as 6.05.2024 or 6/05/2024.

Examples

• If someone tells you to meet them on 25th June, you’ll know it’s the 25th day of June.
• On your birthday, your family might write the date like this: 10.12.2013 (10th December 2013) to remember your special day!

Isn’t it cool how the calendar helps us keep track of time and remember special moments?Age Fun

Family Ages

Let’s talk about Mia’s family.

• Mia is 8 years old, and her mom is 32 years old. 
• When Mia’s mom was born, her grandma was already 50 years old. Can you guess her grandma’s age?
• Yes, you guessed it right! Mia’s grandma is 58 years old now!
• When Mia was born her Grandma was 50 years old , now her age will be 50 + 8 = 58 years old.

Siblings’ Ages

Consider Lily and her brother. 

• Lily is 10 years old. If she is twice as old as her brother, can you guess the age of his brother?
• Since Lily is twice as old as her brother, her brother is half her age. That means her brother is 5 years old.

Lily’s Birth Certificate

Birth Certificate is a special document which contains important information about Lily’s birth, like her birth date and her parents’ names, making it a special keepsake for her family.

• Lily was born on 9th May 2014. 
• To find out her age on her birthday in 2024, we count the years from when she was born to 2024. That’s 10 years!
• To find out her age in 2030, we count the years from when she was born to 2030. That’s 16 years!
• Lily’s birth certificate was issued 9 days after she was born, on 18th May 2014.

These simple examples help us understand how ages are connected within families and how we can figure out different ages and dates using basic math.Time

Time is a way to measure and quantify the duration or sequence of events. It’s a concept that helps us understand when things happen, how long they last, and in what order they occur.

Try yourself:

What is the total number of days in a leap year?

• A.365 days
• B.366 days
• C.364 days
• D.367 days

View SolutionWhat is a Clock?

A clock is used to measure time. A clock has two hands— the short hand called the hour hand and the long hand called the minute hand.

• An hour (h) and minute (min) are the standard units for the measurement of time.
• The hour hand shows the hour and the minute hand shows the minutes before and after the hour.
• The minute hand goes around the clock once in 1 hour. The hour hand goes around the clock once in 12 hours.
• When the minute hand moves all the way round the clock, i.e., from 12 to 12, an hour passes.
  Always remember that:

60 minutes = 1 hour  
1 day = 24 hours

Telling Time to the Half-Hour

In the clock shown alongside, the hour hand is between 9 and 10 and the minute hand points to 6. The coloured part shows that the long hand or minute hand has moved halfway round.
When the minute hand moves half way round the face of the clock, half an hour has passed and we say that it is half past nine.∴ Half past nine can also be written as 9:30.

60 minutes = 1 hour
30 minutes = One-half of an hour

Observe the following clocks

Telling Time to the Nearest Five Minutes

• When the hour hand (short hand) moves from one digit to the other, 1 hour passes.
• When the minute hand (long hand) moves from one digit to the other, 5 minutes pass.
• Count the minutes all around the clock by 5s, starting at 12.
  The numbers outside the clock show the count.
• So, we skip count by 5s to find the time to the nearest five minutes. There are many ways of reading and telling the time.

When the minute hand has moved past 6, we say the time in the following two ways:

1. First Way : The hour hand is between 4 and 5, so  the time is after 4 o’ clock. The minute hand is at 7. Starting at 12 and counting ahead by 5s to 7, we get 35 minutes.Thirty-five minutes past 4 or 4:35
So, we say that the clock shows the time 35 minutes after 4 or 35 minutes past 4.

2. Second Way: The hour hand is between 4 and 5, so the time is before 5 o’ clock. The minute hand is at 7. Starting at 12 and counting back by 5s to 7, we get 25 minutes. We write 25 minutes to 5 to tell the time because there are 25 minutes left to 5 o’ clock.Twenty-five minutes to 5

Examples:

Telling Time to the Quarter Hour

Let us read time on the clocks given below:
The minute hand has moved one quarter (one-fourth) of the circle in moving from 12 to 3. So, 1 / 4 of an hour = 15 minutes.

• The time shown on the clock is 12:15 or Fifteen minutes past twelve, which we generally read as quarter past twelve.
• Both the clocks A and B given show the same time which can be read in clock A as: 8:45 or Forty-five minutes past 8.
• In clock B, the same time can be read as: Fifteen minutes to nine or Quarter to nine.

Examples:

Try yourself:What time is shown on the clock when the minute hand is at 9 and the hour hand is between 2 and 3?

