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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 92 · 40 questions
TalentJR

How to solve it (Same number of places): Add zeros at the end so every decimal has the same number of places (0.5 = 0.500). Compare or add them like whole numbers, keeping the decimal points in a line. Place value after the point: tenths (0.1), hundredths (0.01), thousandths (0.001).

NameDateTime takenScore ___ / 40
  1. 1.7.97 + 9.1 = ? (a) 8.88 (b) 17.17 (c) 16.97 (d) 17.07
  2. 2.What is the value of the digit 6 in 65.843? (a) 0.6 (b) 6 (c) 0.06 (d) 60
  3. 3.3.78 + 2.1 = ? (a) 3.99 (b) 5.98 (c) 5.88 (d) 5.78
  4. 4.What is the value of the digit 4 in 34.968? (a) 4 (b) 0.04 (c) 40 (d) 0.4
  5. 5.Which is the greatest: 0.5, 0.55, 0.452, 0.082? (a) 0.5 (b) 0.55 (c) 0.452 (d) 0.082
  6. 6.9.49 + 2.5 = ? (a) 12.09 (b) 11.99 (c) 9.74 (d) 11.89
  7. 7.Which is the smallest: 0.2, 0.051, 0.26, 0.114? (a) 0.2 (b) 0.051 (c) 0.26 (d) 0.114
  8. 8.4.58 + 2.1 = ? (a) 6.68 (b) 4.79 (c) 6.78 (d) 6.58
  9. 9.4.98 + 2.9 = ? (a) 7.98 (b) 5.27 (c) 7.78 (d) 7.88
  10. 10.4.21 + 3.7 = ? (a) 7.81 (b) 4.58 (c) 7.91 (d) 8.01
  11. 11.8.99 + 2.8 = ? (a) 11.69 (b) 9.27 (c) 11.79 (d) 11.89
  12. 12.What is the value of the digit 9 in 96.531? (a) 0.9 (b) 9 (c) 90 (d) 0.09
  13. 13.4.13 + 3.7 = ? (a) 7.93 (b) 7.83 (c) 4.5 (d) 7.73
  14. 14.1.03 + 8.5 = ? (a) 1.88 (b) 9.43 (c) 9.53 (d) 9.63
  15. 15.What is the value of the digit 6 in 85.361? (a) 0.06 (b) 0.006 (c) 0.6 (d) 6
  16. 16.Which is the smallest: 0.5, 0.59, 0.418, 0.019? (a) 0.5 (b) 0.59 (c) 0.418 (d) 0.019
  17. 17.What is the value of the digit 4 in 56.148? (a) 4 (b) 0.004 (c) 0.04 (d) 0.4
  18. 18.3.17 + 2.4 = ? (a) 5.47 (b) 5.67 (c) 3.41 (d) 5.57
  19. 19.Which is the greatest: 0.062, 0.28, 0.2, 0.177? (a) 0.062 (b) 0.28 (c) 0.2 (d) 0.177
  20. 20.Which is the greatest: 0.149, 0.2, 0.24, 0.022? (a) 0.149 (b) 0.2 (c) 0.24 (d) 0.022
  21. 21.Which is the smallest: 0.444, 0.51, 0.5, 0.013? (a) 0.444 (b) 0.51 (c) 0.5 (d) 0.013
  22. 22.4.17 + 2.7 = ? (a) 6.97 (b) 6.87 (c) 6.77 (d) 4.44
  23. 23.Which is the greatest: 0.67, 0.6, 0.513, 0.052? (a) 0.67 (b) 0.6 (c) 0.513 (d) 0.052
  24. 24.What is the value of the digit 4 in 73.124? (a) 0.4 (b) 4 (c) 0.04 (d) 0.004
  25. 25.5.14 + 1.8 = ? (a) 5.32 (b) 6.84 (c) 6.94 (d) 7.04
  26. 26.Which is the smallest: 0.735, 0.86, 0.033, 0.8? (a) 0.735 (b) 0.86 (c) 0.033 (d) 0.8
  27. 27.2.58 + 3.6 = ? (a) 6.08 (b) 6.18 (c) 2.94 (d) 6.28
  28. 28.What is the value of the digit 6 in 32.569? (a) 6 (b) 0.6 (c) 0.06 (d) 0.006
  29. 29.Which is the smallest: 0.36, 0.249, 0.031, 0.3? (a) 0.36 (b) 0.249 (c) 0.031 (d) 0.3
  30. 30.What is the value of the digit 2 in 74.621? (a) 0.02 (b) 0.002 (c) 0.2 (d) 2
  31. 31.Which is the greatest: 0.355, 0.41, 0.4, 0.025? (a) 0.355 (b) 0.41 (c) 0.4 (d) 0.025
  32. 32.Which is the greatest: 0.84, 0.779, 0.063, 0.8? (a) 0.84 (b) 0.779 (c) 0.063 (d) 0.8
  33. 33.What is the value of the digit 7 in 72.493? (a) 70 (b) 0.07 (c) 7 (d) 0.7
  34. 34.2.99 + 7.6 = ? (a) 10.49 (b) 10.59 (c) 10.69 (d) 3.75
  35. 35.What is the value of the digit 1 in 51.784? (a) 1 (b) 0.01 (c) 0.1 (d) 10
  36. 36.8.16 + 7.7 = ? (a) 15.96 (b) 15.76 (c) 8.93 (d) 15.86
  37. 37.4.45 + 9.7 = ? (a) 14.25 (b) 14.05 (c) 5.42 (d) 14.15
  38. 38.1.65 + 1.2 = ? (a) 1.77 (b) 2.85 (c) 2.95 (d) 2.75
  39. 39.What is the value of the digit 7 in 94.571? (a) 0.7 (b) 7 (c) 0.07 (d) 0.007
  40. 40.What is the value of the digit 9 in 42.593? (a) 9 (b) 0.9 (c) 0.09 (d) 0.009

Answer key

  1. 17.07
  2. 60
  3. 5.88
  4. 4
  5. 0.55
  6. 11.99
  7. 0.051
  8. 6.68
  9. 7.88
  10. 7.91
  11. 11.79
  12. 90
  13. 7.83
  14. 9.53
  15. 0.06
  16. 0.019
  17. 0.04
  18. 5.57
  19. 0.28
  20. 0.24
  21. 0.013
  22. 6.87
  23. 0.67
  24. 0.004
  25. 6.94
  26. 0.033
  27. 6.18
  28. 0.06
  29. 0.031
  30. 0.02
  31. 0.41
  32. 0.84
  33. 70
  34. 10.59
  35. 1
  36. 15.86
  37. 14.15
  38. 2.85
  39. 0.07
  40. 0.09

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