Q1: Rounding 4,78,942 to the nearest thousand gives ______.
Ans: 4,79,000
As 942 is greater than 500 so we round up
Q2: Convert 7,300,000 into the Indian number system.
Ans: 73,00,000 (Seventy-three lakh)
Q3: Write the following numbers in Indian Place Value Notation:
One crore one lakh one thousand ten
Ans: 1,01,01,010
Step-by-step (Indian Number System):
One crore = 1,00,00,000
One lakh = 1,00,000
One thousand = 1,000
Ten = 10
Now add them all, we get: 1,01,01,010
Q4: True or False: 1 crore = 100 lakhs
Ans: True
1 crore = 100 lakhs.
Q5: Write the numbers 6,345,210 in words using the International system.
Ans: Six million three hundred forty-five thousand two hundred ten
Q6: Round 3,19,612 to the nearest ten thousand.
Ans: 3,20,000
(Since the thousands digit is 9, we round up)
Q7: Using any digits from 0 to 9 without repeating, write the greatest 5-digit number that is a multiple of 5.
Ans: A number is divisible by 5 if it ends in 0 or 5. For maximum value, use the largest digits: 9, 8, 7, 6. Case 1: Ends in 5: 98765 (digits 9, 8, 7, 6, 5, distinct, divisible by 5). Case 2: Ends in 0: 98760 (digits 9, 8, 7, 6, 0, distinct, divisible by 5). Compare: 98765 > 98760 (5 > 0 in units). So, 98765 is the greatest 5-digit number that is a multiple of 5.
Q8: Calculate the product in a quick way
116 x 5
Ans:
116 x (10/2) as 10/2 = 5 58 x 10 580
Q9: Arrange the following in ascending order: 45,210; 54,120; 40,250; 49,500
