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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 783 · 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. 1.7.55 + 7.9 = ? (a) 15.35 (b) 15.55 (c) 15.45 (d) 8.34
  2. 2.What is the value of the digit 8 in 95.832? (a) 8 (b) 0.008 (c) 0.08 (d) 0.8
  3. 3.Which is the greatest: 0.85, 0.8, 0.797, 0.051? (a) 0.85 (b) 0.8 (c) 0.797 (d) 0.051
  4. 4.5.35 + 9.3 = ? (a) 14.75 (b) 14.55 (c) 14.65 (d) 6.28
  5. 5.7.44 + 1.3 = ? (a) 8.64 (b) 8.74 (c) 7.57 (d) 8.84
  6. 6.Which is the greatest: 0.223, 0.3, 0.059, 0.38? (a) 0.223 (b) 0.3 (c) 0.059 (d) 0.38
  7. 7.4.98 + 8.1 = ? (a) 13.08 (b) 5.79 (c) 12.98 (d) 13.18
  8. 8.5.58 + 7.1 = ? (a) 6.29 (b) 12.78 (c) 12.58 (d) 12.68
  9. 9.2.29 + 8.8 = ? (a) 11.19 (b) 10.99 (c) 11.09 (d) 3.17
  10. 10.What is the value of the digit 2 in 16.239? (a) 2 (b) 0.2 (c) 0.02 (d) 0.002
  11. 11.What is the value of the digit 3 in 67.513? (a) 0.003 (b) 3 (c) 0.03 (d) 0.3
  12. 12.1.02 + 4.3 = ? (a) 1.45 (b) 5.22 (c) 5.32 (d) 5.42
  13. 13.What is the value of the digit 1 in 91.835? (a) 0.1 (b) 0.01 (c) 1 (d) 10
  14. 14.What is the value of the digit 1 in 12.379? (a) 0.01 (b) 0.1 (c) 10 (d) 1
  15. 15.Which is the greatest: 0.011, 0.425, 0.5, 0.55? (a) 0.011 (b) 0.425 (c) 0.5 (d) 0.55
  16. 16.What is the value of the digit 4 in 45.978? (a) 40 (b) 0.4 (c) 4 (d) 0.04
  17. 17.Which is the greatest: 0.88, 0.017, 0.8, 0.741? (a) 0.88 (b) 0.017 (c) 0.8 (d) 0.741
  18. 18.1.86 + 8.5 = ? (a) 2.71 (b) 10.26 (c) 10.36 (d) 10.46
  19. 19.6.71 + 6.8 = ? (a) 13.41 (b) 13.51 (c) 13.61 (d) 7.39
  20. 20.8.09 + 7.1 = ? (a) 15.29 (b) 8.8 (c) 15.09 (d) 15.19
  21. 21.What is the value of the digit 4 in 94.315? (a) 40 (b) 4 (c) 0.4 (d) 0.04
  22. 22.Which is the greatest: 0.037, 0.21, 0.176, 0.2? (a) 0.037 (b) 0.21 (c) 0.176 (d) 0.2
  23. 23.6.98 + 6.1 = ? (a) 12.98 (b) 7.59 (c) 13.08 (d) 13.18
  24. 24.What is the value of the digit 2 in 23.416? (a) 20 (b) 0.2 (c) 0.02 (d) 2
  25. 25.3.61 + 8.1 = ? (a) 4.42 (b) 11.61 (c) 11.71 (d) 11.81
  26. 26.Which is the greatest: 0.66, 0.6, 0.085, 0.537? (a) 0.66 (b) 0.6 (c) 0.085 (d) 0.537
  27. 27.2.45 + 3.7 = ? (a) 6.05 (b) 6.25 (c) 6.15 (d) 2.82
  28. 28.2.69 + 3.9 = ? (a) 6.69 (b) 6.49 (c) 6.59 (d) 3.08
  29. 29.1.21 + 7.9 = ? (a) 2 (b) 9.01 (c) 9.11 (d) 9.21
  30. 30.1.93 + 4.5 = ? (a) 6.53 (b) 6.33 (c) 2.38 (d) 6.43
  31. 31.What is the value of the digit 3 in 74.293? (a) 0.03 (b) 0.3 (c) 3 (d) 0.003
  32. 32.Which is the smallest: 0.019, 0.4, 0.46, 0.352? (a) 0.019 (b) 0.4 (c) 0.46 (d) 0.352
  33. 33.Which is the greatest: 0.634, 0.79, 0.7, 0.014? (a) 0.634 (b) 0.79 (c) 0.7 (d) 0.014
  34. 34.What is the value of the digit 8 in 68.531? (a) 0.08 (b) 0.8 (c) 80 (d) 8
  35. 35.Which is the greatest: 0.85, 0.057, 0.796, 0.8? (a) 0.85 (b) 0.057 (c) 0.796 (d) 0.8
  36. 36.1.64 + 5.8 = ? (a) 2.22 (b) 7.54 (c) 7.34 (d) 7.44
  37. 37.1.02 + 3.7 = ? (a) 4.62 (b) 4.72 (c) 1.39 (d) 4.82
  38. 38.What is the value of the digit 1 in 61.389? (a) 0.1 (b) 0.01 (c) 1 (d) 10
  39. 39.6.18 + 1.2 = ? (a) 7.28 (b) 7.48 (c) 7.38 (d) 6.3
  40. 40.Which is the greatest: 0.87, 0.087, 0.8, 0.736? (a) 0.87 (b) 0.087 (c) 0.8 (d) 0.736

Answer key

  1. 15.45
  2. 0.8
  3. 0.85
  4. 14.65
  5. 8.74
  6. 0.38
  7. 13.08
  8. 12.68
  9. 11.09
  10. 0.2
  11. 0.003
  12. 5.32
  13. 1
  14. 10
  15. 0.55
  16. 40
  17. 0.88
  18. 10.36
  19. 13.51
  20. 15.19
  21. 4
  22. 0.21
  23. 13.08
  24. 20
  25. 11.71
  26. 0.66
  27. 6.15
  28. 6.59
  29. 9.11
  30. 6.43
  31. 0.003
  32. 0.019
  33. 0.79
  34. 8
  35. 0.85
  36. 7.44
  37. 4.72
  38. 1
  39. 7.38
  40. 0.87

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