Approximation and Estimation Worksheet

Quantitative aptitude lesson 6: Approximation and estimation · Set 214 · 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 698 + 796 + 496? (a) 2000 (b) 1900 (c) 2200 (d) 2100
2. 2.Which is closest to 3591 ÷ 41? (a) 45 (b) 180 (c) 900 (d) 90
3. 3.Which is closest to 1207 ÷ 21? (a) 120 (b) 600 (c) 60 (d) 30
4. 4.Round 69145 to the nearest hundred.
5. 5.Round 5266 to the nearest ten.
6. 6.Which is closest to 303 + 196 + 398? (a) 800 (b) 900 (c) 1000 (d) 1100
7. 7.Which is closest to 503 × 59? (Round each number first.) (a) 30000 (b) 300000 (c) 3000 (d) 60000
8. 8.Round 64118 to the nearest ten.
9. 9.Which is closest to 602 × 42? (Round each number first.) (a) 2400 (b) 48000 (c) 240000 (d) 24000
10. 10.Which is closest to 697 × 28? (Round each number first.) (a) 210000 (b) 2100 (c) 42000 (d) 21000
11. 11.Which is closest to 395 + 802 + 500? (a) 1800 (b) 1600 (c) 1700 (d) 1900
12. 12.Round 27.09 to one decimal place. =
13. 13.Which is closest to 901 × 79? (Round each number first.) (a) 144000 (b) 720000 (c) 7200 (d) 72000
14. 14.Which is closest to 598 × 62? (Round each number first.) (a) 360000 (b) 72000 (c) 3600 (d) 36000
15. 15.Round 12248 to the nearest thousand.
16. 16.Round 95863 to the nearest hundred.
17. 17.Which is closest to 803 × 61? (Round each number first.) (a) 4800 (b) 480000 (c) 96000 (d) 48000
18. 18.Round 35001 to the nearest thousand.
19. 19.Which is closest to 403 × 72? (Round each number first.) (a) 2800 (b) 280000 (c) 28000 (d) 56000
20. 20.Which is closest to 1601 ÷ 39? (a) 20 (b) 40 (c) 400 (d) 80
21. 21.Which is closest to 2393 ÷ 41? (a) 120 (b) 30 (c) 60 (d) 600
22. 22.Which is closest to 703 + 500 + 101? (a) 1400 (b) 1300 (c) 1500 (d) 1200
23. 23.Round 60143 to the nearest ten.
24. 24.Round 40.67 to one decimal place. =
25. 25.Round 83142 to the nearest hundred.
26. 26.Round 43941 to the nearest ten.
27. 27.Which is closest to 2708 ÷ 29? (a) 900 (b) 180 (c) 90 (d) 45
28. 28.Round 7055 to the nearest thousand.
29. 29.Which is closest to 296 × 42? (Round each number first.) (a) 12000 (b) 1200 (c) 120000 (d) 24000
30. 30.Which is closest to 596 × 41? (Round each number first.) (a) 2400 (b) 24000 (c) 240000 (d) 48000
31. 31.Round 91.08 to one decimal place. =
32. 32.Round 50.57 to one decimal place. =
33. 33.Round 87.53 to one decimal place. =
34. 34.Which is closest to 200 × 91? (Round each number first.) (a) 36000 (b) 1800 (c) 180000 (d) 18000
35. 35.Which is closest to 804 + 804 + 196? (a) 1800 (b) 1900 (c) 2000 (d) 1700
36. 36.Which is closest to 592 ÷ 21? (a) 15 (b) 30 (c) 300 (d) 60
37. 37.Round 53464 to the nearest ten.
38. 38.Round 91429 to the nearest thousand.
39. 39.Round 46.86 to one decimal place. =
40. 40.Round 12.61 to one decimal place. =

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