• A.2:45
• B.3:15
• C.2:30
• D.3:30

View SolutionLet’s Practice

1. Observing the calendar of month November 2022 given below, Can you answer the following questions:

(i) Total number of Sundays in November month  ______________________________.
(ii) Write the dates in this month that fall on Thursday ___________________________.
(iii) Three days after 22nd November  is  _________________November . The day on this date is _____________________.
(iv) A school closes on November 7 for 15 days. The date on which the school will open is _____________________.

Answer:

(i) No. of Sundays = 5
(ii) The dates that fall on Thursday in this month are 5, 12, 19, 26.
(iii) Three days after 22nd November is 25th November , and the day on this date is Wednesday.
(iv) A school closes on November 7th for 15 days. The date on which the school will open is 22th November .

2. Write the time that is shown in each clock :

Answer: 

In summary, understanding the structure of a year, months, and weeks , knowing about time , age helps us organize time efficiently and recognize important patterns like leap years, which occur every four years.

Introduction 

Imagine you are helping your family with a garden.  You might be counting the number of saplings of plants or you could be using your pocket money to buy your favorite snacks. 

How do you keep track of everything? 

This is where addition and subtraction come to the rescue!—our “give and take” math heroes!  In this chapter, we will learn how adding and subtracting can help us solve problems we face every day. Whether it’s counting saplings, managing money, or figuring out how much more we need to finish a task. 

Let’s start this exciting journey where numbers become our friends. 

Together, we will discover the magic of give and take! 

Let’s try to understand this using an example:

Once upon a time in a colourful village, there lived a farmer named Kishan.  Kishan loved taking care of plants and had a big nursery where he grew beautiful saplings. In the month of August, he had 456 saplings of various plants ready to be shared with the villagers. The villagers often visited Kishan to get saplings for their gardens.

One sunny day, Kishan decided to distribute some of his saplings to help his friends in the village. He happily gave away 63 saplings to those who needed them. Kishan was excited to see his friends so happy, but he also wanted to know how many saplings he had left in his nursery after giving some away.

To find out how many saplings Kishan has left,  Here’s how we can solve it step by step:

• Kishan started with 456 saplings.
• He distributed 63 saplings to his friends.
• So to find out how many saplings are left, we need to subtract the saplings given away from the total saplings:
  = 456 − 63
  =393 Saplings

Kishan felt happy knowing that he could still take care of many more plants while helping his friends grow their gardens. And so, he continued to nurture his nursery, always ready to share the beauty of nature with others.

Try yourself:

What is the result of subtracting 29 from 87?

• A.56
• B.58
• C.58
• D.60

View Solution

Concept of Addition and Subtraction Using Box Diagram

Kishan got an order of 230 saplings from a school. He packed 75 saplings. How many Saplings more do he need to pack ?

For finding the saplings he is left with we will subtract 75 from 230 using the Hundreds (H), Tens (T), and Ones (O) columns.

Step 1: Draw a Box Diagram
In the box diagram, we’ll break down the numbers into Hundreds (H), Tens (T), and Ones (O).
Total saplings ordered: 230
Saplings already packed: 75

Step 2: Perform Subtraction Using the Box Diagram

1. Start with the Ones column:
We cannot subtract 5 from 0 (0 < 5), so we borrow 1 ten from the Tens column.
The 3 tens become 2 tens, and now we have 10 ones in the Ones column.
Now, subtract the Ones:
10 ones − 5 ones = 5 ones

2. Move to the Tens column:
After borrowing, we have 2 tens. Now, we subtract 7 tens from 2 tens.
Since 2 tens are smaller than 7 tens, we borrow 1 hundred from the Hundreds column.
The 2 hundreds become 1 hundred, and now we have 12 tens.
Now, subtract the Tens:
12 tens − 7 tens = 5 tens

3. Move to the Hundreds column:

We now have 1 hundred left, and since there’s nothing to subtract from it, it stays the same.

Step 3: Final Box Diagram
Combining all above steps we get 1 Hundred , 5 Tens , 5 ones which makes 155 Saplings . Hence Kishan needs to pack 155 saplings more to complete the order of 230 saplings.

Try yourself:

Kishan got an order of 320 pens from a store. He already packed 145 pens. How many more pens does he need to pack?

• A.175 pens
• B.185 pens
• C.135 pens
• D.165 pens

View Solution

Concept of Addition and Subtraction Using Number Line

One sunny day, Ria went to the orchard with a basket to collect fruits. First, she picked 40 apples and put them in her basket. Then, she found a tree with juicy oranges and picked 20 more. She wanted to know how many fruits she had in total.

