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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 784 · 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.Which is the greatest: 0.682, 0.7, 0.74, 0.065? (a) 0.682 (b) 0.7 (c) 0.74 (d) 0.065
  2. 2.What is the value of the digit 5 in 75.423? (a) 5 (b) 0.05 (c) 0.5 (d) 50
  3. 3.Which is the smallest: 0.424, 0.054, 0.51, 0.5? (a) 0.424 (b) 0.054 (c) 0.51 (d) 0.5
  4. 4.What is the value of the digit 2 in 12.369? (a) 20 (b) 0.02 (c) 2 (d) 0.2
  5. 5.Which is the smallest: 0.053, 0.66, 0.566, 0.6? (a) 0.053 (b) 0.66 (c) 0.566 (d) 0.6
  6. 6.3.58 + 6.4 = ? (a) 9.88 (b) 4.22 (c) 9.98 (d) 10.08
  7. 7.Which is the smallest: 0.231, 0.32, 0.025, 0.3? (a) 0.231 (b) 0.32 (c) 0.025 (d) 0.3
  8. 8.Which is the smallest: 0.074, 0.46, 0.327, 0.4? (a) 0.074 (b) 0.46 (c) 0.327 (d) 0.4
  9. 9.What is the value of the digit 1 in 78.451? (a) 0.01 (b) 1 (c) 0.001 (d) 0.1
  10. 10.Which is the greatest: 0.2, 0.023, 0.28, 0.185? (a) 0.2 (b) 0.023 (c) 0.28 (d) 0.185
  11. 11.3.67 + 2.3 = ? (a) 3.9 (b) 5.87 (c) 6.07 (d) 5.97
  12. 12.Which is the smallest: 0.47, 0.4, 0.345, 0.041? (a) 0.47 (b) 0.4 (c) 0.345 (d) 0.041
  13. 13.Which is the greatest: 0.73, 0.627, 0.038, 0.7? (a) 0.73 (b) 0.627 (c) 0.038 (d) 0.7
  14. 14.6.51 + 4.3 = ? (a) 6.94 (b) 10.71 (c) 10.91 (d) 10.81
  15. 15.6.82 + 5.7 = ? (a) 12.62 (b) 12.42 (c) 7.39 (d) 12.52
  16. 16.1.38 + 6.9 = ? (a) 8.28 (b) 8.18 (c) 8.38 (d) 2.07
  17. 17.9.78 + 7.9 = ? (a) 10.57 (b) 17.68 (c) 17.58 (d) 17.78
  18. 18.1.16 + 7.9 = ? (a) 8.96 (b) 9.06 (c) 1.95 (d) 9.16
  19. 19.What is the value of the digit 2 in 14.286? (a) 0.002 (b) 0.02 (c) 0.2 (d) 2
  20. 20.Which is the greatest: 0.54, 0.5, 0.475, 0.029? (a) 0.54 (b) 0.5 (c) 0.475 (d) 0.029
  21. 21.5.47 + 8.7 = ? (a) 14.07 (b) 6.34 (c) 14.17 (d) 14.27
  22. 22.Which is the smallest: 0.3, 0.251, 0.035, 0.37? (a) 0.3 (b) 0.251 (c) 0.035 (d) 0.37
  23. 23.Which is the greatest: 0.079, 0.6, 0.64, 0.535? (a) 0.079 (b) 0.6 (c) 0.64 (d) 0.535
  24. 24.8.83 + 1.8 = ? (a) 10.53 (b) 10.73 (c) 10.63 (d) 9.01
  25. 25.Which is the smallest: 0.23, 0.2, 0.147, 0.018? (a) 0.23 (b) 0.2 (c) 0.147 (d) 0.018
  26. 26.Which is the greatest: 0.75, 0.7, 0.025, 0.625? (a) 0.75 (b) 0.7 (c) 0.025 (d) 0.625
  27. 27.4.78 + 1.9 = ? (a) 6.58 (b) 6.78 (c) 6.68 (d) 4.97
  28. 28.Which is the smallest: 0.067, 0.126, 0.2, 0.22? (a) 0.067 (b) 0.126 (c) 0.2 (d) 0.22
  29. 29.Which is the greatest: 0.031, 0.2, 0.23, 0.144? (a) 0.031 (b) 0.2 (c) 0.23 (d) 0.144
  30. 30.Which is the smallest: 0.235, 0.082, 0.3, 0.39? (a) 0.235 (b) 0.082 (c) 0.3 (d) 0.39
  31. 31.2.79 + 1.6 = ? (a) 2.95 (b) 4.49 (c) 4.39 (d) 4.29
  32. 32.What is the value of the digit 4 in 75.148? (a) 0.004 (b) 4 (c) 0.4 (d) 0.04
  33. 33.Which is the smallest: 0.31, 0.3, 0.071, 0.263? (a) 0.31 (b) 0.3 (c) 0.071 (d) 0.263
  34. 34.What is the value of the digit 1 in 97.154? (a) 1 (b) 0.1 (c) 0.001 (d) 0.01
  35. 35.8.18 + 4.2 = ? (a) 12.28 (b) 8.6 (c) 12.38 (d) 12.48
  36. 36.Which is the greatest: 0.87, 0.731, 0.024, 0.8? (a) 0.87 (b) 0.731 (c) 0.024 (d) 0.8
  37. 37.6.01 + 1.9 = ? (a) 7.81 (b) 6.2 (c) 8.01 (d) 7.91
  38. 38.What is the value of the digit 1 in 74.961? (a) 0.1 (b) 1 (c) 0.01 (d) 0.001
  39. 39.Which is the smallest: 0.022, 0.352, 0.42, 0.4? (a) 0.022 (b) 0.352 (c) 0.42 (d) 0.4
  40. 40.2.64 + 3.1 = ? (a) 5.74 (b) 5.64 (c) 5.84 (d) 2.95

Answer key

  1. 0.74
  2. 5
  3. 0.054
  4. 2
  5. 0.053
  6. 9.98
  7. 0.025
  8. 0.074
  9. 0.001
  10. 0.28
  11. 5.97
  12. 0.041
  13. 0.73
  14. 10.81
  15. 12.52
  16. 8.28
  17. 17.68
  18. 9.06
  19. 0.2
  20. 0.54
  21. 14.17
  22. 0.035
  23. 0.64
  24. 10.63
  25. 0.018
  26. 0.75
  27. 6.68
  28. 0.067
  29. 0.23
  30. 0.082
  31. 4.39
  32. 0.04
  33. 0.071
  34. 0.1
  35. 12.38
  36. 0.87
  37. 7.91
  38. 0.001
  39. 0.022
  40. 5.74

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