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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 686 · 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. 1.8.76 + 7.6 = ? (a) 16.26 (b) 16.46 (c) 16.36 (d) 9.52
  2. 2.What is the value of the digit 6 in 29.846? (a) 6 (b) 0.006 (c) 0.06 (d) 0.6
  3. 3.3.29 + 2.1 = ? (a) 5.29 (b) 5.39 (c) 3.5 (d) 5.49
  4. 4.Which is the smallest: 0.459, 0.51, 0.5, 0.077? (a) 0.459 (b) 0.51 (c) 0.5 (d) 0.077
  5. 5.What is the value of the digit 2 in 92.538? (a) 0.02 (b) 0.2 (c) 2 (d) 20
  6. 6.5.75 + 1.5 = ? (a) 5.9 (b) 7.15 (c) 7.25 (d) 7.35
  7. 7.7.78 + 7.6 = ? (a) 8.54 (b) 15.38 (c) 15.28 (d) 15.48
  8. 8.Which is the smallest: 0.25, 0.2, 0.054, 0.156? (a) 0.25 (b) 0.2 (c) 0.054 (d) 0.156
  9. 9.What is the value of the digit 2 in 32.685? (a) 0.02 (b) 0.2 (c) 20 (d) 2
  10. 10.What is the value of the digit 7 in 93.768? (a) 7 (b) 0.07 (c) 0.7 (d) 0.007
  11. 11.5.07 + 5.1 = ? (a) 10.17 (b) 10.07 (c) 5.58 (d) 10.27
  12. 12.What is the value of the digit 5 in 52.931? (a) 5 (b) 50 (c) 0.05 (d) 0.5
  13. 13.What is the value of the digit 8 in 17.894? (a) 8 (b) 0.008 (c) 0.08 (d) 0.8
  14. 14.3.96 + 2.4 = ? (a) 6.46 (b) 6.26 (c) 6.36 (d) 4.2
  15. 15.What is the value of the digit 8 in 16.879? (a) 8 (b) 0.08 (c) 0.8 (d) 0.008
  16. 16.Which is the smallest: 0.35, 0.3, 0.213, 0.048? (a) 0.35 (b) 0.3 (c) 0.213 (d) 0.048
  17. 17.2.51 + 4.6 = ? (a) 7.01 (b) 7.11 (c) 7.21 (d) 2.97
  18. 18.Which is the smallest: 0.635, 0.027, 0.77, 0.7? (a) 0.635 (b) 0.027 (c) 0.77 (d) 0.7
  19. 19.Which is the greatest: 0.86, 0.8, 0.029, 0.711? (a) 0.86 (b) 0.8 (c) 0.029 (d) 0.711
  20. 20.What is the value of the digit 4 in 28.574? (a) 0.4 (b) 0.004 (c) 4 (d) 0.04
  21. 21.3.22 + 5.2 = ? (a) 3.74 (b) 8.42 (c) 8.32 (d) 8.52
  22. 22.6.05 + 7.9 = ? (a) 6.84 (b) 14.05 (c) 13.85 (d) 13.95
  23. 23.7.91 + 8.8 = ? (a) 16.81 (b) 8.79 (c) 16.71 (d) 16.61
  24. 24.What is the value of the digit 9 in 94.163? (a) 0.9 (b) 0.09 (c) 9 (d) 90
  25. 25.Which is the greatest: 0.6, 0.61, 0.078, 0.548? (a) 0.6 (b) 0.61 (c) 0.078 (d) 0.548
  26. 26.7.43 + 4.1 = ? (a) 11.43 (b) 7.84 (c) 11.63 (d) 11.53
  27. 27.Which is the smallest: 0.25, 0.2, 0.129, 0.052? (a) 0.25 (b) 0.2 (c) 0.129 (d) 0.052
  28. 28.8.01 + 2.4 = ? (a) 8.25 (b) 10.51 (c) 10.41 (d) 10.31
  29. 29.What is the value of the digit 1 in 92.761? (a) 1 (b) 0.001 (c) 0.1 (d) 0.01
  30. 30.1.32 + 8.5 = ? (a) 9.72 (b) 9.92 (c) 2.17 (d) 9.82
  31. 31.3.53 + 8.4 = ? (a) 11.83 (b) 11.93 (c) 4.37 (d) 12.03
  32. 32.5.13 + 1.4 = ? (a) 6.43 (b) 6.63 (c) 6.53 (d) 5.27
  33. 33.Which is the smallest: 0.33, 0.251, 0.3, 0.079? (a) 0.33 (b) 0.251 (c) 0.3 (d) 0.079
  34. 34.What is the value of the digit 6 in 64.829? (a) 6 (b) 0.6 (c) 60 (d) 0.06
  35. 35.Which is the smallest: 0.39, 0.283, 0.019, 0.3? (a) 0.39 (b) 0.283 (c) 0.019 (d) 0.3
  36. 36.What is the value of the digit 7 in 32.657? (a) 0.7 (b) 7 (c) 0.07 (d) 0.007
  37. 37.What is the value of the digit 8 in 81.329? (a) 0.8 (b) 0.08 (c) 80 (d) 8
  38. 38.Which is the greatest: 0.541, 0.62, 0.041, 0.6? (a) 0.541 (b) 0.62 (c) 0.041 (d) 0.6
  39. 39.Which is the smallest: 0.024, 0.3, 0.283, 0.31? (a) 0.024 (b) 0.3 (c) 0.283 (d) 0.31
  40. 40.What is the value of the digit 2 in 21.593? (a) 0.2 (b) 20 (c) 0.02 (d) 2

Answer key

  1. 16.36
  2. 0.006
  3. 5.39
  4. 0.077
  5. 2
  6. 7.25
  7. 15.38
  8. 0.054
  9. 2
  10. 0.7
  11. 10.17
  12. 50
  13. 0.8
  14. 6.36
  15. 0.8
  16. 0.048
  17. 7.11
  18. 0.027
  19. 0.86
  20. 0.004
  21. 8.42
  22. 13.95
  23. 16.71
  24. 90
  25. 0.61
  26. 11.53
  27. 0.052
  28. 10.41
  29. 0.001
  30. 9.82
  31. 11.93
  32. 6.53
  33. 0.079
  34. 60
  35. 0.019
  36. 0.007
  37. 80
  38. 0.62
  39. 0.024
  40. 20

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