She sat under the tree and used her number line to find out:

• She started at 40 and took a big jump of 20 to reach 60 .
• Ria happily counted, “Wow! I now have 60 fruits in my basket!”

Later, Ria decided to share some of her fruits with her little brother. She gave him 10 fruits. To figure out how many fruits were left, she used her number line again:

• She started at 60 and jumped back 10 to 50.
• Ria smiled and said, “I have 50 fruits left now!”

And with that, Ria and her brother enjoyed their delicious fruit feast!

Money and Real – Life Transactions 

These days we use money in exchange for things we need. Notes and coins come in different values which are used to buy different things.

For example:  one 10-rupee note can buy one Hawa Mithai or ten toffees.

Therefore,  one hawa mithai costs more than a toffee.

Salma buys two bottles of milk for ₹ 100. Kiran buys a basket of pomegranates for ₹ 100.

Can you estimate what costs more, a milk bottle or a pomegranate?

Raman is a friendly shopkeeper in the village who loves helping his customers. One day, his regular customer, Meera, came to his shop to buy some groceries.

Meera picked up the following items:

• A packet of rice for ₹50
• A bottle of oil for ₹30

Meera happily gave Raman a ₹100 note. Now, she wanted to know how much change she would get back.

Raman calculated using notes again:

He first took ₹80 from the ₹100 note, using:

8 ten-rupee notes (₹80)

The remaining change was ₹20, which he gave back to Meera in: 2 ten-rupee notes (₹20)

“Here’s your change of ₹20, Meera!” Raman said with a smile.

Estimation

Estimating values is important because it helps us quickly understand and make decisions about quantities without needing exact numbers, making math and real-life situations easier to handle.
Let’s take a number : 156 + 34

To estimate the sum of 156 and 34, we can round the numbers to the nearest ten and then add them. Here’s how to do it step by step:

Steps to Estimate:

1. Round 156: The nearest ten is 160 (because 156 is closer to 160 than to 150).

2. Round 34: The nearest ten is 30 (because 34 is closer to 30 than to 40).

3. Add the Rounded Numbers: Now we add the rounded numbers: 160 + 30

4. Calculate: 160 + 30 = 190

Try yourself:Estimate the sum of 78 and 25.

• A.90
• B.110
• C.100
• D.120

View Solution

Comparing Numbers

Comparing different problem statements helps us understand relationships between numbers without necessarily calculating their exact values. This skill is useful for estimating and making decisions based on the information given.

Let’s Understand comparing using an example:

• 373 + 23  and  240 + 10

After Adding Both the Numbers we get, 

373 +23 = 396

and 240 + 10 = 250, which shows 373 + 23 is more than 240 + 10

• 800 – 8 and  373 + 40

After solving Both the Numbers we get, 

800 – 8 = 792

and 373 + 40 = 413 , which shows 800 – 8 is more than 373 + 40

In conclusion, the chapter “Give and Take” highlights the practical application of addition and subtraction in everyday transactions, particularly in managing money. Beyond shopping, these operations are essential for budgeting, calculating distances, tracking time, and solving problems in various contexts, empowering us to make accurate calculations in our daily lives.

Chapter notes

IntroductionImagine you’re at home, maybe in your kitchen, surrounded by cups, bowls, and bottles. Have you ever wondered how much water each one can hold? That’s what we’re going to explore in “Filling and Lifting”! We’ll learn about measuring how much liquid containers can hold and how heavy things are. Let’s get ready for a fun learning adventure!

Let’s Understand With a Story

Once upon a time, in Maya’s house, there was a special milk party. Rita, Monu, and Niti gathered around the table, each with their own glass of juice. 

• Rita’s glass was big and round, like a bright sun.
• Monu’s glass was medium-sized, like a glowing moon. 
• Niti ‘s glass was small and cute, like a twinkling star.

After finishing their milk, Rita’s clever sister had an idea. She poured the milk from each glass into three identical glasses. What a surprise! Even though the glasses looked the same, they didn’t all hold the same amount of milk!

• Rita’s big glass poured the most milk,  Monu’s glass had a good amount of milk too, but Niti’s glass had the least amount of milk.
• Ritu smiled proudly, “I drink so much milk!” Monu grinned and said, “I drink more milk than you!” Niti laughed and said, “I drink milk in a big glass!”
• And that’s how they found out who drank the most milk. It was a fun milk adventure they would always remember with laughter.

Measuring Capacity – “How much?”

