Page 57 - Start Up Mathematics_4

EXERCISE 4.4

1. Solve the following estimation.
(a) 47,213 – 23,106 (round off to the nearest 100)

(b) 85,326 – 46,173 (round off to the nearest 100)
(c) 6,37,126 – 4,28,623 (round off to the nearest 1,000)

(d) 4,21,073 – 2,34,475 (round off to the nearest 1,000)
2. The population of town A was 5,46,300. After a few years, 2,75,150 people moved from
town A to town B. What is the population of town A now?

3. A wholesale dealer had 7,25,370 pens. He supplied 5,77,850 pens to shopkeepers. How
many pens is he left with?

4. The sum of two numbers is 2,05,618. If one number is 96,750, what is the other number?
5. Find the number which when added to 87,325 gives the sum as 1,25,734.

6. What number should be subtracted from 6,82,357 to get 4,96,576?
(Hint: Here the minuend and difference are given.)

7. What number is 36,851 less than 87,625?

(Hint: Here the subtrahend and minuend are given.)
8. Frame one word problem for each of the following. Then solve to find the answer.

(a) 23,915 – 12,640 = ? (b) 8,750 – 2,375 = ?
(c) 1,50,720 – 82,625 = ? (d) 17,345 – 12,598 = ?

9. Solve the following sums.
(a) 36,129 + 25,421 – 22,970 (b) 75,364 + 82,915 – 47,698 – 20,521
(c) 3,45,290 – 1,06,234 + 45,781 (d) 1,59,121 – 93,421 – 45,603

LET’S EVALUATE

1. Subtract the following numbers.

(a) TTh Th H T O (b) L TTh Th H T O

5 6 3 8 4 4 2 5 6 1 7

– 2 8 9 7 5 – 2 8 0 5 9 2

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