Approximation and Estimation Worksheet

Quantitative aptitude lesson 6: Approximation and estimation · Set 526 · 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 16.41 to one decimal place. =
2. 2.Which is closest to 1191 ÷ 41? (a) 300 (b) 30 (c) 15 (d) 60
3. 3.Round 65754 to the nearest hundred.
4. 4.Which is closest to 896 × 32? (Round each number first.) (a) 270000 (b) 27000 (c) 54000 (d) 2700
5. 5.Round 59.36 to one decimal place. =
6. 6.Round 59169 to the nearest ten.
7. 7.Which is closest to 603 ÷ 19? (a) 30 (b) 60 (c) 300 (d) 15
8. 8.Round 18.43 to one decimal place. =
9. 9.Round 89458 to the nearest hundred.
10. 10.Which is closest to 396 × 91? (Round each number first.) (a) 3600 (b) 36000 (c) 360000 (d) 72000
11. 11.Round 32.29 to one decimal place. =
12. 12.Which is closest to 503 × 48? (Round each number first.) (a) 2500 (b) 25000 (c) 250000 (d) 50000
13. 13.Round 90.14 to one decimal place. =
14. 14.Round 37286 to the nearest ten.
15. 15.Which is closest to 201 × 40? (Round each number first.) (a) 16000 (b) 8000 (c) 80000 (d) 800
16. 16.Which is closest to 203 × 79? (Round each number first.) (a) 32000 (b) 1600 (c) 16000 (d) 160000
17. 17.Round 67760 to the nearest thousand.
18. 18.Which is closest to 804 × 78? (Round each number first.) (a) 128000 (b) 64000 (c) 640000 (d) 6400
19. 19.Round 77556 to the nearest thousand.
20. 20.Which is closest to 701 × 51? (Round each number first.) (a) 35000 (b) 70000 (c) 350000 (d) 3500
21. 21.Which is closest to 899 × 22? (Round each number first.) (a) 1800 (b) 180000 (c) 36000 (d) 18000
22. 22.Which is closest to 205 + 702 + 805? (a) 1900 (b) 1700 (c) 1600 (d) 1800
23. 23.Which is closest to 595 + 696 + 698? (a) 2000 (b) 2200 (c) 1900 (d) 2100
24. 24.Which is closest to 203 + 599 + 404? (a) 1300 (b) 1200 (c) 1400 (d) 1100
25. 25.Which is closest to 600 + 196 + 796? (a) 1600 (b) 1800 (c) 1700 (d) 1500
26. 26.Which is closest to 297 × 30? (Round each number first.) (a) 900 (b) 18000 (c) 90000 (d) 9000
27. 27.Which is closest to 799 × 81? (Round each number first.) (a) 6400 (b) 128000 (c) 64000 (d) 640000
28. 28.Round 32221 to the nearest hundred.
29. 29.Which is closest to 296 × 31? (Round each number first.) (a) 18000 (b) 900 (c) 9000 (d) 90000
30. 30.Round 34021 to the nearest ten.
31. 31.Which is closest to 398 × 29? (Round each number first.) (a) 12000 (b) 1200 (c) 120000 (d) 24000
32. 32.Which is closest to 2692 ÷ 29? (a) 900 (b) 45 (c) 180 (d) 90
33. 33.Which is closest to 1991 ÷ 49? (a) 40 (b) 20 (c) 80 (d) 400
34. 34.Round 70.41 to one decimal place. =
35. 35.Round 99507 to the nearest ten.
36. 36.Which is closest to 2999 ÷ 49? (a) 600 (b) 60 (c) 30 (d) 120
37. 37.Which is closest to 402 × 91? (Round each number first.) (a) 36000 (b) 3600 (c) 360000 (d) 72000
38. 38.Which is closest to 697 + 503 + 298? (a) 1700 (b) 1600 (c) 1400 (d) 1500
39. 39.Which is closest to 797 + 104 + 97? (a) 900 (b) 1100 (c) 1200 (d) 1000
40. 40.Round 54.36 to one decimal place. =

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