Approximation and Estimation Worksheet

Quantitative aptitude lesson 6: Approximation and estimation · Set 963 · 40 questions

The method (Round, then calculate): Round each number to the nearest ten, hundred or whole number. Do the easy sum with the rounded numbers. Pick the option nearest to it. To round a number, look at the digit after the place you keep: 5 or more goes up, less than 5 stays.

1. 1.Which is closest to 807 ÷ 19? (a) 80 (b) 20 (c) 40 (d) 400
2. 2.Which is closest to 2009 ÷ 39? (a) 25 (b) 500 (c) 100 (d) 50
3. 3.Round 88.08 to one decimal place. =
4. 4.Which is closest to 897 + 400 + 98? (a) 1600 (b) 1400 (c) 1300 (d) 1500
5. 5.Which is closest to 895 + 198 + 897? (a) 2200 (b) 2100 (c) 1900 (d) 2000
6. 6.Which is closest to 501 + 102 + 595? (a) 1200 (b) 1300 (c) 1400 (d) 1100
7. 7.Which is closest to 896 × 62? (Round each number first.) (a) 540000 (b) 108000 (c) 54000 (d) 5400
8. 8.Which is closest to 800 × 59? (Round each number first.) (a) 48000 (b) 96000 (c) 4800 (d) 480000
9. 9.Round 64656 to the nearest hundred.
10. 10.Round 32.76 to one decimal place. =
11. 11.Which is closest to 2507 ÷ 49? (a) 500 (b) 50 (c) 25 (d) 100
12. 12.Which is closest to 3596 ÷ 39? (a) 180 (b) 45 (c) 90 (d) 900
13. 13.Which is closest to 699 + 99 + 201? (a) 1200 (b) 900 (c) 1100 (d) 1000
14. 14.Which is closest to 3595 ÷ 41? (a) 900 (b) 45 (c) 180 (d) 90
15. 15.Which is closest to 304 × 22? (Round each number first.) (a) 12000 (b) 60000 (c) 600 (d) 6000
16. 16.Which is closest to 900 × 42? (Round each number first.) (a) 36000 (b) 3600 (c) 72000 (d) 360000
17. 17.Round 69.79 to one decimal place. =
18. 18.Which is closest to 95 + 405 + 296? (a) 800 (b) 1000 (c) 700 (d) 900
19. 19.Which is closest to 3008 ÷ 49? (a) 30 (b) 600 (c) 120 (d) 60
20. 20.Which is closest to 704 + 598 + 96? (a) 1300 (b) 1500 (c) 1400 (d) 1600
21. 21.Round 19.11 to one decimal place. =
22. 22.Round 58779 to the nearest ten.
23. 23.Which is closest to 698 × 32? (Round each number first.) (a) 2100 (b) 42000 (c) 210000 (d) 21000
24. 24.Which is closest to 298 × 18? (Round each number first.) (a) 60000 (b) 600 (c) 6000 (d) 12000
25. 25.Which is closest to 497 + 596 + 99? (a) 1100 (b) 1400 (c) 1200 (d) 1300
26. 26.Which is closest to 601 ÷ 19? (a) 60 (b) 300 (c) 15 (d) 30
27. 27.Which is closest to 605 + 200 + 696? (a) 1600 (b) 1400 (c) 1500 (d) 1700
28. 28.Which is closest to 499 + 597 + 599? (a) 1600 (b) 1900 (c) 1800 (d) 1700
29. 29.Which is closest to 902 × 28? (Round each number first.) (a) 270000 (b) 2700 (c) 27000 (d) 54000
30. 30.Round 89805 to the nearest hundred.
31. 31.Which is closest to 196 × 41? (Round each number first.) (a) 16000 (b) 800 (c) 80000 (d) 8000
32. 32.Which is closest to 503 × 18? (Round each number first.) (a) 1000 (b) 10000 (c) 20000 (d) 100000
33. 33.Which is closest to 3502 ÷ 51? (a) 140 (b) 700 (c) 35 (d) 70
34. 34.Which is closest to 796 + 302 + 900? (a) 1900 (b) 2100 (c) 2000 (d) 2200
35. 35.Which is closest to 696 × 51? (Round each number first.) (a) 350000 (b) 35000 (c) 70000 (d) 3500
36. 36.Which is closest to 397 × 19? (Round each number first.) (a) 80000 (b) 800 (c) 16000 (d) 8000
37. 37.Which is closest to 802 × 29? (Round each number first.) (a) 48000 (b) 24000 (c) 240000 (d) 2400
38. 38.Round 63.72 to one decimal place. =
39. 39.Which is closest to 594 ÷ 19? (a) 30 (b) 15 (c) 60 (d) 300
40. 40.Which is closest to 603 × 48? (Round each number first.) (a) 30000 (b) 300000 (c) 60000 (d) 3000

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