Approximation and Estimation Worksheet

Quantitative aptitude lesson 6: Approximation and estimation · Set 723 · 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.Round 93.38 to one decimal place. =
2. 2.Round 16.91 to one decimal place. =
3. 3.Which is closest to 2803 ÷ 41? (a) 70 (b) 700 (c) 140 (d) 35
4. 4.Round 58.83 to one decimal place. =
5. 5.Which is closest to 902 + 99 + 500? (a) 1700 (b) 1600 (c) 1400 (d) 1500
6. 6.Which is closest to 296 × 38? (Round each number first.) (a) 24000 (b) 120000 (c) 12000 (d) 1200
7. 7.Round 40.31 to one decimal place. =
8. 8.Which is closest to 701 × 28? (Round each number first.) (a) 2100 (b) 210000 (c) 21000 (d) 42000
9. 9.Round 96.41 to one decimal place. =
10. 10.Round 33201 to the nearest ten.
11. 11.Round 12494 to the nearest hundred.
12. 12.Round 3866 to the nearest hundred.
13. 13.Round 37.86 to one decimal place. =
14. 14.Which is closest to 395 + 699 + 99? (a) 1200 (b) 1300 (c) 1400 (d) 1100
15. 15.Round 35.89 to one decimal place. =
16. 16.Which is closest to 301 × 42? (Round each number first.) (a) 1200 (b) 12000 (c) 24000 (d) 120000
17. 17.Round 99679 to the nearest ten.
18. 18.Which is closest to 1609 ÷ 21? (a) 80 (b) 160 (c) 800 (d) 40
19. 19.Which is closest to 503 × 92? (Round each number first.) (a) 4500 (b) 45000 (c) 450000 (d) 90000
20. 20.Round 4108 to the nearest ten.
21. 21.Which is closest to 403 × 40? (Round each number first.) (a) 160000 (b) 32000 (c) 1600 (d) 16000
22. 22.Which is closest to 304 × 29? (Round each number first.) (a) 90000 (b) 18000 (c) 900 (d) 9000
23. 23.Which is closest to 200 + 705 + 904? (a) 1800 (b) 1900 (c) 2000 (d) 1700
24. 24.Which is closest to 3994 ÷ 51? (a) 40 (b) 80 (c) 160 (d) 800
25. 25.Round 22.28 to one decimal place. =
26. 26.Which is closest to 696 × 79? (Round each number first.) (a) 560000 (b) 112000 (c) 56000 (d) 5600
27. 27.Round 72319 to the nearest hundred.
28. 28.Which is closest to 302 × 18? (Round each number first.) (a) 6000 (b) 12000 (c) 600 (d) 60000
29. 29.Which is closest to 598 × 18? (Round each number first.) (a) 12000 (b) 1200 (c) 24000 (d) 120000
30. 30.Which is closest to 705 + 103 + 403? (a) 1300 (b) 1100 (c) 1200 (d) 1400
31. 31.Which is closest to 703 × 60? (Round each number first.) (a) 420000 (b) 4200 (c) 42000 (d) 84000
32. 32.Round 84182 to the nearest ten.
33. 33.Which is closest to 200 × 58? (Round each number first.) (a) 120000 (b) 24000 (c) 12000 (d) 1200
34. 34.Round 65061 to the nearest thousand.
35. 35.Which is closest to 199 + 498 + 601? (a) 1300 (b) 1200 (c) 1400 (d) 1500
36. 36.Round 86.39 to one decimal place. =
37. 37.Which is closest to 2699 ÷ 31? (a) 90 (b) 180 (c) 900 (d) 45
38. 38.Round 42309 to the nearest hundred.
39. 39.Round 80.53 to one decimal place. =
40. 40.Round 43.13 to one decimal place. =

Free quantitative aptitude lessons, practice and worksheets at talentjr.in/quantitative-aptitude