← Approximation and estimation lesson New set →

Approximation and Estimation Worksheet

Quantitative aptitude lesson 6: Approximation and estimation · Set 796 · 40 questions
TalentJR

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.

NameDateTime takenScore ___ / 40
  1. 1.Which is closest to 601 + 501 + 101? (a) 1300 (b) 1200 (c) 1400 (d) 1100
  2. 2.Which is closest to 807 ÷ 21? (a) 40 (b) 80 (c) 400 (d) 20
  3. 3.Which is closest to 902 × 72? (Round each number first.) (a) 126000 (b) 63000 (c) 6300 (d) 630000
  4. 4.Which is closest to 705 + 599 + 195? (a) 1400 (b) 1700 (c) 1500 (d) 1600
  5. 5.Round 83696 to the nearest ten.
  6. 6.Which is closest to 593 ÷ 31? (a) 10 (b) 40 (c) 20 (d) 200
  7. 7.Round 43273 to the nearest thousand.
  8. 8.Which is closest to 298 + 497 + 903? (a) 1600 (b) 1800 (c) 1900 (d) 1700
  9. 9.Round 34.61 to one decimal place. =
  10. 10.Which is closest to 100 + 196 + 595? (a) 800 (b) 1100 (c) 900 (d) 1000
  11. 11.Round 80.41 to one decimal place. =
  12. 12.Round 77559 to the nearest ten.
  13. 13.Round 69.21 to one decimal place. =
  14. 14.Which is closest to 596 + 701 + 300? (a) 1600 (b) 1800 (c) 1500 (d) 1700
  15. 15.Round 28.48 to one decimal place. =
  16. 16.Round 1709 to the nearest thousand.
  17. 17.Round 68.27 to one decimal place. =
  18. 18.Which is closest to 98 + 699 + 302? (a) 1100 (b) 1300 (c) 1000 (d) 1200
  19. 19.Round 95272 to the nearest hundred.
  20. 20.Round 83.66 to one decimal place. =
  21. 21.Round 3689 to the nearest ten.
  22. 22.Round 46.61 to one decimal place. =
  23. 23.Round 35070 to the nearest hundred.
  24. 24.Round 1580 to the nearest thousand.
  25. 25.Which is closest to 3594 ÷ 41? (a) 90 (b) 900 (c) 180 (d) 45
  26. 26.Which is closest to 302 × 32? (Round each number first.) (a) 9000 (b) 900 (c) 18000 (d) 90000
  27. 27.Which is closest to 1796 ÷ 21? (a) 180 (b) 90 (c) 45 (d) 900
  28. 28.Round 74.32 to one decimal place. =
  29. 29.Which is closest to 99 + 298 + 600? (a) 900 (b) 1100 (c) 1000 (d) 1200
  30. 30.Which is closest to 796 × 48? (Round each number first.) (a) 80000 (b) 4000 (c) 400000 (d) 40000
  31. 31.Round 38917 to the nearest ten.
  32. 32.Round 14083 to the nearest thousand.
  33. 33.Which is closest to 799 + 296 + 299? (a) 1600 (b) 1500 (c) 1300 (d) 1400
  34. 34.Round 91108 to the nearest thousand.
  35. 35.Which is closest to 1804 ÷ 21? (a) 90 (b) 45 (c) 900 (d) 180
  36. 36.Which is closest to 401 + 496 + 698? (a) 1700 (b) 1500 (c) 1600 (d) 1800
  37. 37.Which is closest to 3198 ÷ 41? (a) 800 (b) 160 (c) 40 (d) 80
  38. 38.Which is closest to 304 × 19? (Round each number first.) (a) 600 (b) 60000 (c) 12000 (d) 6000
  39. 39.Which is closest to 1198 ÷ 41? (a) 15 (b) 30 (c) 60 (d) 300
  40. 40.Round 71.94 to one decimal place. =

Answer key

  1. 1200
  2. 40
  3. 63000
  4. 1500
  5. 83700
  6. 20
  7. 43000
  8. 1700
  9. 34.6
  10. 900
  11. 80.4
  12. 77560
  13. 69.2
  14. 1600
  15. 28.5
  16. 2000
  17. 68.3
  18. 1100
  19. 95300
  20. 83.7
  21. 3690
  22. 46.6
  23. 35100
  24. 2000
  25. 90
  26. 9000
  27. 90
  28. 74.3
  29. 1000
  30. 40000
  31. 38920
  32. 14000
  33. 1400
  34. 91000
  35. 90
  36. 1600
  37. 80
  38. 6000
  39. 30
  40. 71.9

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