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Worksheet on Estimating Sums and Differences
In 4th grade worksheet on estimating sums and differences, all grade students can practice the questions on estimations. This exercise sheet on estimating sums and differences can be practiced by the students to get more ideas to find the estimated sum and difference to its nearest ten, hundred and thousand.
1. Estimate the difference. One has been done for you.
(ii) 29 - 12 = _____
(iii) 36 - 16 = _____
(iv) 49 - 24 = _____
(v) 72 - 57 = _____
(vi) 86 - 18 = _____
2. Find the estimated difference (nearest 10).
(i) 74 - 8
(ii) 65 - 12
(iii) 36 - 28
(iv) 92 - 57
Answer:
2. (i) 60
(ii) 60
(iii) 10
(iv) 30
3. Find the estimated sum (nearest 100).
(i) 421 + 560
(ii) 165 + 102
(iii) 367 + 550
(iv) 209 + 627
Answer:
3. (i) 1000
(ii) 300
(iii) 10000
(iv) 800
4. Find the estimated sum to the nearest ten and also find the actual sum:
(i) 1 6 7 + 2 5 9 = ______ .
(ii) 3 6 4 + 5 8 9 = ______ .
(iii) 7 6 9 + 5 5 6 = ______ .
(iv) 2 5 0 + 3 7 3 = ______ .
(v) 4 6 3 + 2 7 9 = ______ .
(vi) 8 5 0 + 4 9 9 = ______ .
5. Estimate each sum to the nearest hundred and also the actual sum:
(i) 9 7 5 + 7 7 8 = ______ .
(ii) 4 1 7 0 + 2 3 9 7 = ______ .
(iii) 7 3 0 0 + 5 3 1 5 = ______ .
(v) 5 6 8 5 + 3 4 7 4 = ______ .
(v) 2 3 9 7 + 5 6 6 8 = ______ .
(vi) 3 7 1 3 + 5 1 3 5 = ______ .
6. Find the estimated sum to the nearest thousand and also the actual sum:
(i) 3 1 8 0 6 + 4 7 8 0 8 + 2 2 3 9 7 = ______ .
(ii) 4 3 1 4 1 + 4 1 3 1 7 + 3 5 7 0 9 = ______ .
(iii) 5 0 0 9 3 + 2 9 9 7 9 + 3 1 1 8 4 = ______ .
7. Find the estimated difference to the nearest ten and also the actual difference:
(i) 5 8 - 4 7 = ______ .
(ii) 1 9 1 - 1 6 8 = ______ .
(iii) 8 6 7 - 2 4 9 = ______ .
(iv) 5 3 9 - 3 2 4 = ______ .
(v) 7 4 7 - 3 6 8 = ______ .
(vi) 9 8 6 - 7 7 8 = ______ .
8. Estimate the difference to the nearest hundred and also the actual difference:
(i) 3 9 1 6 - 1 4 5 8 = ______ .
(ii) 4 6 1 5 - 2 2 8 6 = ______ .
(iii) 9 4 3 8 - 4 1 5 9 = ______ .
(iv) 5 8 6 1 - 2 9 4 4 = ______ .
(v) 8 3 5 1 - 2 9 7 4 = ______ .
(vi) 4 7 6 2 - 2 0 8 5 = ______ .
9. Estimate each difference to the nearest thousand and also find the actual difference:
(i) 6 7 5 1 9 - 4 1 3 8 9 = ______ .
(ii) 7 1 6 0 2 7 - 5 4 9 5 6 8 = ______ .
(iii) 4 5 6 5 0 7 - 2 4 7 5 6 9 = ______ .
10. Estimate the answer by rounding off the numbers. Solve to check your answer:
Answer:
10.
11. Estimate the following sums:
(i) 735 + 498
(ii) 27,980 + 14,200
(iii) 2,956 + 1,209
(iv) 1,960 + 489
(v) 1,552 + 1,805
(vi) 1,447 + 2,549
Answer:
11. (i) 1200
(ii) 42,000
(iii) 4,000
(iv) 2,500
(v) 4,000
(vi) 4,000
12. Estimate each of the following differences:
(i) 1,269 - 753
(ii) 2,999 - 224
(iii) 8,453 – 4,965
(iv) 1,245 - 378
(v) 7,765 - 864
(vi) 26,338 – 5,432
Answer:
12. (i) 500
(ii) 2,800
(iii) 3,000
(iv) 800
(v) 6,900
(vi) 21,000
13. Nitheeya had 168 marbles. She gave 37 marbles to her sister. How many marbles are left with Nitheeya? Estimate your answer to the nearest ten.
Answer:
13. 130 marbles
14. Nitheeya goes for shopping. She buys an umbrella for ₹ 385 and geometry box for ₹ 298. Ho much does she spend in all? Estimate your answer to the nearest hundred.
Answer:
14. ₹ 700
15. Population of Bandhab Nagar was 87,745 in the year 2005. In the year 2010 it was found to be increased by 12,359. What was the population of the city in 2010? Give your answer by estimating.
Answer:
15. 1,00,000
16. A science exhibition was held for five days in exhibition hall. The numbers of tickets sold at the exhibition hall counter on the 1st, 2nd, 3rd, 4th and 5th day were 2,078; 1,984; 2,076; 2,457 and 2,653 respectively. Estimate your answer to the nearest thousand.
Answer:
16. 11,000
If students have any queries regarding the questions in the worksheet on estimating sums and differences please fill-up the below comment box so that we can help you.
However, suggestions for further improvement, from all quarters would be greatly appreciated.
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