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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 602 · 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: 0.6, 0.091, 0.572, 0.66? (a) 0.6 (b) 0.091 (c) 0.572 (d) 0.66
  2. 2.Which is the greatest: 0.079, 0.3, 0.36, 0.269? (a) 0.079 (b) 0.3 (c) 0.36 (d) 0.269
  3. 3.3.33 + 2.3 = ? (a) 5.63 (b) 5.53 (c) 3.56 (d) 5.73
  4. 4.Which is the greatest: 0.3, 0.38, 0.257, 0.052? (a) 0.3 (b) 0.38 (c) 0.257 (d) 0.052
  5. 5.Which is the smallest: 0.5, 0.59, 0.498, 0.038? (a) 0.5 (b) 0.59 (c) 0.498 (d) 0.038
  6. 6.What is the value of the digit 2 in 12.785? (a) 0.02 (b) 2 (c) 0.2 (d) 20
  7. 7.4.79 + 4.6 = ? (a) 9.29 (b) 5.25 (c) 9.39 (d) 9.49
  8. 8.3.64 + 7.2 = ? (a) 10.94 (b) 10.74 (c) 10.84 (d) 4.36
  9. 9.Which is the greatest: 0.389, 0.4, 0.49, 0.085? (a) 0.389 (b) 0.4 (c) 0.49 (d) 0.085
  10. 10.4.08 + 5.5 = ? (a) 4.63 (b) 9.58 (c) 9.68 (d) 9.48
  11. 11.Which is the smallest: 0.071, 0.85, 0.799, 0.8? (a) 0.071 (b) 0.85 (c) 0.799 (d) 0.8
  12. 12.7.55 + 4.2 = ? (a) 7.97 (b) 11.85 (c) 11.75 (d) 11.65
  13. 13.Which is the greatest: 0.5, 0.486, 0.59, 0.056? (a) 0.5 (b) 0.486 (c) 0.59 (d) 0.056
  14. 14.Which is the greatest: 0.756, 0.86, 0.025, 0.8? (a) 0.756 (b) 0.86 (c) 0.025 (d) 0.8
  15. 15.4.72 + 4.6 = ? (a) 9.32 (b) 5.18 (c) 9.22 (d) 9.42
  16. 16.What is the value of the digit 1 in 74.831? (a) 0.01 (b) 0.1 (c) 1 (d) 0.001
  17. 17.1.13 + 4.6 = ? (a) 5.63 (b) 5.83 (c) 1.59 (d) 5.73
  18. 18.What is the value of the digit 5 in 13.547? (a) 0.005 (b) 0.05 (c) 5 (d) 0.5
  19. 19.8.11 + 2.1 = ? (a) 10.31 (b) 8.32 (c) 10.11 (d) 10.21
  20. 20.6.52 + 5.5 = ? (a) 11.92 (b) 7.07 (c) 12.12 (d) 12.02
  21. 21.1.56 + 4.7 = ? (a) 6.16 (b) 6.26 (c) 2.03 (d) 6.36
  22. 22.4.21 + 5.1 = ? (a) 9.31 (b) 9.41 (c) 9.21 (d) 4.72
  23. 23.7.26 + 8.8 = ? (a) 16.16 (b) 15.96 (c) 8.14 (d) 16.06
  24. 24.2.52 + 1.1 = ? (a) 3.52 (b) 3.72 (c) 2.63 (d) 3.62
  25. 25.8.25 + 6.8 = ? (a) 8.93 (b) 15.05 (c) 14.95 (d) 15.15
  26. 26.What is the value of the digit 8 in 75.819? (a) 0.008 (b) 0.8 (c) 8 (d) 0.08
  27. 27.2.41 + 5.3 = ? (a) 7.71 (b) 2.94 (c) 7.81 (d) 7.61
  28. 28.4.02 + 6.1 = ? (a) 10.22 (b) 10.12 (c) 10.02 (d) 4.63
  29. 29.7.41 + 9.1 = ? (a) 16.61 (b) 16.51 (c) 16.41 (d) 8.32
  30. 30.6.59 + 1.6 = ? (a) 8.09 (b) 8.29 (c) 6.75 (d) 8.19
  31. 31.Which is the greatest: 0.5, 0.028, 0.52, 0.454? (a) 0.5 (b) 0.028 (c) 0.52 (d) 0.454
  32. 32.Which is the greatest: 0.47, 0.337, 0.4, 0.028? (a) 0.47 (b) 0.337 (c) 0.4 (d) 0.028
  33. 33.4.05 + 9.5 = ? (a) 5 (b) 13.55 (c) 13.45 (d) 13.65
  34. 34.4.67 + 6.7 = ? (a) 11.47 (b) 11.37 (c) 5.34 (d) 11.27
  35. 35.Which is the smallest: 0.048, 0.26, 0.122, 0.2? (a) 0.048 (b) 0.26 (c) 0.122 (d) 0.2
  36. 36.Which is the greatest: 0.6, 0.64, 0.573, 0.094? (a) 0.6 (b) 0.64 (c) 0.573 (d) 0.094
  37. 37.Which is the smallest: 0.38, 0.263, 0.3, 0.099? (a) 0.38 (b) 0.263 (c) 0.3 (d) 0.099
  38. 38.Which is the greatest: 0.183, 0.2, 0.049, 0.29? (a) 0.183 (b) 0.2 (c) 0.049 (d) 0.29
  39. 39.What is the value of the digit 3 in 93.726? (a) 0.3 (b) 0.03 (c) 3 (d) 30
  40. 40.What is the value of the digit 1 in 57.134? (a) 0.1 (b) 0.001 (c) 0.01 (d) 1

Answer key

  1. 0.66
  2. 0.36
  3. 5.63
  4. 0.38
  5. 0.038
  6. 2
  7. 9.39
  8. 10.84
  9. 0.49
  10. 9.58
  11. 0.071
  12. 11.75
  13. 0.59
  14. 0.86
  15. 9.32
  16. 0.001
  17. 5.73
  18. 0.5
  19. 10.21
  20. 12.02
  21. 6.26
  22. 9.31
  23. 16.06
  24. 3.62
  25. 15.05
  26. 0.8
  27. 7.71
  28. 10.12
  29. 16.51
  30. 8.19
  31. 0.52
  32. 0.47
  33. 13.55
  34. 11.37
  35. 0.048
  36. 0.64
  37. 0.099
  38. 0.29
  39. 3
  40. 0.1

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