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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 812 · 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 5 in 57.629? (a) 0.5 (b) 0.05 (c) 5 (d) 50
  2. 2.8.38 + 3.1 = ? (a) 11.48 (b) 8.69 (c) 11.58 (d) 11.38
  3. 3.2.76 + 5.1 = ? (a) 7.76 (b) 7.86 (c) 7.96 (d) 3.27
  4. 4.5.31 + 6.5 = ? (a) 5.96 (b) 11.81 (c) 11.91 (d) 11.71
  5. 5.Which is the smallest: 0.87, 0.8, 0.777, 0.093? (a) 0.87 (b) 0.8 (c) 0.777 (d) 0.093
  6. 6.Which is the greatest: 0.27, 0.2, 0.079, 0.167? (a) 0.27 (b) 0.2 (c) 0.079 (d) 0.167
  7. 7.3.43 + 3.1 = ? (a) 6.43 (b) 3.74 (c) 6.53 (d) 6.63
  8. 8.What is the value of the digit 5 in 17.532? (a) 5 (b) 0.005 (c) 0.5 (d) 0.05
  9. 9.Which is the greatest: 0.212, 0.36, 0.058, 0.3? (a) 0.212 (b) 0.36 (c) 0.058 (d) 0.3
  10. 10.Which is the greatest: 0.042, 0.8, 0.764, 0.87? (a) 0.042 (b) 0.8 (c) 0.764 (d) 0.87
  11. 11.1.68 + 3.5 = ? (a) 5.28 (b) 5.18 (c) 2.03 (d) 5.08
  12. 12.Which is the greatest: 0.099, 0.52, 0.437, 0.5? (a) 0.099 (b) 0.52 (c) 0.437 (d) 0.5
  13. 13.Which is the smallest: 0.3, 0.097, 0.32, 0.247? (a) 0.3 (b) 0.097 (c) 0.32 (d) 0.247
  14. 14.Which is the greatest: 0.051, 0.76, 0.7, 0.612? (a) 0.051 (b) 0.76 (c) 0.7 (d) 0.612
  15. 15.9.55 + 1.1 = ? (a) 10.65 (b) 10.55 (c) 9.66 (d) 10.75
  16. 16.8.07 + 8.9 = ? (a) 16.97 (b) 16.87 (c) 8.96 (d) 17.07
  17. 17.Which is the greatest: 0.31, 0.049, 0.212, 0.3? (a) 0.31 (b) 0.049 (c) 0.212 (d) 0.3
  18. 18.What is the value of the digit 5 in 16.859? (a) 0.5 (b) 5 (c) 0.05 (d) 0.005
  19. 19.Which is the smallest: 0.072, 0.3, 0.214, 0.31? (a) 0.072 (b) 0.3 (c) 0.214 (d) 0.31
  20. 20.What is the value of the digit 1 in 84.215? (a) 0.1 (b) 0.001 (c) 1 (d) 0.01
  21. 21.5.68 + 5.1 = ? (a) 10.68 (b) 10.88 (c) 6.19 (d) 10.78
  22. 22.7.65 + 1.3 = ? (a) 9.05 (b) 8.85 (c) 7.78 (d) 8.95
  23. 23.6.44 + 6.3 = ? (a) 12.74 (b) 12.64 (c) 7.07 (d) 12.84
  24. 24.7.89 + 5.6 = ? (a) 13.59 (b) 13.49 (c) 13.39 (d) 8.45
  25. 25.9.39 + 3.2 = ? (a) 12.59 (b) 12.49 (c) 9.71 (d) 12.69
  26. 26.Which is the smallest: 0.3, 0.073, 0.229, 0.37? (a) 0.3 (b) 0.073 (c) 0.229 (d) 0.37
  27. 27.1.03 + 2.5 = ? (a) 1.28 (b) 3.53 (c) 3.63 (d) 3.43
  28. 28.2.83 + 3.1 = ? (a) 6.03 (b) 5.93 (c) 5.83 (d) 3.14
  29. 29.Which is the smallest: 0.55, 0.5, 0.463, 0.015? (a) 0.55 (b) 0.5 (c) 0.463 (d) 0.015
  30. 30.What is the value of the digit 6 in 72.651? (a) 0.006 (b) 0.06 (c) 0.6 (d) 6
  31. 31.6.28 + 6.8 = ? (a) 13.18 (b) 12.98 (c) 6.96 (d) 13.08
  32. 32.7.81 + 4.7 = ? (a) 12.51 (b) 8.28 (c) 12.61 (d) 12.41
  33. 33.What is the value of the digit 7 in 21.734? (a) 0.07 (b) 0.007 (c) 7 (d) 0.7
  34. 34.What is the value of the digit 5 in 17.564? (a) 0.005 (b) 0.5 (c) 0.05 (d) 5
  35. 35.What is the value of the digit 4 in 65.493? (a) 4 (b) 0.04 (c) 0.4 (d) 0.004
  36. 36.What is the value of the digit 8 in 83.529? (a) 80 (b) 8 (c) 0.8 (d) 0.08
  37. 37.Which is the smallest: 0.293, 0.3, 0.33, 0.041? (a) 0.293 (b) 0.3 (c) 0.33 (d) 0.041
  38. 38.Which is the greatest: 0.088, 0.286, 0.3, 0.39? (a) 0.088 (b) 0.286 (c) 0.3 (d) 0.39
  39. 39.What is the value of the digit 2 in 96.234? (a) 0.02 (b) 2 (c) 0.2 (d) 0.002
  40. 40.3.84 + 2.2 = ? (a) 5.94 (b) 6.04 (c) 6.14 (d) 4.06

Answer key

  1. 50
  2. 11.48
  3. 7.86
  4. 11.81
  5. 0.093
  6. 0.27
  7. 6.53
  8. 0.5
  9. 0.36
  10. 0.87
  11. 5.18
  12. 0.52
  13. 0.097
  14. 0.76
  15. 10.65
  16. 16.97
  17. 0.31
  18. 0.05
  19. 0.072
  20. 0.01
  21. 10.78
  22. 8.95
  23. 12.74
  24. 13.49
  25. 12.59
  26. 0.073
  27. 3.53
  28. 5.93
  29. 0.015
  30. 0.6
  31. 13.08
  32. 12.51
  33. 0.7
  34. 0.5
  35. 0.4
  36. 80
  37. 0.041
  38. 0.39
  39. 0.2
  40. 6.04

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