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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 529 · 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 7 in 32.974? (a) 7 (b) 0.007 (c) 0.7 (d) 0.07
  2. 2.3.24 + 6.1 = ? (a) 3.85 (b) 9.44 (c) 9.34 (d) 9.24
  3. 3.2.92 + 8.5 = ? (a) 11.32 (b) 11.52 (c) 3.77 (d) 11.42
  4. 4.Which is the smallest: 0.031, 0.41, 0.4, 0.358? (a) 0.031 (b) 0.41 (c) 0.4 (d) 0.358
  5. 5.What is the value of the digit 9 in 39.618? (a) 90 (b) 0.9 (c) 0.09 (d) 9
  6. 6.What is the value of the digit 5 in 83.715? (a) 5 (b) 0.5 (c) 0.05 (d) 0.005
  7. 7.Which is the smallest: 0.89, 0.054, 0.756, 0.8? (a) 0.89 (b) 0.054 (c) 0.756 (d) 0.8
  8. 8.What is the value of the digit 5 in 32.854? (a) 0.005 (b) 0.5 (c) 5 (d) 0.05
  9. 9.4.76 + 5.6 = ? (a) 10.46 (b) 10.26 (c) 5.32 (d) 10.36
  10. 10.Which is the smallest: 0.062, 0.68, 0.6, 0.596? (a) 0.062 (b) 0.68 (c) 0.6 (d) 0.596
  11. 11.What is the value of the digit 1 in 61.723? (a) 0.01 (b) 10 (c) 1 (d) 0.1
  12. 12.Which is the smallest: 0.044, 0.4, 0.325, 0.47? (a) 0.044 (b) 0.4 (c) 0.325 (d) 0.47
  13. 13.What is the value of the digit 4 in 37.614? (a) 0.004 (b) 0.4 (c) 4 (d) 0.04
  14. 14.4.42 + 7.7 = ? (a) 12.12 (b) 12.22 (c) 12.02 (d) 5.19
  15. 15.9.25 + 1.3 = ? (a) 10.45 (b) 9.38 (c) 10.55 (d) 10.65
  16. 16.1.86 + 1.1 = ? (a) 3.06 (b) 1.97 (c) 2.96 (d) 2.86
  17. 17.2.95 + 3.4 = ? (a) 6.45 (b) 3.29 (c) 6.25 (d) 6.35
  18. 18.6.47 + 9.2 = ? (a) 15.67 (b) 7.39 (c) 15.57 (d) 15.77
  19. 19.8.98 + 7.7 = ? (a) 9.75 (b) 16.68 (c) 16.58 (d) 16.78
  20. 20.Which is the smallest: 0.068, 0.689, 0.7, 0.76? (a) 0.068 (b) 0.689 (c) 0.7 (d) 0.76
  21. 21.Which is the greatest: 0.618, 0.71, 0.7, 0.064? (a) 0.618 (b) 0.71 (c) 0.7 (d) 0.064
  22. 22.6.43 + 1.8 = ? (a) 8.23 (b) 8.13 (c) 6.61 (d) 8.33
  23. 23.9.26 + 4.9 = ? (a) 14.06 (b) 14.16 (c) 14.26 (d) 9.75
  24. 24.Which is the smallest: 0.62, 0.558, 0.094, 0.6? (a) 0.62 (b) 0.558 (c) 0.094 (d) 0.6
  25. 25.Which is the smallest: 0.066, 0.25, 0.117, 0.2? (a) 0.066 (b) 0.25 (c) 0.117 (d) 0.2
  26. 26.What is the value of the digit 1 in 69.712? (a) 1 (b) 0.01 (c) 0.1 (d) 0.001
  27. 27.Which is the greatest: 0.2, 0.21, 0.126, 0.059? (a) 0.2 (b) 0.21 (c) 0.126 (d) 0.059
  28. 28.What is the value of the digit 1 in 18.452? (a) 0.01 (b) 10 (c) 0.1 (d) 1
  29. 29.9.82 + 2.4 = ? (a) 10.06 (b) 12.32 (c) 12.12 (d) 12.22
  30. 30.Which is the smallest: 0.45, 0.328, 0.055, 0.4? (a) 0.45 (b) 0.328 (c) 0.055 (d) 0.4
  31. 31.What is the value of the digit 5 in 28.597? (a) 0.05 (b) 5 (c) 0.5 (d) 0.005
  32. 32.8.31 + 8.1 = ? (a) 16.41 (b) 16.51 (c) 9.12 (d) 16.31
  33. 33.What is the value of the digit 7 in 67.238? (a) 0.7 (b) 70 (c) 0.07 (d) 7
  34. 34.What is the value of the digit 5 in 94.513? (a) 0.05 (b) 0.005 (c) 0.5 (d) 5
  35. 35.Which is the smallest: 0.796, 0.084, 0.8, 0.84? (a) 0.796 (b) 0.084 (c) 0.8 (d) 0.84
  36. 36.Which is the smallest: 0.161, 0.2, 0.23, 0.089? (a) 0.161 (b) 0.2 (c) 0.23 (d) 0.089
  37. 37.3.96 + 2.6 = ? (a) 6.56 (b) 6.46 (c) 4.22 (d) 6.66
  38. 38.Which is the smallest: 0.046, 0.399, 0.44, 0.4? (a) 0.046 (b) 0.399 (c) 0.44 (d) 0.4
  39. 39.4.71 + 8.1 = ? (a) 12.71 (b) 5.52 (c) 12.91 (d) 12.81
  40. 40.What is the value of the digit 2 in 62.743? (a) 2 (b) 0.2 (c) 0.02 (d) 20

Answer key

  1. 0.07
  2. 9.34
  3. 11.42
  4. 0.031
  5. 9
  6. 0.005
  7. 0.054
  8. 0.05
  9. 10.36
  10. 0.062
  11. 1
  12. 0.044
  13. 0.004
  14. 12.12
  15. 10.55
  16. 2.96
  17. 6.35
  18. 15.67
  19. 16.68
  20. 0.068
  21. 0.71
  22. 8.23
  23. 14.16
  24. 0.094
  25. 0.066
  26. 0.01
  27. 0.21
  28. 10
  29. 12.22
  30. 0.055
  31. 0.5
  32. 16.41
  33. 7
  34. 0.5
  35. 0.084
  36. 0.089
  37. 6.56
  38. 0.046
  39. 12.81
  40. 2

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