← Approximation and estimation lesson New set →

Approximation and Estimation Worksheet

Quantitative aptitude lesson 6: Approximation and estimation · Set 70 · 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 8020 to the nearest thousand.
  2. 2.Round 11.57 to one decimal place. =
  3. 3.Which is closest to 902 + 200 + 704? (a) 1900 (b) 1700 (c) 1800 (d) 2000
  4. 4.Round 73404 to the nearest ten.
  5. 5.Which is closest to 1595 ÷ 21? (a) 160 (b) 80 (c) 800 (d) 40
  6. 6.Which is closest to 495 + 901 + 198? (a) 1700 (b) 1600 (c) 1500 (d) 1800
  7. 7.Round 98985 to the nearest thousand.
  8. 8.Round 90934 to the nearest ten.
  9. 9.Which is closest to 900 × 39? (Round each number first.) (a) 360000 (b) 36000 (c) 3600 (d) 72000
  10. 10.Round 47.86 to one decimal place. =
  11. 11.Round 96.63 to one decimal place. =
  12. 12.Which is closest to 1609 ÷ 41? (a) 80 (b) 40 (c) 400 (d) 20
  13. 13.Round 41.17 to one decimal place. =
  14. 14.Which is closest to 904 × 29? (Round each number first.) (a) 27000 (b) 54000 (c) 270000 (d) 2700
  15. 15.Which is closest to 201 × 32? (Round each number first.) (a) 12000 (b) 6000 (c) 60000 (d) 600
  16. 16.Which is closest to 1208 ÷ 19? (a) 30 (b) 60 (c) 600 (d) 120
  17. 17.Which is closest to 898 + 697 + 96? (a) 1800 (b) 1900 (c) 1600 (d) 1700
  18. 18.Round 18270 to the nearest hundred.
  19. 19.Round 1796 to the nearest hundred.
  20. 20.Round 83141 to the nearest thousand.
  21. 21.Round 44.78 to one decimal place. =
  22. 22.Which is closest to 704 × 58? (Round each number first.) (a) 84000 (b) 420000 (c) 4200 (d) 42000
  23. 23.Which is closest to 893 ÷ 29? (a) 30 (b) 60 (c) 15 (d) 300
  24. 24.Which is closest to 799 × 29? (Round each number first.) (a) 24000 (b) 48000 (c) 2400 (d) 240000
  25. 25.Round 99.51 to one decimal place. =
  26. 26.Which is closest to 300 + 697 + 104? (a) 1200 (b) 1000 (c) 1300 (d) 1100
  27. 27.Which is closest to 697 × 31? (Round each number first.) (a) 42000 (b) 21000 (c) 210000 (d) 2100
  28. 28.Round 99942 to the nearest thousand.
  29. 29.Round 11.84 to one decimal place. =
  30. 30.Which is closest to 899 + 497 + 100? (a) 1500 (b) 1400 (c) 1600 (d) 1700
  31. 31.Round 86.48 to one decimal place. =
  32. 32.Round 32.18 to one decimal place. =
  33. 33.Which is closest to 904 × 31? (Round each number first.) (a) 27000 (b) 2700 (c) 270000 (d) 54000
  34. 34.Which is closest to 2393 ÷ 29? (a) 80 (b) 40 (c) 800 (d) 160
  35. 35.Round 85033 to the nearest hundred.
  36. 36.Which is closest to 607 ÷ 19? (a) 300 (b) 30 (c) 15 (d) 60
  37. 37.Which is closest to 199 + 701 + 901? (a) 1800 (b) 2000 (c) 1700 (d) 1900
  38. 38.Round 15.39 to one decimal place. =
  39. 39.Which is closest to 3192 ÷ 41? (a) 80 (b) 800 (c) 40 (d) 160
  40. 40.Round 56.58 to one decimal place. =

Answer key

  1. 8000
  2. 11.6
  3. 1800
  4. 73400
  5. 80
  6. 1600
  7. 99000
  8. 90930
  9. 36000
  10. 47.9
  11. 96.6
  12. 40
  13. 41.2
  14. 27000
  15. 6000
  16. 60
  17. 1700
  18. 18300
  19. 1800
  20. 83000
  21. 44.8
  22. 42000
  23. 30
  24. 24000
  25. 99.5
  26. 1100
  27. 21000
  28. 100000
  29. 11.8
  30. 1500
  31. 86.5
  32. 32.2
  33. 27000
  34. 80
  35. 85000
  36. 30
  37. 1800
  38. 15.4
  39. 80
  40. 56.6

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