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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 101 · 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.Which is the greatest: 0.019, 0.666, 0.7, 0.77? (a) 0.019 (b) 0.666 (c) 0.7 (d) 0.77
  2. 2.Which is the greatest: 0.3, 0.248, 0.31, 0.096? (a) 0.3 (b) 0.248 (c) 0.31 (d) 0.096
  3. 3.What is the value of the digit 1 in 13.254? (a) 0.01 (b) 0.1 (c) 10 (d) 1
  4. 4.4.61 + 9.2 = ? (a) 13.71 (b) 13.81 (c) 13.91 (d) 5.53
  5. 5.7.38 + 7.8 = ? (a) 15.28 (b) 8.16 (c) 15.08 (d) 15.18
  6. 6.Which is the smallest: 0.688, 0.78, 0.013, 0.7? (a) 0.688 (b) 0.78 (c) 0.013 (d) 0.7
  7. 7.Which is the greatest: 0.57, 0.5, 0.022, 0.415? (a) 0.57 (b) 0.5 (c) 0.022 (d) 0.415
  8. 8.Which is the smallest: 0.3, 0.39, 0.098, 0.227? (a) 0.3 (b) 0.39 (c) 0.098 (d) 0.227
  9. 9.Which is the smallest: 0.071, 0.328, 0.49, 0.4? (a) 0.071 (b) 0.328 (c) 0.49 (d) 0.4
  10. 10.What is the value of the digit 5 in 36.745? (a) 0.05 (b) 0.005 (c) 5 (d) 0.5
  11. 11.7.83 + 3.7 = ? (a) 8.2 (b) 11.63 (c) 11.53 (d) 11.43
  12. 12.What is the value of the digit 2 in 82.739? (a) 2 (b) 0.2 (c) 0.02 (d) 20
  13. 13.What is the value of the digit 3 in 31.759? (a) 30 (b) 3 (c) 0.3 (d) 0.03
  14. 14.What is the value of the digit 3 in 13.459? (a) 0.3 (b) 0.03 (c) 3 (d) 30
  15. 15.1.74 + 2.9 = ? (a) 2.03 (b) 4.74 (c) 4.64 (d) 4.54
  16. 16.Which is the smallest: 0.412, 0.022, 0.5, 0.58? (a) 0.412 (b) 0.022 (c) 0.5 (d) 0.58
  17. 17.What is the value of the digit 5 in 29.537? (a) 5 (b) 0.05 (c) 0.005 (d) 0.5
  18. 18.Which is the greatest: 0.071, 0.6, 0.536, 0.62? (a) 0.071 (b) 0.6 (c) 0.536 (d) 0.62
  19. 19.9.29 + 3.9 = ? (a) 13.29 (b) 9.68 (c) 13.19 (d) 13.09
  20. 20.What is the value of the digit 8 in 82.569? (a) 0.8 (b) 80 (c) 0.08 (d) 8
  21. 21.Which is the greatest: 0.5, 0.093, 0.53, 0.484? (a) 0.5 (b) 0.093 (c) 0.53 (d) 0.484
  22. 22.7.81 + 2.7 = ? (a) 8.08 (b) 10.61 (c) 10.51 (d) 10.41
  23. 23.7.21 + 2.2 = ? (a) 9.41 (b) 7.43 (c) 9.31 (d) 9.51
  24. 24.1.42 + 7.1 = ? (a) 8.62 (b) 8.42 (c) 8.52 (d) 2.13
  25. 25.What is the value of the digit 8 in 82.561? (a) 8 (b) 0.08 (c) 0.8 (d) 80
  26. 26.Which is the greatest: 0.268, 0.36, 0.072, 0.3? (a) 0.268 (b) 0.36 (c) 0.072 (d) 0.3
  27. 27.Which is the smallest: 0.7, 0.647, 0.066, 0.74? (a) 0.7 (b) 0.647 (c) 0.066 (d) 0.74
  28. 28.Which is the smallest: 0.3, 0.247, 0.31, 0.078? (a) 0.3 (b) 0.247 (c) 0.31 (d) 0.078
  29. 29.Which is the greatest: 0.88, 0.067, 0.748, 0.8? (a) 0.88 (b) 0.067 (c) 0.748 (d) 0.8
  30. 30.Which is the greatest: 0.092, 0.331, 0.4, 0.42? (a) 0.092 (b) 0.331 (c) 0.4 (d) 0.42
  31. 31.Which is the smallest: 0.2, 0.128, 0.21, 0.031? (a) 0.2 (b) 0.128 (c) 0.21 (d) 0.031
  32. 32.7.75 + 8.3 = ? (a) 8.58 (b) 16.15 (c) 15.95 (d) 16.05
  33. 33.2.88 + 9.8 = ? (a) 12.58 (b) 12.78 (c) 12.68 (d) 3.86
  34. 34.3.76 + 8.8 = ? (a) 12.46 (b) 12.66 (c) 4.64 (d) 12.56
  35. 35.3.43 + 6.9 = ? (a) 4.12 (b) 10.43 (c) 10.23 (d) 10.33
  36. 36.8.04 + 2.3 = ? (a) 10.34 (b) 10.44 (c) 10.24 (d) 8.27
  37. 37.What is the value of the digit 1 in 27.138? (a) 0.001 (b) 0.01 (c) 1 (d) 0.1
  38. 38.Which is the smallest: 0.023, 0.6, 0.61, 0.531? (a) 0.023 (b) 0.6 (c) 0.61 (d) 0.531
  39. 39.What is the value of the digit 2 in 12.753? (a) 20 (b) 2 (c) 0.02 (d) 0.2
  40. 40.8.76 + 4.4 = ? (a) 9.2 (b) 13.26 (c) 13.16 (d) 13.06

Answer key

  1. 0.77
  2. 0.31
  3. 10
  4. 13.81
  5. 15.18
  6. 0.013
  7. 0.57
  8. 0.098
  9. 0.071
  10. 0.005
  11. 11.53
  12. 2
  13. 30
  14. 3
  15. 4.64
  16. 0.022
  17. 0.5
  18. 0.62
  19. 13.19
  20. 80
  21. 0.53
  22. 10.51
  23. 9.41
  24. 8.52
  25. 80
  26. 0.36
  27. 0.066
  28. 0.078
  29. 0.88
  30. 0.42
  31. 0.031
  32. 16.05
  33. 12.68
  34. 12.56
  35. 10.33
  36. 10.34
  37. 0.1
  38. 0.023
  39. 2
  40. 13.16

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