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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 911 · 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: 0.024, 0.85, 0.8, 0.781? (a) 0.024 (b) 0.85 (c) 0.8 (d) 0.781
  2. 2.Which is the greatest: 0.65, 0.531, 0.6, 0.034? (a) 0.65 (b) 0.531 (c) 0.6 (d) 0.034
  3. 3.8.98 + 2.6 = ? (a) 11.68 (b) 9.24 (c) 11.58 (d) 11.48
  4. 4.4.69 + 8.4 = ? (a) 13.09 (b) 5.53 (c) 13.19 (d) 12.99
  5. 5.7.81 + 5.4 = ? (a) 13.21 (b) 13.31 (c) 8.35 (d) 13.11
  6. 6.Which is the smallest: 0.018, 0.3, 0.247, 0.33? (a) 0.018 (b) 0.3 (c) 0.247 (d) 0.33
  7. 7.Which is the greatest: 0.52, 0.014, 0.493, 0.5? (a) 0.52 (b) 0.014 (c) 0.493 (d) 0.5
  8. 8.2.07 + 8.8 = ? (a) 10.97 (b) 2.95 (c) 10.87 (d) 10.77
  9. 9.Which is the smallest: 0.125, 0.2, 0.23, 0.012? (a) 0.125 (b) 0.2 (c) 0.23 (d) 0.012
  10. 10.Which is the smallest: 0.016, 0.2, 0.23, 0.137? (a) 0.016 (b) 0.2 (c) 0.23 (d) 0.137
  11. 11.What is the value of the digit 8 in 91.832? (a) 0.008 (b) 0.08 (c) 8 (d) 0.8
  12. 12.What is the value of the digit 4 in 97.348? (a) 4 (b) 0.004 (c) 0.04 (d) 0.4
  13. 13.What is the value of the digit 2 in 32.875? (a) 20 (b) 2 (c) 0.02 (d) 0.2
  14. 14.4.25 + 2.1 = ? (a) 6.45 (b) 4.46 (c) 6.25 (d) 6.35
  15. 15.What is the value of the digit 1 in 27.481? (a) 0.01 (b) 0.1 (c) 1 (d) 0.001
  16. 16.Which is the smallest: 0.217, 0.32, 0.3, 0.081? (a) 0.217 (b) 0.32 (c) 0.3 (d) 0.081
  17. 17.Which is the greatest: 0.622, 0.7, 0.76, 0.073? (a) 0.622 (b) 0.7 (c) 0.76 (d) 0.073
  18. 18.8.54 + 4.1 = ? (a) 12.74 (b) 8.95 (c) 12.64 (d) 12.54
  19. 19.5.58 + 1.3 = ? (a) 6.88 (b) 6.98 (c) 5.71 (d) 6.78
  20. 20.What is the value of the digit 1 in 31.976? (a) 1 (b) 0.01 (c) 10 (d) 0.1
  21. 21.Which is the greatest: 0.21, 0.056, 0.2, 0.136? (a) 0.21 (b) 0.056 (c) 0.2 (d) 0.136
  22. 22.Which is the greatest: 0.569, 0.6, 0.014, 0.69? (a) 0.569 (b) 0.6 (c) 0.014 (d) 0.69
  23. 23.Which is the greatest: 0.25, 0.2, 0.147, 0.068? (a) 0.25 (b) 0.2 (c) 0.147 (d) 0.068
  24. 24.What is the value of the digit 6 in 38.624? (a) 0.6 (b) 0.06 (c) 6 (d) 0.006
  25. 25.What is the value of the digit 8 in 96.284? (a) 0.8 (b) 8 (c) 0.08 (d) 0.008
  26. 26.What is the value of the digit 3 in 12.683? (a) 0.3 (b) 0.003 (c) 3 (d) 0.03
  27. 27.Which is the greatest: 0.049, 0.41, 0.4, 0.324? (a) 0.049 (b) 0.41 (c) 0.4 (d) 0.324
  28. 28.9.91 + 7.7 = ? (a) 10.68 (b) 17.51 (c) 17.61 (d) 17.71
  29. 29.What is the value of the digit 2 in 75.326? (a) 0.2 (b) 0.002 (c) 0.02 (d) 2
  30. 30.What is the value of the digit 1 in 78.134? (a) 0.1 (b) 0.001 (c) 1 (d) 0.01
  31. 31.6.23 + 7.9 = ? (a) 14.23 (b) 14.03 (c) 7.02 (d) 14.13
  32. 32.5.99 + 3.1 = ? (a) 8.99 (b) 6.3 (c) 9.09 (d) 9.19
  33. 33.Which is the smallest: 0.051, 0.545, 0.6, 0.66? (a) 0.051 (b) 0.545 (c) 0.6 (d) 0.66
  34. 34.7.19 + 4.1 = ? (a) 11.29 (b) 11.19 (c) 7.6 (d) 11.39
  35. 35.3.08 + 9.7 = ? (a) 12.78 (b) 4.05 (c) 12.88 (d) 12.68
  36. 36.What is the value of the digit 5 in 96.815? (a) 0.5 (b) 0.05 (c) 5 (d) 0.005
  37. 37.7.52 + 9.2 = ? (a) 16.62 (b) 16.72 (c) 16.82 (d) 8.44
  38. 38.What is the value of the digit 5 in 35.129? (a) 0.05 (b) 50 (c) 0.5 (d) 5
  39. 39.2.88 + 2.2 = ? (a) 5.08 (b) 3.1 (c) 4.98 (d) 5.18
  40. 40.What is the value of the digit 2 in 21.894? (a) 2 (b) 0.2 (c) 0.02 (d) 20

Answer key

  1. 0.85
  2. 0.65
  3. 11.58
  4. 13.09
  5. 13.21
  6. 0.018
  7. 0.52
  8. 10.87
  9. 0.012
  10. 0.016
  11. 0.8
  12. 0.04
  13. 2
  14. 6.35
  15. 0.001
  16. 0.081
  17. 0.76
  18. 12.64
  19. 6.88
  20. 1
  21. 0.21
  22. 0.69
  23. 0.25
  24. 0.6
  25. 0.08
  26. 0.003
  27. 0.41
  28. 17.61
  29. 0.02
  30. 0.1
  31. 14.13
  32. 9.09
  33. 0.051
  34. 11.29
  35. 12.78
  36. 0.005
  37. 16.72
  38. 5
  39. 5.08
  40. 20

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