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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 704 · 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. 1.3.43 + 4.8 = ? (a) 8.33 (b) 8.23 (c) 8.13 (d) 3.91
  2. 2.9.68 + 3.1 = ? (a) 12.68 (b) 12.78 (c) 12.88 (d) 9.99
  3. 3.Which is the greatest: 0.49, 0.4, 0.019, 0.356? (a) 0.49 (b) 0.4 (c) 0.019 (d) 0.356
  4. 4.What is the value of the digit 1 in 43.126? (a) 1 (b) 0.1 (c) 0.001 (d) 0.01
  5. 5.Which is the greatest: 0.275, 0.32, 0.3, 0.015? (a) 0.275 (b) 0.32 (c) 0.3 (d) 0.015
  6. 6.Which is the smallest: 0.221, 0.042, 0.3, 0.39? (a) 0.221 (b) 0.042 (c) 0.3 (d) 0.39
  7. 7.Which is the greatest: 0.57, 0.023, 0.462, 0.5? (a) 0.57 (b) 0.023 (c) 0.462 (d) 0.5
  8. 8.What is the value of the digit 7 in 29.347? (a) 0.07 (b) 0.7 (c) 7 (d) 0.007
  9. 9.Which is the smallest: 0.6, 0.093, 0.66, 0.545? (a) 0.6 (b) 0.093 (c) 0.66 (d) 0.545
  10. 10.Which is the greatest: 0.718, 0.84, 0.027, 0.8? (a) 0.718 (b) 0.84 (c) 0.027 (d) 0.8
  11. 11.6.14 + 3.2 = ? (a) 9.34 (b) 9.44 (c) 6.46 (d) 9.24
  12. 12.What is the value of the digit 3 in 32.485? (a) 0.03 (b) 0.3 (c) 30 (d) 3
  13. 13.What is the value of the digit 9 in 57.193? (a) 0.009 (b) 0.09 (c) 9 (d) 0.9
  14. 14.What is the value of the digit 6 in 63.542? (a) 0.6 (b) 0.06 (c) 6 (d) 60
  15. 15.9.71 + 6.3 = ? (a) 10.34 (b) 16.11 (c) 16.01 (d) 15.91
  16. 16.6.98 + 8.2 = ? (a) 15.18 (b) 7.8 (c) 15.08 (d) 15.28
  17. 17.Which is the smallest: 0.32, 0.216, 0.091, 0.3? (a) 0.32 (b) 0.216 (c) 0.091 (d) 0.3
  18. 18.What is the value of the digit 5 in 61.854? (a) 0.5 (b) 5 (c) 0.05 (d) 0.005
  19. 19.2.02 + 7.8 = ? (a) 9.72 (b) 9.92 (c) 9.82 (d) 2.8
  20. 20.What is the value of the digit 5 in 13.548? (a) 0.005 (b) 0.05 (c) 0.5 (d) 5
  21. 21.3.65 + 5.7 = ? (a) 9.35 (b) 9.25 (c) 9.45 (d) 4.22
  22. 22.6.81 + 9.1 = ? (a) 7.72 (b) 15.81 (c) 16.01 (d) 15.91
  23. 23.Which is the smallest: 0.42, 0.073, 0.4, 0.321? (a) 0.42 (b) 0.073 (c) 0.4 (d) 0.321
  24. 24.What is the value of the digit 9 in 51.829? (a) 0.009 (b) 0.09 (c) 9 (d) 0.9
  25. 25.1.16 + 7.9 = ? (a) 1.95 (b) 8.96 (c) 9.16 (d) 9.06
  26. 26.4.61 + 8.1 = ? (a) 12.81 (b) 12.61 (c) 5.42 (d) 12.71
  27. 27.1.85 + 1.1 = ? (a) 2.95 (b) 3.05 (c) 2.85 (d) 1.96
  28. 28.6.91 + 3.1 = ? (a) 10.01 (b) 10.11 (c) 9.91 (d) 7.22
  29. 29.What is the value of the digit 3 in 96.237? (a) 0.3 (b) 3 (c) 0.003 (d) 0.03
  30. 30.What is the value of the digit 5 in 62.584? (a) 0.005 (b) 0.5 (c) 0.05 (d) 5
  31. 31.What is the value of the digit 2 in 49.128? (a) 2 (b) 0.02 (c) 0.002 (d) 0.2
  32. 32.Which is the greatest: 0.088, 0.525, 0.6, 0.68? (a) 0.088 (b) 0.525 (c) 0.6 (d) 0.68
  33. 33.What is the value of the digit 8 in 84.912? (a) 0.8 (b) 0.08 (c) 80 (d) 8
  34. 34.5.92 + 9.5 = ? (a) 15.42 (b) 6.87 (c) 15.52 (d) 15.32
  35. 35.Which is the greatest: 0.2, 0.27, 0.033, 0.192? (a) 0.2 (b) 0.27 (c) 0.033 (d) 0.192
  36. 36.Which is the smallest: 0.614, 0.048, 0.7, 0.79? (a) 0.614 (b) 0.048 (c) 0.7 (d) 0.79
  37. 37.2.64 + 8.5 = ? (a) 11.14 (b) 11.24 (c) 11.04 (d) 3.49
  38. 38.1.01 + 7.8 = ? (a) 8.91 (b) 8.71 (c) 8.81 (d) 1.79
  39. 39.Which is the smallest: 0.512, 0.6, 0.61, 0.031? (a) 0.512 (b) 0.6 (c) 0.61 (d) 0.031
  40. 40.4.33 + 2.2 = ? (a) 6.43 (b) 4.55 (c) 6.63 (d) 6.53

Answer key

  1. 8.23
  2. 12.78
  3. 0.49
  4. 0.1
  5. 0.32
  6. 0.042
  7. 0.57
  8. 0.007
  9. 0.093
  10. 0.84
  11. 9.34
  12. 30
  13. 0.09
  14. 60
  15. 16.01
  16. 15.18
  17. 0.091
  18. 0.05
  19. 9.82
  20. 0.5
  21. 9.35
  22. 15.91
  23. 0.073
  24. 0.009
  25. 9.06
  26. 12.71
  27. 2.95
  28. 10.01
  29. 0.03
  30. 0.5
  31. 0.02
  32. 0.68
  33. 80
  34. 15.42
  35. 0.27
  36. 0.048
  37. 11.14
  38. 8.81
  39. 0.031
  40. 6.53

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