Approximation and Estimation Worksheet

Quantitative aptitude lesson 6: Approximation and estimation · Set 868 · 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 795 + 699 + 601? (a) 2300 (b) 2200 (c) 2100 (d) 2000
2. 2.Round 67609 to the nearest ten.
3. 3.Round 55.17 to one decimal place. =
4. 4.Which is closest to 1003 ÷ 21? (a) 50 (b) 25 (c) 100 (d) 500
5. 5.Which is closest to 298 + 300 + 304? (a) 900 (b) 1000 (c) 1100 (d) 800
6. 6.Which is closest to 600 × 72? (Round each number first.) (a) 84000 (b) 42000 (c) 4200 (d) 420000
7. 7.Round 34.37 to one decimal place. =
8. 8.Which is closest to 704 × 62? (Round each number first.) (a) 42000 (b) 84000 (c) 4200 (d) 420000
9. 9.Which is closest to 197 × 59? (Round each number first.) (a) 120000 (b) 1200 (c) 24000 (d) 12000
10. 10.Which is closest to 197 × 21? (Round each number first.) (a) 8000 (b) 40000 (c) 400 (d) 4000
11. 11.Round 49.19 to one decimal place. =
12. 12.Which is closest to 1491 ÷ 51? (a) 30 (b) 60 (c) 15 (d) 300
13. 13.Round 77253 to the nearest thousand.
14. 14.Which is closest to 704 × 51? (Round each number first.) (a) 35000 (b) 70000 (c) 3500 (d) 350000
15. 15.Which is closest to 799 × 68? (Round each number first.) (a) 56000 (b) 5600 (c) 112000 (d) 560000
16. 16.Which is closest to 496 × 91? (Round each number first.) (a) 4500 (b) 450000 (c) 90000 (d) 45000
17. 17.Round 94566 to the nearest ten.
18. 18.Round 75.77 to one decimal place. =
19. 19.Which is closest to 405 + 304 + 203? (a) 900 (b) 1100 (c) 1000 (d) 800
20. 20.Which is closest to 196 × 32? (Round each number first.) (a) 60000 (b) 12000 (c) 600 (d) 6000
21. 21.Which is closest to 299 × 78? (Round each number first.) (a) 2400 (b) 240000 (c) 48000 (d) 24000
22. 22.Round 15.86 to one decimal place. =
23. 23.Which is closest to 401 + 200 + 296? (a) 1000 (b) 1100 (c) 800 (d) 900
24. 24.Which is closest to 904 × 60? (Round each number first.) (a) 540000 (b) 108000 (c) 5400 (d) 54000
25. 25.Which is closest to 897 + 500 + 101? (a) 1600 (b) 1400 (c) 1500 (d) 1700
26. 26.Which is closest to 899 × 39? (Round each number first.) (a) 3600 (b) 72000 (c) 36000 (d) 360000
27. 27.Which is closest to 105 + 196 + 398? (a) 600 (b) 800 (c) 900 (d) 700
28. 28.Round 90.69 to one decimal place. =
29. 29.Which is closest to 700 × 82? (Round each number first.) (a) 112000 (b) 56000 (c) 5600 (d) 560000
30. 30.Which is closest to 803 + 599 + 701? (a) 2000 (b) 2300 (c) 2200 (d) 2100
31. 31.Which is closest to 998 ÷ 21? (a) 100 (b) 50 (c) 25 (d) 500
32. 32.Which is closest to 701 × 70? (Round each number first.) (a) 490000 (b) 49000 (c) 4900 (d) 98000
33. 33.Which is closest to 702 × 88? (Round each number first.) (a) 630000 (b) 126000 (c) 63000 (d) 6300
34. 34.Round 45.47 to one decimal place. =
35. 35.Round 58.33 to one decimal place. =
36. 36.Which is closest to 698 × 40? (Round each number first.) (a) 280000 (b) 28000 (c) 56000 (d) 2800
37. 37.Round 47905 to the nearest hundred.
38. 38.Which is closest to 603 + 402 + 596? (a) 1500 (b) 1600 (c) 1800 (d) 1700
39. 39.Which is closest to 97 + 900 + 400? (a) 1300 (b) 1500 (c) 1600 (d) 1400
40. 40.Round 88522 to the nearest thousand.

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