← Approximation and estimation lesson New set →

Approximation and Estimation Worksheet

Quantitative aptitude lesson 6: Approximation and estimation · Set 222 · 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 302 + 595 + 103? (a) 1200 (b) 1000 (c) 900 (d) 1100
  2. 2.Round 94259 to the nearest thousand.
  3. 3.Round 48.59 to one decimal place. =
  4. 4.Which is closest to 703 + 500 + 499? (a) 1800 (b) 1600 (c) 1900 (d) 1700
  5. 5.Which is closest to 2406 ÷ 39? (a) 600 (b) 60 (c) 120 (d) 30
  6. 6.Which is closest to 401 × 50? (Round each number first.) (a) 200000 (b) 2000 (c) 20000 (d) 40000
  7. 7.Round 77559 to the nearest thousand.
  8. 8.Which is closest to 1005 ÷ 19? (a) 100 (b) 25 (c) 500 (d) 50
  9. 9.Which is closest to 597 ÷ 31? (a) 200 (b) 40 (c) 10 (d) 20
  10. 10.Which is closest to 1207 ÷ 19? (a) 120 (b) 60 (c) 600 (d) 30
  11. 11.Which is closest to 700 + 302 + 295? (a) 1300 (b) 1500 (c) 1400 (d) 1200
  12. 12.Round 94550 to the nearest thousand.
  13. 13.Round 25.93 to one decimal place. =
  14. 14.Round 16.84 to one decimal place. =
  15. 15.Round 42.34 to one decimal place. =
  16. 16.Which is closest to 1791 ÷ 29? (a) 120 (b) 30 (c) 60 (d) 600
  17. 17.Round 49832 to the nearest ten.
  18. 18.Round 93.89 to one decimal place. =
  19. 19.Which is closest to 2108 ÷ 29? (a) 140 (b) 70 (c) 700 (d) 35
  20. 20.Which is closest to 1602 ÷ 19? (a) 160 (b) 800 (c) 40 (d) 80
  21. 21.Round 30806 to the nearest ten.
  22. 22.Round 73766 to the nearest ten.
  23. 23.Which is closest to 2006 ÷ 51? (a) 40 (b) 20 (c) 400 (d) 80
  24. 24.Round 11.44 to one decimal place. =
  25. 25.Which is closest to 400 ÷ 19? (a) 20 (b) 200 (c) 10 (d) 40
  26. 26.Which is closest to 198 × 58? (Round each number first.) (a) 12000 (b) 24000 (c) 120000 (d) 1200
  27. 27.Which is closest to 499 × 51? (Round each number first.) (a) 250000 (b) 2500 (c) 25000 (d) 50000
  28. 28.Round 75.32 to one decimal place. =
  29. 29.Which is closest to 602 + 895 + 201? (a) 1800 (b) 1900 (c) 1700 (d) 1600
  30. 30.Round 67.47 to one decimal place. =
  31. 31.Which is closest to 897 × 68? (Round each number first.) (a) 6300 (b) 63000 (c) 126000 (d) 630000
  32. 32.Which is closest to 196 × 91? (Round each number first.) (a) 36000 (b) 1800 (c) 18000 (d) 180000
  33. 33.Which is closest to 503 × 58? (Round each number first.) (a) 60000 (b) 30000 (c) 3000 (d) 300000
  34. 34.Round 82.12 to one decimal place. =
  35. 35.Round 88.34 to one decimal place. =
  36. 36.Round 25.69 to one decimal place. =
  37. 37.Which is closest to 4507 ÷ 49? (a) 900 (b) 180 (c) 45 (d) 90
  38. 38.Which is closest to 601 + 100 + 99? (a) 1000 (b) 900 (c) 700 (d) 800
  39. 39.Which is closest to 406 ÷ 19? (a) 20 (b) 40 (c) 10 (d) 200
  40. 40.Which is closest to 1797 ÷ 31? (a) 30 (b) 120 (c) 600 (d) 60

Answer key

  1. 1000
  2. 94000
  3. 48.6
  4. 1700
  5. 60
  6. 20000
  7. 78000
  8. 50
  9. 20
  10. 60
  11. 1300
  12. 95000
  13. 25.9
  14. 16.8
  15. 42.3
  16. 60
  17. 49830
  18. 93.9
  19. 70
  20. 80
  21. 30810
  22. 73770
  23. 40
  24. 11.4
  25. 20
  26. 12000
  27. 25000
  28. 75.3
  29. 1700
  30. 67.5
  31. 63000
  32. 18000
  33. 30000
  34. 82.1
  35. 88.3
  36. 25.7
  37. 90
  38. 800
  39. 20
  40. 60

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