Page 37 - ICSE Math 4

5. Es mate the following sums by rounding off the addends as men oned.

(a) 2,876 + 4,905 +39,056 (to the nearest 100)

(b) 1,111 + 4,590 + 2,744 (to the nearest 1,000)

6. Es mate the sum by rounding off to the nearest 1,000. Verify the result by fi nding

the actual sum.

(a) The cost of three jackets in a store is ` 3,465; ` 5,642 and ` 6,752. Es mate the
total cost of three jackets.

(b) The popula on of village A is 3,628 and village B is 8,426. Es mate the total
popula on of the two villages.

(c) Rohan’s pocket money is ` 2,350 per month and his sister's pocket money is
` 2,500 per month. Es mate their total pocket money.

7. Solve the following word problems.

(a) During a Tree Plan ng Programme in a city, 3,258 trees were planted in one
month; 4,527 trees were planted in the next month. How many trees were
planted in the two months?

(b) For a family func on, Mr Malik spent ` 5,600 on food; ` 5,750 on arrangements
and decora on, and ` 6,275 on gi s. How much did Mr Malik spend for the
func on?

(c) Mr Bha a had ` 3,495 in his account. He deposited ` 5,600 on Monday and

` 6,475 on Friday in his account. How much money is there in his account now?

(d) If the number 4,666 is increased by 4,225, what will be the new number?

(e) There are 1,054 books of science, 1,202 books of mathema cs and 800 books
of other subjects in a school library. What is the total number of books in the
library?

8. Frame two word problems for the following sums. Then, solve to fi nd the answer.

(a) 7,260 + 8,450 (b) 3,000 + 4,320

Values and Life Skills

There are 1,200 students in school A, 1,400 students in school B and 1,286 students in
school C. How many students are there in total in all three school? Do you go school
regularly? Do you obey your teachers?

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