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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 715 · 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. 1.3.76 + 2.1 = ? (a) 5.86 (b) 3.97 (c) 5.76 (d) 5.96
  2. 2.Which is the smallest: 0.253, 0.057, 0.33, 0.3? (a) 0.253 (b) 0.057 (c) 0.33 (d) 0.3
  3. 3.What is the value of the digit 5 in 65.487? (a) 0.5 (b) 0.05 (c) 5 (d) 50
  4. 4.What is the value of the digit 9 in 64.593? (a) 9 (b) 0.009 (c) 0.09 (d) 0.9
  5. 5.2.45 + 9.7 = ? (a) 12.05 (b) 3.42 (c) 12.15 (d) 12.25
  6. 6.3.23 + 9.1 = ? (a) 12.33 (b) 4.14 (c) 12.23 (d) 12.43
  7. 7.6.01 + 5.9 = ? (a) 6.6 (b) 12.01 (c) 11.81 (d) 11.91
  8. 8.6.68 + 1.2 = ? (a) 7.88 (b) 7.98 (c) 7.78 (d) 6.8
  9. 9.What is the value of the digit 8 in 36.548? (a) 0.08 (b) 0.8 (c) 8 (d) 0.008
  10. 10.Which is the smallest: 0.532, 0.65, 0.041, 0.6? (a) 0.532 (b) 0.65 (c) 0.041 (d) 0.6
  11. 11.3.55 + 7.1 = ? (a) 4.26 (b) 10.75 (c) 10.55 (d) 10.65
  12. 12.5.77 + 1.6 = ? (a) 5.93 (b) 7.47 (c) 7.37 (d) 7.27
  13. 13.Which is the smallest: 0.024, 0.75, 0.699, 0.7? (a) 0.024 (b) 0.75 (c) 0.699 (d) 0.7
  14. 14.9.17 + 1.3 = ? (a) 9.3 (b) 10.57 (c) 10.37 (d) 10.47
  15. 15.Which is the greatest: 0.5, 0.027, 0.496, 0.56? (a) 0.5 (b) 0.027 (c) 0.496 (d) 0.56
  16. 16.1.16 + 8.1 = ? (a) 9.26 (b) 1.97 (c) 9.16 (d) 9.36
  17. 17.3.22 + 4.7 = ? (a) 7.92 (b) 3.69 (c) 8.02 (d) 7.82
  18. 18.5.97 + 8.1 = ? (a) 13.97 (b) 14.07 (c) 14.17 (d) 6.78
  19. 19.2.72 + 9.2 = ? (a) 3.64 (b) 11.82 (c) 11.92 (d) 12.02
  20. 20.8.97 + 9.5 = ? (a) 18.47 (b) 18.57 (c) 9.92 (d) 18.37
  21. 21.Which is the greatest: 0.2, 0.024, 0.143, 0.29? (a) 0.2 (b) 0.024 (c) 0.143 (d) 0.29
  22. 22.2.37 + 5.6 = ? (a) 7.87 (b) 8.07 (c) 2.93 (d) 7.97
  23. 23.Which is the smallest: 0.522, 0.69, 0.068, 0.6? (a) 0.522 (b) 0.69 (c) 0.068 (d) 0.6
  24. 24.What is the value of the digit 4 in 23.465? (a) 0.4 (b) 0.004 (c) 0.04 (d) 4
  25. 25.What is the value of the digit 2 in 24.981? (a) 20 (b) 0.02 (c) 0.2 (d) 2
  26. 26.9.94 + 4.7 = ? (a) 14.74 (b) 14.64 (c) 14.54 (d) 10.41
  27. 27.What is the value of the digit 8 in 98.253? (a) 0.08 (b) 8 (c) 80 (d) 0.8
  28. 28.9.21 + 8.2 = ? (a) 17.51 (b) 17.31 (c) 17.41 (d) 10.03
  29. 29.8.68 + 2.1 = ? (a) 10.78 (b) 10.68 (c) 8.89 (d) 10.88
  30. 30.1.44 + 2.2 = ? (a) 1.66 (b) 3.54 (c) 3.64 (d) 3.74
  31. 31.2.03 + 7.4 = ? (a) 9.43 (b) 9.33 (c) 9.53 (d) 2.77
  32. 32.Which is the greatest: 0.583, 0.6, 0.039, 0.61? (a) 0.583 (b) 0.6 (c) 0.039 (d) 0.61
  33. 33.7.31 + 4.7 = ? (a) 7.78 (b) 12.01 (c) 11.91 (d) 12.11
  34. 34.Which is the greatest: 0.79, 0.674, 0.7, 0.089? (a) 0.79 (b) 0.674 (c) 0.7 (d) 0.089
  35. 35.7.97 + 8.6 = ? (a) 8.83 (b) 16.47 (c) 16.67 (d) 16.57
  36. 36.What is the value of the digit 3 in 57.398? (a) 0.3 (b) 3 (c) 0.03 (d) 0.003
  37. 37.What is the value of the digit 7 in 32.764? (a) 0.07 (b) 0.7 (c) 7 (d) 0.007
  38. 38.What is the value of the digit 9 in 19.738? (a) 9 (b) 0.09 (c) 90 (d) 0.9
  39. 39.What is the value of the digit 4 in 49.237? (a) 40 (b) 4 (c) 0.04 (d) 0.4
  40. 40.What is the value of the digit 7 in 87.519? (a) 7 (b) 0.7 (c) 0.07 (d) 70

Answer key

  1. 5.86
  2. 0.057
  3. 5
  4. 0.09
  5. 12.15
  6. 12.33
  7. 11.91
  8. 7.88
  9. 0.008
  10. 0.041
  11. 10.65
  12. 7.37
  13. 0.024
  14. 10.47
  15. 0.56
  16. 9.26
  17. 7.92
  18. 14.07
  19. 11.92
  20. 18.47
  21. 0.29
  22. 7.97
  23. 0.068
  24. 0.4
  25. 20
  26. 14.64
  27. 8
  28. 17.41
  29. 10.78
  30. 3.64
  31. 9.43
  32. 0.61
  33. 12.01
  34. 0.79
  35. 16.57
  36. 0.3
  37. 0.7
  38. 9
  39. 40
  40. 7

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