Q1: Are the notes and coins in Option A equal in value to those in Option B? State True or False.
(i) Option A:
Option B:
Ans: True
(ii) Option A:
Option B:
Ans: False
(iii) Option A:
Option B:
Ans: True
Q2: Solve the following Word Problems:
(i) Samantha saved ₹20 from her pocket money each week. If she saved for 8 weeks, how much money did she save in total?
Ans: Samantha saved ₹20 x 8 weeks = ₹160 in total.
(ii) Jason bought a video game for ₹400. He sold it to his friend for ₹250. How much money did Jason lose or gain from this transaction?
Ans: Jason lost ₹400 – ₹250 = ₹150 from this transaction.
(iii) A bakery sold 120 cupcakes in the morning and 80 cupcakes in the evening. How many cupcakes did they sell in total for that day?
Ans: 120 cupcakes + 80 cupcakes = 200 cupcakes in total.
(iv) Emma had ₹100. She spent ₹35 on a new dress and ₹20 on a book. How much money does Emma have left?
Ans: ₹100 – ₹35 – ₹20 = ₹45 left.
(v) A farmer had 200 apples. He sold 150 apples in the market. How many apples does he have left?
Ans: 200 apples – 150 apples = 50 apples left.
Q3: Estimate the answers to the nearest hundred.
(i) Number Sentence: 156 + 34
Ans: 200
156 is close to 200, and 34 is close to 0 when rounded to the nearest hundred. Adding them gives an estimated answer of 200.
(ii) Number Sentence: 125 – 15
Ans: 100
125 is close to 100, and 15 is close to 0 when rounded to the nearest hundred. Subtracting them gives an estimated answer of 100.
(iii) Number Sentence: 105 + 195
Ans: 200
105 is close to 100, and 195 is close to 200 when rounded to the nearest hundred. Adding them gives an estimated answer of 300.
(iv) Number Sentence: 205 + 215
Ans: 400
Both numbers are close to 200 when rounded to the nearest hundred. Adding them gives an estimated answer of 400.
(v) Number Sentence: 500 – 395
Ans: 100
500 is close to 500, and 395 is close to 400 when rounded to the nearest hundred. Subtracting them gives an estimated answer of 100.
(vi) Number Sentence: 765 – 567
Ans: 200
765 is close to 800, and 567 is close to 600 when rounded to the nearest hundred. Subtracting them gives an estimated answer of 200.