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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 744 · 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. 1.8.52 + 4.2 = ? (a) 12.72 (b) 12.62 (c) 8.94 (d) 12.82
  2. 2.What is the value of the digit 4 in 32.784? (a) 0.04 (b) 4 (c) 0.004 (d) 0.4
  3. 3.Which is the smallest: 0.072, 0.38, 0.293, 0.3? (a) 0.072 (b) 0.38 (c) 0.293 (d) 0.3
  4. 4.Which is the smallest: 0.632, 0.042, 0.7, 0.77? (a) 0.632 (b) 0.042 (c) 0.7 (d) 0.77
  5. 5.4.24 + 3.1 = ? (a) 7.24 (b) 7.44 (c) 4.55 (d) 7.34
  6. 6.What is the value of the digit 1 in 81.462? (a) 0.1 (b) 1 (c) 10 (d) 0.01
  7. 7.8.27 + 1.6 = ? (a) 9.77 (b) 8.43 (c) 9.87 (d) 9.97
  8. 8.4.99 + 4.3 = ? (a) 9.29 (b) 9.39 (c) 5.42 (d) 9.19
  9. 9.Which is the smallest: 0.528, 0.034, 0.6, 0.66? (a) 0.528 (b) 0.034 (c) 0.6 (d) 0.66
  10. 10.Which is the greatest: 0.4, 0.399, 0.014, 0.42? (a) 0.4 (b) 0.399 (c) 0.014 (d) 0.42
  11. 11.What is the value of the digit 7 in 74.653? (a) 0.07 (b) 70 (c) 0.7 (d) 7
  12. 12.7.01 + 1.2 = ? (a) 7.13 (b) 8.31 (c) 8.21 (d) 8.11
  13. 13.Which is the greatest: 0.586, 0.65, 0.018, 0.6? (a) 0.586 (b) 0.65 (c) 0.018 (d) 0.6
  14. 14.8.89 + 2.3 = ? (a) 11.29 (b) 11.19 (c) 9.12 (d) 11.09
  15. 15.What is the value of the digit 2 in 29.164? (a) 20 (b) 2 (c) 0.02 (d) 0.2
  16. 16.Which is the greatest: 0.224, 0.33, 0.071, 0.3? (a) 0.224 (b) 0.33 (c) 0.071 (d) 0.3
  17. 17.Which is the smallest: 0.756, 0.067, 0.8, 0.83? (a) 0.756 (b) 0.067 (c) 0.8 (d) 0.83
  18. 18.Which is the greatest: 0.42, 0.335, 0.4, 0.052? (a) 0.42 (b) 0.335 (c) 0.4 (d) 0.052
  19. 19.What is the value of the digit 5 in 21.598? (a) 0.5 (b) 0.005 (c) 0.05 (d) 5
  20. 20.Which is the greatest: 0.661, 0.019, 0.7, 0.73? (a) 0.661 (b) 0.019 (c) 0.7 (d) 0.73
  21. 21.3.42 + 4.7 = ? (a) 8.22 (b) 8.02 (c) 8.12 (d) 3.89
  22. 22.3.55 + 4.4 = ? (a) 7.85 (b) 3.99 (c) 8.05 (d) 7.95
  23. 23.What is the value of the digit 3 in 37.415? (a) 3 (b) 30 (c) 0.03 (d) 0.3
  24. 24.2.73 + 9.7 = ? (a) 12.43 (b) 12.33 (c) 3.7 (d) 12.53
  25. 25.5.31 + 4.4 = ? (a) 5.75 (b) 9.61 (c) 9.81 (d) 9.71
  26. 26.5.07 + 5.4 = ? (a) 10.57 (b) 5.61 (c) 10.37 (d) 10.47
  27. 27.7.01 + 2.3 = ? (a) 7.24 (b) 9.21 (c) 9.31 (d) 9.41
  28. 28.What is the value of the digit 7 in 51.287? (a) 0.007 (b) 0.7 (c) 7 (d) 0.07
  29. 29.Which is the greatest: 0.86, 0.8, 0.732, 0.064? (a) 0.86 (b) 0.8 (c) 0.732 (d) 0.064
  30. 30.What is the value of the digit 5 in 15.832? (a) 0.5 (b) 0.05 (c) 5 (d) 50
  31. 31.What is the value of the digit 6 in 46.812? (a) 0.06 (b) 6 (c) 60 (d) 0.6
  32. 32.What is the value of the digit 6 in 74.862? (a) 0.006 (b) 0.6 (c) 0.06 (d) 6
  33. 33.What is the value of the digit 5 in 95.138? (a) 50 (b) 0.05 (c) 5 (d) 0.5
  34. 34.What is the value of the digit 5 in 52.316? (a) 5 (b) 0.05 (c) 0.5 (d) 50
  35. 35.Which is the smallest: 0.053, 0.69, 0.6, 0.568? (a) 0.053 (b) 0.69 (c) 0.6 (d) 0.568
  36. 36.What is the value of the digit 1 in 71.549? (a) 0.01 (b) 1 (c) 10 (d) 0.1
  37. 37.3.88 + 6.4 = ? (a) 10.28 (b) 10.18 (c) 4.52 (d) 10.38
  38. 38.8.66 + 5.2 = ? (a) 13.96 (b) 9.18 (c) 13.76 (d) 13.86
  39. 39.What is the value of the digit 7 in 25.794? (a) 0.7 (b) 0.007 (c) 0.07 (d) 7
  40. 40.What is the value of the digit 9 in 45.219? (a) 9 (b) 0.9 (c) 0.09 (d) 0.009

Answer key

  1. 12.72
  2. 0.004
  3. 0.072
  4. 0.042
  5. 7.34
  6. 1
  7. 9.87
  8. 9.29
  9. 0.034
  10. 0.42
  11. 70
  12. 8.21
  13. 0.65
  14. 11.19
  15. 20
  16. 0.33
  17. 0.067
  18. 0.42
  19. 0.5
  20. 0.73
  21. 8.12
  22. 7.95
  23. 30
  24. 12.43
  25. 9.71
  26. 10.47
  27. 9.31
  28. 0.007
  29. 0.86
  30. 5
  31. 6
  32. 0.06
  33. 5
  34. 50
  35. 0.053
  36. 1
  37. 10.28
  38. 13.86
  39. 0.7
  40. 0.009

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