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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 535 · 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.What is the value of the digit 8 in 37.498? (a) 0.8 (b) 8 (c) 0.08 (d) 0.008
  2. 2.What is the value of the digit 2 in 23.476? (a) 20 (b) 0.2 (c) 0.02 (d) 2
  3. 3.6.65 + 9.7 = ? (a) 16.45 (b) 7.62 (c) 16.25 (d) 16.35
  4. 4.Which is the greatest: 0.52, 0.5, 0.024, 0.423? (a) 0.52 (b) 0.5 (c) 0.024 (d) 0.423
  5. 5.Which is the greatest: 0.49, 0.035, 0.4, 0.336? (a) 0.49 (b) 0.035 (c) 0.4 (d) 0.336
  6. 6.3.73 + 3.4 = ? (a) 7.23 (b) 7.03 (c) 7.13 (d) 4.07
  7. 7.Which is the smallest: 0.032, 0.593, 0.65, 0.6? (a) 0.032 (b) 0.593 (c) 0.65 (d) 0.6
  8. 8.Which is the smallest: 0.26, 0.143, 0.048, 0.2? (a) 0.26 (b) 0.143 (c) 0.048 (d) 0.2
  9. 9.2.14 + 4.2 = ? (a) 2.56 (b) 6.34 (c) 6.44 (d) 6.24
  10. 10.What is the value of the digit 9 in 16.985? (a) 0.009 (b) 0.9 (c) 0.09 (d) 9
  11. 11.Which is the greatest: 0.129, 0.25, 0.2, 0.088? (a) 0.129 (b) 0.25 (c) 0.2 (d) 0.088
  12. 12.What is the value of the digit 9 in 91.423? (a) 9 (b) 0.9 (c) 0.09 (d) 90
  13. 13.1.18 + 2.2 = ? (a) 3.28 (b) 1.4 (c) 3.38 (d) 3.48
  14. 14.What is the value of the digit 8 in 12.846? (a) 0.008 (b) 0.08 (c) 0.8 (d) 8
  15. 15.What is the value of the digit 1 in 13.745? (a) 1 (b) 0.1 (c) 10 (d) 0.01
  16. 16.Which is the greatest: 0.061, 0.718, 0.81, 0.8? (a) 0.061 (b) 0.718 (c) 0.81 (d) 0.8
  17. 17.4.73 + 4.7 = ? (a) 9.43 (b) 9.53 (c) 5.2 (d) 9.33
  18. 18.1.58 + 6.3 = ? (a) 7.98 (b) 7.88 (c) 7.78 (d) 2.21
  19. 19.What is the value of the digit 7 in 94.871? (a) 0.07 (b) 7 (c) 0.7 (d) 0.007
  20. 20.6.51 + 2.8 = ? (a) 9.41 (b) 6.79 (c) 9.21 (d) 9.31
  21. 21.What is the value of the digit 8 in 45.387? (a) 0.08 (b) 0.8 (c) 0.008 (d) 8
  22. 22.2.61 + 3.2 = ? (a) 2.93 (b) 5.71 (c) 5.81 (d) 5.91
  23. 23.Which is the smallest: 0.4, 0.319, 0.43, 0.054? (a) 0.4 (b) 0.319 (c) 0.43 (d) 0.054
  24. 24.1.02 + 6.3 = ? (a) 1.65 (b) 7.42 (c) 7.22 (d) 7.32
  25. 25.8.82 + 9.9 = ? (a) 18.82 (b) 18.72 (c) 18.62 (d) 9.81
  26. 26.1.58 + 6.4 = ? (a) 7.98 (b) 2.22 (c) 8.08 (d) 7.88
  27. 27.7.72 + 1.7 = ? (a) 7.89 (b) 9.42 (c) 9.52 (d) 9.32
  28. 28.Which is the smallest: 0.5, 0.466, 0.59, 0.017? (a) 0.5 (b) 0.466 (c) 0.59 (d) 0.017
  29. 29.3.11 + 2.1 = ? (a) 5.31 (b) 5.11 (c) 3.32 (d) 5.21
  30. 30.What is the value of the digit 6 in 34.526? (a) 0.6 (b) 0.06 (c) 6 (d) 0.006
  31. 31.2.23 + 4.2 = ? (a) 6.53 (b) 6.33 (c) 2.65 (d) 6.43
  32. 32.Which is the smallest: 0.098, 0.86, 0.719, 0.8? (a) 0.098 (b) 0.86 (c) 0.719 (d) 0.8
  33. 33.Which is the smallest: 0.237, 0.36, 0.3, 0.034? (a) 0.237 (b) 0.36 (c) 0.3 (d) 0.034
  34. 34.6.06 + 2.6 = ? (a) 6.32 (b) 8.66 (c) 8.56 (d) 8.76
  35. 35.3.72 + 1.3 = ? (a) 3.85 (b) 5.12 (c) 4.92 (d) 5.02
  36. 36.Which is the greatest: 0.064, 0.42, 0.328, 0.4? (a) 0.064 (b) 0.42 (c) 0.328 (d) 0.4
  37. 37.Which is the greatest: 0.64, 0.594, 0.6, 0.013? (a) 0.64 (b) 0.594 (c) 0.6 (d) 0.013
  38. 38.2.19 + 4.6 = ? (a) 2.65 (b) 6.69 (c) 6.79 (d) 6.89
  39. 39.Which is the greatest: 0.018, 0.2, 0.152, 0.26? (a) 0.018 (b) 0.2 (c) 0.152 (d) 0.26
  40. 40.2.75 + 4.3 = ? (a) 3.18 (b) 7.15 (c) 7.05 (d) 6.95

Answer key

  1. 0.008
  2. 20
  3. 16.35
  4. 0.52
  5. 0.49
  6. 7.13
  7. 0.032
  8. 0.048
  9. 6.34
  10. 0.9
  11. 0.25
  12. 90
  13. 3.38
  14. 0.8
  15. 10
  16. 0.81
  17. 9.43
  18. 7.88
  19. 0.07
  20. 9.31
  21. 0.08
  22. 5.81
  23. 0.054
  24. 7.32
  25. 18.72
  26. 7.98
  27. 9.42
  28. 0.017
  29. 5.21
  30. 0.006
  31. 6.43
  32. 0.098
  33. 0.034
  34. 8.66
  35. 5.02
  36. 0.42
  37. 0.64
  38. 6.79
  39. 0.26
  40. 7.05

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