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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 324 · 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 6 in 12.649? (a) 0.06 (b) 6 (c) 0.6 (d) 0.006
  2. 2.2.37 + 5.2 = ? (a) 7.67 (b) 2.89 (c) 7.57 (d) 7.47
  3. 3.2.31 + 5.9 = ? (a) 8.21 (b) 2.9 (c) 8.11 (d) 8.31
  4. 4.Which is the smallest: 0.487, 0.5, 0.59, 0.089? (a) 0.487 (b) 0.5 (c) 0.59 (d) 0.089
  5. 5.Which is the greatest: 0.2, 0.197, 0.28, 0.033? (a) 0.2 (b) 0.197 (c) 0.28 (d) 0.033
  6. 6.Which is the smallest: 0.42, 0.371, 0.044, 0.4? (a) 0.42 (b) 0.371 (c) 0.044 (d) 0.4
  7. 7.What is the value of the digit 8 in 34.896? (a) 8 (b) 0.8 (c) 0.008 (d) 0.08
  8. 8.Which is the greatest: 0.122, 0.051, 0.2, 0.25? (a) 0.122 (b) 0.051 (c) 0.2 (d) 0.25
  9. 9.Which is the smallest: 0.74, 0.081, 0.638, 0.7? (a) 0.74 (b) 0.081 (c) 0.638 (d) 0.7
  10. 10.Which is the greatest: 0.89, 0.799, 0.062, 0.8? (a) 0.89 (b) 0.799 (c) 0.062 (d) 0.8
  11. 11.3.49 + 6.3 = ? (a) 9.89 (b) 9.79 (c) 9.69 (d) 4.12
  12. 12.Which is the greatest: 0.8, 0.87, 0.767, 0.055? (a) 0.8 (b) 0.87 (c) 0.767 (d) 0.055
  13. 13.What is the value of the digit 1 in 15.329? (a) 0.01 (b) 10 (c) 0.1 (d) 1
  14. 14.2.29 + 7.8 = ? (a) 9.99 (b) 10.19 (c) 3.07 (d) 10.09
  15. 15.What is the value of the digit 5 in 35.981? (a) 0.5 (b) 50 (c) 5 (d) 0.05
  16. 16.5.12 + 8.8 = ? (a) 13.92 (b) 14.02 (c) 6 (d) 13.82
  17. 17.6.29 + 2.8 = ? (a) 9.09 (b) 9.19 (c) 6.57 (d) 8.99
  18. 18.5.63 + 1.3 = ? (a) 5.76 (b) 6.93 (c) 6.83 (d) 7.03
  19. 19.5.85 + 1.4 = ? (a) 7.35 (b) 7.15 (c) 7.25 (d) 5.99
  20. 20.What is the value of the digit 8 in 91.852? (a) 0.008 (b) 0.08 (c) 0.8 (d) 8
  21. 21.1.68 + 4.2 = ? (a) 5.78 (b) 5.88 (c) 2.1 (d) 5.98
  22. 22.3.81 + 9.1 = ? (a) 4.72 (b) 12.81 (c) 13.01 (d) 12.91
  23. 23.What is the value of the digit 7 in 71.546? (a) 7 (b) 70 (c) 0.7 (d) 0.07
  24. 24.What is the value of the digit 2 in 46.532? (a) 0.02 (b) 0.2 (c) 2 (d) 0.002
  25. 25.Which is the greatest: 0.59, 0.5, 0.059, 0.457? (a) 0.59 (b) 0.5 (c) 0.059 (d) 0.457
  26. 26.What is the value of the digit 9 in 39.821? (a) 90 (b) 0.09 (c) 9 (d) 0.9
  27. 27.2.35 + 4.1 = ? (a) 6.55 (b) 2.76 (c) 6.35 (d) 6.45
  28. 28.What is the value of the digit 2 in 69.452? (a) 0.2 (b) 0.02 (c) 0.002 (d) 2
  29. 29.Which is the smallest: 0.097, 0.257, 0.3, 0.37? (a) 0.097 (b) 0.257 (c) 0.3 (d) 0.37
  30. 30.Which is the greatest: 0.5, 0.011, 0.54, 0.422? (a) 0.5 (b) 0.011 (c) 0.54 (d) 0.422
  31. 31.What is the value of the digit 7 in 73.698? (a) 70 (b) 0.7 (c) 7 (d) 0.07
  32. 32.Which is the greatest: 0.71, 0.054, 0.659, 0.7? (a) 0.71 (b) 0.054 (c) 0.659 (d) 0.7
  33. 33.Which is the smallest: 0.067, 0.425, 0.5, 0.54? (a) 0.067 (b) 0.425 (c) 0.5 (d) 0.54
  34. 34.8.59 + 6.1 = ? (a) 9.2 (b) 14.79 (c) 14.59 (d) 14.69
  35. 35.Which is the greatest: 0.44, 0.058, 0.4, 0.321? (a) 0.44 (b) 0.058 (c) 0.4 (d) 0.321
  36. 36.4.26 + 1.5 = ? (a) 5.76 (b) 5.66 (c) 4.41 (d) 5.86
  37. 37.Which is the smallest: 0.78, 0.654, 0.7, 0.046? (a) 0.78 (b) 0.654 (c) 0.7 (d) 0.046
  38. 38.Which is the smallest: 0.38, 0.037, 0.3, 0.232? (a) 0.38 (b) 0.037 (c) 0.3 (d) 0.232
  39. 39.2.81 + 9.1 = ? (a) 3.72 (b) 12.01 (c) 11.81 (d) 11.91
  40. 40.9.47 + 2.4 = ? (a) 11.87 (b) 9.71 (c) 11.97 (d) 11.77

Answer key

  1. 0.6
  2. 7.57
  3. 8.21
  4. 0.089
  5. 0.28
  6. 0.044
  7. 0.8
  8. 0.25
  9. 0.081
  10. 0.89
  11. 9.79
  12. 0.87
  13. 10
  14. 10.09
  15. 5
  16. 13.92
  17. 9.09
  18. 6.93
  19. 7.25
  20. 0.8
  21. 5.88
  22. 12.91
  23. 70
  24. 0.002
  25. 0.59
  26. 9
  27. 6.45
  28. 0.002
  29. 0.097
  30. 0.54
  31. 70
  32. 0.71
  33. 0.067
  34. 14.69
  35. 0.44
  36. 5.76
  37. 0.046
  38. 0.037
  39. 11.91
  40. 11.87

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