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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 842 · 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. 1.4.94 + 7.5 = ? (a) 12.34 (b) 12.44 (c) 12.54 (d) 5.69
  2. 2.Which is the greatest: 0.5, 0.439, 0.021, 0.51? (a) 0.5 (b) 0.439 (c) 0.021 (d) 0.51
  3. 3.4.29 + 1.9 = ? (a) 6.29 (b) 6.09 (c) 6.19 (d) 4.48
  4. 4.What is the value of the digit 7 in 72.364? (a) 7 (b) 0.7 (c) 0.07 (d) 70
  5. 5.7.75 + 7.8 = ? (a) 8.53 (b) 15.45 (c) 15.65 (d) 15.55
  6. 6.What is the value of the digit 6 in 51.946? (a) 0.06 (b) 0.006 (c) 6 (d) 0.6
  7. 7.What is the value of the digit 1 in 12.459? (a) 10 (b) 0.1 (c) 0.01 (d) 1
  8. 8.What is the value of the digit 1 in 26.951? (a) 0.1 (b) 0.001 (c) 0.01 (d) 1
  9. 9.9.11 + 5.6 = ? (a) 14.81 (b) 14.71 (c) 14.61 (d) 9.67
  10. 10.9.05 + 2.9 = ? (a) 11.95 (b) 11.85 (c) 9.34 (d) 12.05
  11. 11.Which is the greatest: 0.5, 0.053, 0.432, 0.52? (a) 0.5 (b) 0.053 (c) 0.432 (d) 0.52
  12. 12.9.72 + 2.1 = ? (a) 11.72 (b) 11.82 (c) 9.93 (d) 11.92
  13. 13.What is the value of the digit 4 in 39.124? (a) 0.04 (b) 0.4 (c) 4 (d) 0.004
  14. 14.Which is the smallest: 0.086, 0.2, 0.123, 0.26? (a) 0.086 (b) 0.2 (c) 0.123 (d) 0.26
  15. 15.Which is the smallest: 0.078, 0.76, 0.7, 0.611? (a) 0.078 (b) 0.76 (c) 0.7 (d) 0.611
  16. 16.Which is the greatest: 0.072, 0.162, 0.24, 0.2? (a) 0.072 (b) 0.162 (c) 0.24 (d) 0.2
  17. 17.7.74 + 7.1 = ? (a) 8.45 (b) 14.94 (c) 14.84 (d) 14.74
  18. 18.What is the value of the digit 7 in 24.157? (a) 0.07 (b) 0.007 (c) 0.7 (d) 7
  19. 19.Which is the greatest: 0.523, 0.6, 0.67, 0.048? (a) 0.523 (b) 0.6 (c) 0.67 (d) 0.048
  20. 20.Which is the smallest: 0.048, 0.88, 0.8, 0.769? (a) 0.048 (b) 0.88 (c) 0.8 (d) 0.769
  21. 21.What is the value of the digit 3 in 32.597? (a) 3 (b) 30 (c) 0.03 (d) 0.3
  22. 22.What is the value of the digit 2 in 62.493? (a) 0.2 (b) 2 (c) 20 (d) 0.02
  23. 23.What is the value of the digit 2 in 47.329? (a) 0.02 (b) 0.2 (c) 2 (d) 0.002
  24. 24.What is the value of the digit 5 in 93.657? (a) 0.5 (b) 0.05 (c) 5 (d) 0.005
  25. 25.What is the value of the digit 7 in 23.678? (a) 7 (b) 0.007 (c) 0.07 (d) 0.7
  26. 26.7.04 + 4.1 = ? (a) 11.04 (b) 11.24 (c) 7.45 (d) 11.14
  27. 27.Which is the greatest: 0.89, 0.031, 0.753, 0.8? (a) 0.89 (b) 0.031 (c) 0.753 (d) 0.8
  28. 28.8.39 + 3.7 = ? (a) 12.19 (b) 12.09 (c) 11.99 (d) 8.76
  29. 29.9.92 + 7.1 = ? (a) 10.63 (b) 17.02 (c) 16.92 (d) 17.12
  30. 30.1.56 + 7.7 = ? (a) 2.33 (b) 9.36 (c) 9.16 (d) 9.26
  31. 31.9.31 + 8.3 = ? (a) 17.61 (b) 17.51 (c) 17.71 (d) 10.14
  32. 32.Which is the greatest: 0.016, 0.34, 0.295, 0.3? (a) 0.016 (b) 0.34 (c) 0.295 (d) 0.3
  33. 33.Which is the greatest: 0.282, 0.023, 0.39, 0.3? (a) 0.282 (b) 0.023 (c) 0.39 (d) 0.3
  34. 34.9.75 + 6.6 = ? (a) 10.41 (b) 16.35 (c) 16.45 (d) 16.25
  35. 35.What is the value of the digit 4 in 74.516? (a) 4 (b) 0.4 (c) 40 (d) 0.04
  36. 36.What is the value of the digit 8 in 81.329? (a) 0.8 (b) 80 (c) 8 (d) 0.08
  37. 37.What is the value of the digit 4 in 46.915? (a) 0.4 (b) 40 (c) 4 (d) 0.04
  38. 38.4.38 + 7.1 = ? (a) 5.09 (b) 11.48 (c) 11.58 (d) 11.38
  39. 39.What is the value of the digit 8 in 69.384? (a) 0.8 (b) 0.08 (c) 8 (d) 0.008
  40. 40.8.86 + 5.8 = ? (a) 14.56 (b) 9.44 (c) 14.76 (d) 14.66

Answer key

  1. 12.44
  2. 0.51
  3. 6.19
  4. 70
  5. 15.55
  6. 0.006
  7. 10
  8. 0.001
  9. 14.71
  10. 11.95
  11. 0.52
  12. 11.82
  13. 0.004
  14. 0.086
  15. 0.078
  16. 0.24
  17. 14.84
  18. 0.007
  19. 0.67
  20. 0.048
  21. 30
  22. 2
  23. 0.02
  24. 0.05
  25. 0.07
  26. 11.14
  27. 0.89
  28. 12.09
  29. 17.02
  30. 9.26
  31. 17.61
  32. 0.34
  33. 0.39
  34. 16.35
  35. 4
  36. 80
  37. 40
  38. 11.48
  39. 0.08
  40. 14.66

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