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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 548 · 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. 1.8.13 + 4.8 = ? (a) 12.93 (b) 12.83 (c) 13.03 (d) 8.61
  2. 2.9.51 + 2.9 = ? (a) 12.51 (b) 12.31 (c) 9.8 (d) 12.41
  3. 3.6.04 + 1.3 = ? (a) 7.24 (b) 7.34 (c) 6.17 (d) 7.44
  4. 4.Which is the smallest: 0.078, 0.8, 0.756, 0.81? (a) 0.078 (b) 0.8 (c) 0.756 (d) 0.81
  5. 5.4.94 + 2.4 = ? (a) 7.24 (b) 5.18 (c) 7.34 (d) 7.44
  6. 6.1.39 + 4.6 = ? (a) 5.89 (b) 6.09 (c) 1.85 (d) 5.99
  7. 7.4.53 + 9.8 = ? (a) 14.43 (b) 5.51 (c) 14.33 (d) 14.23
  8. 8.5.65 + 9.1 = ? (a) 14.75 (b) 14.85 (c) 14.65 (d) 6.56
  9. 9.What is the value of the digit 2 in 36.742? (a) 0.02 (b) 0.2 (c) 2 (d) 0.002
  10. 10.1.54 + 1.5 = ? (a) 2.94 (b) 3.14 (c) 3.04 (d) 1.69
  11. 11.1.39 + 2.1 = ? (a) 3.59 (b) 1.6 (c) 3.49 (d) 3.39
  12. 12.What is the value of the digit 9 in 94.568? (a) 90 (b) 0.9 (c) 9 (d) 0.09
  13. 13.5.51 + 1.9 = ? (a) 5.7 (b) 7.31 (c) 7.51 (d) 7.41
  14. 14.3.87 + 8.1 = ? (a) 4.68 (b) 12.07 (c) 11.87 (d) 11.97
  15. 15.What is the value of the digit 2 in 28.396? (a) 2 (b) 0.2 (c) 20 (d) 0.02
  16. 16.8.45 + 5.1 = ? (a) 8.96 (b) 13.55 (c) 13.45 (d) 13.65
  17. 17.3.69 + 8.8 = ? (a) 12.59 (b) 12.39 (c) 4.57 (d) 12.49
  18. 18.What is the value of the digit 4 in 61.274? (a) 0.04 (b) 0.4 (c) 4 (d) 0.004
  19. 19.What is the value of the digit 9 in 43.169? (a) 0.09 (b) 9 (c) 0.9 (d) 0.009
  20. 20.Which is the greatest: 0.045, 0.142, 0.21, 0.2? (a) 0.045 (b) 0.142 (c) 0.21 (d) 0.2
  21. 21.Which is the greatest: 0.712, 0.035, 0.82, 0.8? (a) 0.712 (b) 0.035 (c) 0.82 (d) 0.8
  22. 22.Which is the smallest: 0.6, 0.532, 0.042, 0.64? (a) 0.6 (b) 0.532 (c) 0.042 (d) 0.64
  23. 23.6.76 + 6.6 = ? (a) 7.42 (b) 13.36 (c) 13.26 (d) 13.46
  24. 24.Which is the smallest: 0.51, 0.5, 0.467, 0.092? (a) 0.51 (b) 0.5 (c) 0.467 (d) 0.092
  25. 25.What is the value of the digit 3 in 34.257? (a) 0.03 (b) 0.3 (c) 3 (d) 30
  26. 26.1.03 + 3.2 = ? (a) 4.33 (b) 1.35 (c) 4.13 (d) 4.23
  27. 27.Which is the greatest: 0.7, 0.72, 0.666, 0.059? (a) 0.7 (b) 0.72 (c) 0.666 (d) 0.059
  28. 28.What is the value of the digit 3 in 83.741? (a) 0.3 (b) 0.03 (c) 3 (d) 30
  29. 29.7.26 + 2.7 = ? (a) 10.06 (b) 9.86 (c) 9.96 (d) 7.53
  30. 30.What is the value of the digit 6 in 26.459? (a) 0.06 (b) 60 (c) 6 (d) 0.6
  31. 31.Which is the smallest: 0.022, 0.7, 0.684, 0.73? (a) 0.022 (b) 0.7 (c) 0.684 (d) 0.73
  32. 32.5.96 + 6.9 = ? (a) 6.65 (b) 12.76 (c) 12.96 (d) 12.86
  33. 33.Which is the greatest: 0.171, 0.2, 0.046, 0.29? (a) 0.171 (b) 0.2 (c) 0.046 (d) 0.29
  34. 34.2.36 + 4.5 = ? (a) 6.96 (b) 2.81 (c) 6.86 (d) 6.76
  35. 35.What is the value of the digit 5 in 87.635? (a) 5 (b) 0.5 (c) 0.005 (d) 0.05
  36. 36.What is the value of the digit 3 in 36.184? (a) 0.03 (b) 0.3 (c) 30 (d) 3
  37. 37.Which is the smallest: 0.4, 0.47, 0.374, 0.068? (a) 0.4 (b) 0.47 (c) 0.374 (d) 0.068
  38. 38.3.39 + 1.9 = ? (a) 3.58 (b) 5.39 (c) 5.29 (d) 5.19
  39. 39.Which is the smallest: 0.72, 0.671, 0.7, 0.015? (a) 0.72 (b) 0.671 (c) 0.7 (d) 0.015
  40. 40.1.22 + 5.9 = ? (a) 1.81 (b) 7.22 (c) 7.02 (d) 7.12

Answer key

  1. 12.93
  2. 12.41
  3. 7.34
  4. 0.078
  5. 7.34
  6. 5.99
  7. 14.33
  8. 14.75
  9. 0.002
  10. 3.04
  11. 3.49
  12. 90
  13. 7.41
  14. 11.97
  15. 20
  16. 13.55
  17. 12.49
  18. 0.004
  19. 0.009
  20. 0.21
  21. 0.82
  22. 0.042
  23. 13.36
  24. 0.092
  25. 30
  26. 4.23
  27. 0.72
  28. 3
  29. 9.96
  30. 6
  31. 0.022
  32. 12.86
  33. 0.29
  34. 6.86
  35. 0.005
  36. 30
  37. 0.068
  38. 5.29
  39. 0.015
  40. 7.12

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