Page 74 - Revised Maths Wisdom Class - 3

72 MATHS

Example 3: A box has a dozen chocolates. How many chocolates are there in 47 such
boxes? H T O

Solution: 1 dozen = 12 4 7
× 1 2
Number of chocolates in 1 box = 12
9 4
Number of chocolates in 47 boxes = 47 × 12 = 564 4 7 0

Hence, there are 564 chocolates in 47 boxes. 5 6 4

Exercise 5G
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1 In a society, a block has 172 fl ats. How many fl ats will 15 such blocks have?

2 Shruti reads 15 pages of a book in 1 hour. How many pages will she read in 23 hours?

3 If a day has 24 hours, how many hours does a month have? (1 month = 31 days here)

4 The heart beats 72 times in a minute. How many times does it beat in 72 minutes?

5 Ruchi donates 25 apples once in a week to the orphanage. How many apples will
she donate in 4 months? (Assume 1 month = 4 weeks)

6 A bag of wheat weighs 24 kg. What is the total weight of 125 such bags?

7 The cost of a pen set is ` 234. Find the cost of 15 such sets.

8 There are 42 buses in a stand. Each bus has 52 seats in it. How many passengers can
travel in 42 buses?

9 A factory produces 325 milk cans in an hour. How many milk cans will it produce

in 21 hours?

10 The cost of a chair is ` 475. What is the cost of 12 such chairs?