← Approximation and estimation lesson New set →

Approximation and Estimation Worksheet

Quantitative aptitude lesson 6: Approximation and estimation · Set 888 · 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 62718 to the nearest ten.
  2. 2.Round 46.28 to one decimal place. =
  3. 3.Which is closest to 701 × 20? (Round each number first.) (a) 140000 (b) 28000 (c) 1400 (d) 14000
  4. 4.Round 34388 to the nearest ten.
  5. 5.Which is closest to 201 × 38? (Round each number first.) (a) 800 (b) 16000 (c) 80000 (d) 8000
  6. 6.Round 47341 to the nearest hundred.
  7. 7.Round 59.79 to one decimal place. =
  8. 8.Round 7165 to the nearest thousand.
  9. 9.Which is closest to 2093 ÷ 29? (a) 35 (b) 140 (c) 700 (d) 70
  10. 10.Which is closest to 698 × 30? (Round each number first.) (a) 2100 (b) 210000 (c) 42000 (d) 21000
  11. 11.Which is closest to 499 × 48? (Round each number first.) (a) 50000 (b) 2500 (c) 25000 (d) 250000
  12. 12.Round 37902 to the nearest thousand.
  13. 13.Which is closest to 1200 ÷ 21? (a) 600 (b) 120 (c) 30 (d) 60
  14. 14.Which is closest to 2703 ÷ 31? (a) 90 (b) 900 (c) 180 (d) 45
  15. 15.Which is closest to 197 × 79? (Round each number first.) (a) 32000 (b) 160000 (c) 1600 (d) 16000
  16. 16.Which is closest to 402 + 805 + 597? (a) 1700 (b) 2000 (c) 1900 (d) 1800
  17. 17.Round 61428 to the nearest hundred.
  18. 18.Which is closest to 3592 ÷ 39? (a) 45 (b) 900 (c) 180 (d) 90
  19. 19.Round 93966 to the nearest hundred.
  20. 20.Round 50.76 to one decimal place. =
  21. 21.Which is closest to 2492 ÷ 51? (a) 25 (b) 50 (c) 100 (d) 500
  22. 22.Which is closest to 896 × 28? (Round each number first.) (a) 27000 (b) 54000 (c) 2700 (d) 270000
  23. 23.Which is closest to 897 ÷ 31? (a) 30 (b) 300 (c) 60 (d) 15
  24. 24.Which is closest to 804 + 302 + 895? (a) 1900 (b) 2100 (c) 2000 (d) 2200
  25. 25.Which is closest to 3992 ÷ 49? (a) 40 (b) 160 (c) 80 (d) 800
  26. 26.Which is closest to 402 × 22? (Round each number first.) (a) 80000 (b) 16000 (c) 8000 (d) 800
  27. 27.Which is closest to 496 × 81? (Round each number first.) (a) 80000 (b) 40000 (c) 4000 (d) 400000
  28. 28.Which is closest to 697 × 19? (Round each number first.) (a) 1400 (b) 28000 (c) 14000 (d) 140000
  29. 29.Which is closest to 303 × 41? (Round each number first.) (a) 120000 (b) 1200 (c) 24000 (d) 12000
  30. 30.Round 56.18 to one decimal place. =
  31. 31.Which is closest to 697 × 41? (Round each number first.) (a) 280000 (b) 28000 (c) 2800 (d) 56000
  32. 32.Round 30499 to the nearest thousand.
  33. 33.Round 13.72 to one decimal place. =
  34. 34.Which is closest to 996 ÷ 49? (a) 10 (b) 200 (c) 20 (d) 40
  35. 35.Which is closest to 95 + 598 + 797? (a) 1400 (b) 1500 (c) 1600 (d) 1700
  36. 36.Which is closest to 900 × 28? (Round each number first.) (a) 270000 (b) 54000 (c) 27000 (d) 2700
  37. 37.Which is closest to 198 × 42? (Round each number first.) (a) 80000 (b) 800 (c) 16000 (d) 8000
  38. 38.Which is closest to 797 + 502 + 396? (a) 1900 (b) 1800 (c) 1600 (d) 1700
  39. 39.Round 98.36 to one decimal place. =
  40. 40.Round 39580 to the nearest hundred.

Answer key

  1. 62720
  2. 46.3
  3. 14000
  4. 34390
  5. 8000
  6. 47300
  7. 59.8
  8. 7000
  9. 70
  10. 21000
  11. 25000
  12. 38000
  13. 60
  14. 90
  15. 16000
  16. 1800
  17. 61400
  18. 90
  19. 94000
  20. 50.8
  21. 50
  22. 27000
  23. 30
  24. 2000
  25. 80
  26. 8000
  27. 40000
  28. 14000
  29. 12000
  30. 56.2
  31. 28000
  32. 30000
  33. 13.7
  34. 20
  35. 1500
  36. 27000
  37. 8000
  38. 1700
  39. 98.4
  40. 39600

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