← Approximation and estimation lesson New set →

Approximation and Estimation Worksheet

Quantitative aptitude lesson 6: Approximation and estimation · Set 903 · 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.Round 13.14 to one decimal place. =
  2. 2.Which is closest to 1200 ÷ 29? (a) 400 (b) 80 (c) 20 (d) 40
  3. 3.Which is closest to 597 + 804 + 304? (a) 1900 (b) 1800 (c) 1600 (d) 1700
  4. 4.Which is closest to 304 + 95 + 296? (a) 900 (b) 600 (c) 700 (d) 800
  5. 5.Which is closest to 1204 ÷ 29? (a) 20 (b) 40 (c) 80 (d) 400
  6. 6.Round 14733 to the nearest ten.
  7. 7.Which is closest to 896 + 95 + 495? (a) 1400 (b) 1600 (c) 1500 (d) 1700
  8. 8.Which is closest to 698 × 52? (Round each number first.) (a) 350000 (b) 35000 (c) 70000 (d) 3500
  9. 9.Which is closest to 297 × 32? (Round each number first.) (a) 18000 (b) 900 (c) 9000 (d) 90000
  10. 10.Round 19.19 to one decimal place. =
  11. 11.Round 28992 to the nearest hundred.
  12. 12.Round 64321 to the nearest hundred.
  13. 13.Which is closest to 3507 ÷ 51? (a) 35 (b) 140 (c) 70 (d) 700
  14. 14.Round 80867 to the nearest thousand.
  15. 15.Round 33.81 to one decimal place. =
  16. 16.Which is closest to 804 × 58? (Round each number first.) (a) 96000 (b) 4800 (c) 48000 (d) 480000
  17. 17.Which is closest to 799 + 902 + 496? (a) 2300 (b) 2200 (c) 2100 (d) 2400
  18. 18.Which is closest to 607 ÷ 31? (a) 40 (b) 200 (c) 20 (d) 10
  19. 19.Round 12.41 to one decimal place. =
  20. 20.Round 10.17 to one decimal place. =
  21. 21.Round 72101 to the nearest ten.
  22. 22.Which is closest to 801 + 597 + 597? (a) 2200 (b) 1900 (c) 2100 (d) 2000
  23. 23.Which is closest to 798 × 80? (Round each number first.) (a) 64000 (b) 640000 (c) 6400 (d) 128000
  24. 24.Which is closest to 302 + 603 + 397? (a) 1400 (b) 1200 (c) 1300 (d) 1500
  25. 25.Round 20590 to the nearest hundred.
  26. 26.Which is closest to 104 + 105 + 395? (a) 800 (b) 700 (c) 600 (d) 500
  27. 27.Which is closest to 700 × 49? (Round each number first.) (a) 70000 (b) 3500 (c) 350000 (d) 35000
  28. 28.Round 93.74 to one decimal place. =
  29. 29.Which is closest to 202 × 32? (Round each number first.) (a) 600 (b) 60000 (c) 12000 (d) 6000
  30. 30.Which is closest to 304 × 38? (Round each number first.) (a) 24000 (b) 12000 (c) 120000 (d) 1200
  31. 31.Which is closest to 703 + 303 + 897? (a) 2100 (b) 1900 (c) 1800 (d) 2000
  32. 32.Which is closest to 704 × 78? (Round each number first.) (a) 112000 (b) 560000 (c) 5600 (d) 56000
  33. 33.Which is closest to 1992 ÷ 39? (a) 500 (b) 100 (c) 50 (d) 25
  34. 34.Which is closest to 896 × 28? (Round each number first.) (a) 2700 (b) 270000 (c) 27000 (d) 54000
  35. 35.Which is closest to 1791 ÷ 21? (a) 90 (b) 900 (c) 180 (d) 45
  36. 36.Which is closest to 201 + 199 + 597? (a) 1000 (b) 900 (c) 1200 (d) 1100
  37. 37.Round 41862 to the nearest ten.
  38. 38.Which is closest to 196 × 48? (Round each number first.) (a) 1000 (b) 20000 (c) 100000 (d) 10000
  39. 39.Which is closest to 1195 ÷ 19? (a) 600 (b) 120 (c) 30 (d) 60
  40. 40.Which is closest to 1205 ÷ 31? (a) 400 (b) 20 (c) 80 (d) 40

Answer key

  1. 13.1
  2. 40
  3. 1700
  4. 700
  5. 40
  6. 14730
  7. 1500
  8. 35000
  9. 9000
  10. 19.2
  11. 29000
  12. 64300
  13. 70
  14. 81000
  15. 33.8
  16. 48000
  17. 2200
  18. 20
  19. 12.4
  20. 10.2
  21. 72100
  22. 2000
  23. 64000
  24. 1300
  25. 20600
  26. 600
  27. 35000
  28. 93.7
  29. 6000
  30. 12000
  31. 1900
  32. 56000
  33. 50
  34. 27000
  35. 90
  36. 1000
  37. 41860
  38. 10000
  39. 60
  40. 40

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