Approximation and Estimation Worksheet

Quantitative aptitude lesson 6: Approximation and estimation · Set 148 · 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 49.58 to one decimal place. =
2. 2.Round 24366 to the nearest hundred.
3. 3.Which is closest to 896 × 31? (Round each number first.) (a) 270000 (b) 54000 (c) 27000 (d) 2700
4. 4.Which is closest to 2397 ÷ 39? (a) 30 (b) 60 (c) 600 (d) 120
5. 5.Round 31.21 to one decimal place. =
6. 6.Round 6107 to the nearest hundred.
7. 7.Which is closest to 400 + 797 + 97? (a) 1300 (b) 1200 (c) 1400 (d) 1500
8. 8.Which is closest to 301 × 58? (Round each number first.) (a) 180000 (b) 1800 (c) 18000 (d) 36000
9. 9.Which is closest to 898 + 498 + 695? (a) 2200 (b) 2000 (c) 2100 (d) 2300
10. 10.Which is closest to 2002 ÷ 51? (a) 20 (b) 400 (c) 80 (d) 40
11. 11.Round 40688 to the nearest ten.
12. 12.Which is closest to 3199 ÷ 41? (a) 40 (b) 800 (c) 80 (d) 160
13. 13.Which is closest to 95 + 297 + 305? (a) 800 (b) 600 (c) 900 (d) 700
14. 14.Round 53.86 to one decimal place. =
15. 15.Which is closest to 604 × 20? (Round each number first.) (a) 1200 (b) 120000 (c) 24000 (d) 12000
16. 16.Round 22342 to the nearest hundred.
17. 17.Which is closest to 799 × 32? (Round each number first.) (a) 240000 (b) 2400 (c) 48000 (d) 24000
18. 18.Round 76169 to the nearest thousand.
19. 19.Round 84.81 to one decimal place. =
20. 20.Which is closest to 697 × 22? (Round each number first.) (a) 1400 (b) 140000 (c) 28000 (d) 14000
21. 21.Which is closest to 596 + 802 + 300? (a) 1900 (b) 1700 (c) 1600 (d) 1800
22. 22.Round 66.16 to one decimal place. =
23. 23.Which is closest to 3505 ÷ 49? (a) 140 (b) 700 (c) 35 (d) 70
24. 24.Which is closest to 702 × 90? (Round each number first.) (a) 630000 (b) 63000 (c) 126000 (d) 6300
25. 25.Round 65.83 to one decimal place. =
26. 26.Round 3956 to the nearest ten.
27. 27.Which is closest to 4000 ÷ 49? (a) 40 (b) 160 (c) 80 (d) 800
28. 28.Round 55086 to the nearest ten.
29. 29.Which is closest to 99 + 95 + 397? (a) 600 (b) 500 (c) 700 (d) 800
30. 30.Round 44290 to the nearest hundred.
31. 31.Round 36244 to the nearest hundred.
32. 32.Round 56.88 to one decimal place. =
33. 33.Which is closest to 398 × 89? (Round each number first.) (a) 36000 (b) 360000 (c) 3600 (d) 72000
34. 34.Which is closest to 1195 ÷ 39? (a) 60 (b) 15 (c) 300 (d) 30
35. 35.Round 63219 to the nearest thousand.
36. 36.Which is closest to 299 × 60? (Round each number first.) (a) 18000 (b) 36000 (c) 180000 (d) 1800
37. 37.Which is closest to 597 × 32? (Round each number first.) (a) 180000 (b) 18000 (c) 36000 (d) 1800
38. 38.Round 31131 to the nearest thousand.
39. 39.Which is closest to 702 × 29? (Round each number first.) (a) 210000 (b) 2100 (c) 42000 (d) 21000
40. 40.Round 94.44 to one decimal place. =

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