• When we talk about how much liquid a container can hold, we call it its capacity. 
• We measure capacity in two main ways: litres and millilitres.

Imagine you have a big bottle of juice.
The amount of juice it can hold is measured in litres, written as “L”. But if you look closely at a bottle of medicine or a juice box, you might see a number followed by “mL”. That stands for millilitres, which is a smaller unit of measurement.

•  1 litre is the same as 1000 millilitres! So, if you have a litre of juice, that’s like having 1000 tiny millilitres.
• To understand how small a millilitre is, think about a teaspoon. It can hold about 5 millilitres of liquid. 

Teaspoon

And a tablespoon can hold about 10 millilitres!

Tablespoon

The standard-sized containers used for measuring liquids are shown.

So, next time you see a jug marked with litres or a bottle with millilitres, you’ll know exactly how much liquid it can hold. It’s like solving a fun puzzle about liquids!

Understanding More Than and Less Than

To understand more than and less than in terms of volume or capacity, think about it like this:

• More than (>) means the first container can hold a larger amount of water compared to the second container.
• Less than (<) means the first container can hold a smaller amount of water compared to the second container.

More Than

Imagine you have two containers, one labeled A and the other labeled B. Let’s say container A can hold 500 milliliters (ml) of water, and container B can hold 750 ml of water.

• If we say that container B can hold more water than container A, it means that the capacity of container B (750 ml) is greater than the capacity of container A (500 ml).
• In this case, we can write it as: 750>500or “750 milliliters is more than 500 milliliters.”

Less Than 

Now, let’s reverse the situation. Suppose container A can hold 1 liter of water (1000 ml), and container B can hold 750 ml of water.

• If we say that container B can hold less water than container A, it means that the capacity of container B (750 ml) is smaller than the capacity of container A (1000 ml or 1 liter).
• In this case, we can write it as: 750<1000 or “750 milliliters is less than 1000 milliliters (1 liter).”

These concepts help us compare the capacity of different containers or quantities of liquid, which is important in many everyday activities like cooking, measuring drinks, or understanding the size of containers.

Measuring Weight – “Heavy or Light?”

Imagine Chintu holding three heavy textbooks, each weighing 1 kilogram, and a light pencil box weighing 500 grams. His hand with the textbooks goes lower because they’re heavier. This is how we can compare things like to see which is heavier or lighter.Long ago, people didn’t have fancy scales to measure the weights of things, like today. They used rocks or stones to measure weight! They added or took away rocks until things balanced 0.

But now, we have grams and kilograms. 

• Grams, which is the standard unit of weight in the metric system, are for small things, like toys or fruit, and 
• Kilograms are for big things, like people or bags of rice.
  

Please note that, 1 kilogram = 1000 grams.

Some standard weights are given as follows:-

Try yourself:

Which of the following items might weigh more or less than 1 kilogram?

• A.A small apple
• B.A bag of rice
• C.A pencil
• D.A small book

View Solution

Understanding “More Than” and “Less Than” in Weight

To understand more than and less than in terms of weight or mass, think about it like this:

• More than (>) means the first object has a higher weight compared to the second object.
• Less than (<) means the first object has a lower weight compared to the second object.

These concepts help us compare the weights of different objects, which is important in various activities like measuring ingredients in cooking, comparing the weight of items in a store, or understanding the capacity of different vehicles to carry weight.

More Than in Weight/Mass:

Imagine you have two Watermelon. Let’s say one  watermelon  weighs 500 grams, and other weighs 750 grams.

• If we say that second watermelon weighs more than first one, it means that the weight of second watermelon (750 grams) is greater than the weight of first watermelon (500 grams).
• In this case, we can write it as: 750>500 or “750 grams is more than 500 grams.“

Less Than in Weight/Mass:

Now, let’s reverse the situation. Suppose a watermelon weighs 1 kilogram (1000 grams), and a bag of rice weighs 750 grams.

• If we say that watermelon  weighs less than Bag of rice , it means that the weight of watermelon (750 grams) is smaller than the weight of Bag of rice  (1000 grams or 1 kilogram).
• In this case, we can write it as: 750<1000 or “750 grams is less than 1000 grams (1 kilogram)

Let’s Practice!

Question: Look at the picture and tick the appropriate word.

(a) The mug holds a litre/half litre water.

(b) The glass holds a litre/half litre/quarter litre of water.  View Answer

Question: Can you guess which of these things might weigh more or less than 1 kilogram? Put a check mark (✔️) in the right box.  View Answer