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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 869 · 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. 1.2.06 + 3.3 = ? (a) 5.46 (b) 2.39 (c) 5.26 (d) 5.36
  2. 2.2.73 + 1.5 = ? (a) 4.13 (b) 4.23 (c) 2.88 (d) 4.33
  3. 3.Which is the greatest: 0.65, 0.593, 0.6, 0.017? (a) 0.65 (b) 0.593 (c) 0.6 (d) 0.017
  4. 4.Which is the smallest: 0.712, 0.026, 0.8, 0.82? (a) 0.712 (b) 0.026 (c) 0.8 (d) 0.82
  5. 5.2.44 + 5.3 = ? (a) 7.84 (b) 2.97 (c) 7.64 (d) 7.74
  6. 6.Which is the greatest: 0.059, 0.64, 0.598, 0.6? (a) 0.059 (b) 0.64 (c) 0.598 (d) 0.6
  7. 7.Which is the smallest: 0.048, 0.77, 0.629, 0.7? (a) 0.048 (b) 0.77 (c) 0.629 (d) 0.7
  8. 8.Which is the greatest: 0.5, 0.422, 0.58, 0.054? (a) 0.5 (b) 0.422 (c) 0.58 (d) 0.054
  9. 9.Which is the smallest: 0.486, 0.5, 0.52, 0.063? (a) 0.486 (b) 0.5 (c) 0.52 (d) 0.063
  10. 10.Which is the smallest: 0.091, 0.352, 0.42, 0.4? (a) 0.091 (b) 0.352 (c) 0.42 (d) 0.4
  11. 11.Which is the greatest: 0.047, 0.6, 0.67, 0.555? (a) 0.047 (b) 0.6 (c) 0.67 (d) 0.555
  12. 12.What is the value of the digit 3 in 69.123? (a) 0.3 (b) 0.03 (c) 0.003 (d) 3
  13. 13.Which is the greatest: 0.012, 0.289, 0.3, 0.35? (a) 0.012 (b) 0.289 (c) 0.3 (d) 0.35
  14. 14.5.37 + 5.2 = ? (a) 10.67 (b) 5.89 (c) 10.47 (d) 10.57
  15. 15.7.02 + 6.8 = ? (a) 7.7 (b) 13.72 (c) 13.92 (d) 13.82
  16. 16.What is the value of the digit 6 in 76.285? (a) 0.6 (b) 60 (c) 0.06 (d) 6
  17. 17.Which is the smallest: 0.58, 0.5, 0.471, 0.088? (a) 0.58 (b) 0.5 (c) 0.471 (d) 0.088
  18. 18.7.69 + 1.5 = ? (a) 9.29 (b) 9.09 (c) 9.19 (d) 7.84
  19. 19.Which is the smallest: 0.66, 0.047, 0.573, 0.6? (a) 0.66 (b) 0.047 (c) 0.573 (d) 0.6
  20. 20.Which is the smallest: 0.641, 0.051, 0.74, 0.7? (a) 0.641 (b) 0.051 (c) 0.74 (d) 0.7
  21. 21.Which is the greatest: 0.41, 0.4, 0.026, 0.339? (a) 0.41 (b) 0.4 (c) 0.026 (d) 0.339
  22. 22.Which is the greatest: 0.525, 0.65, 0.073, 0.6? (a) 0.525 (b) 0.65 (c) 0.073 (d) 0.6
  23. 23.Which is the greatest: 0.8, 0.023, 0.82, 0.745? (a) 0.8 (b) 0.023 (c) 0.82 (d) 0.745
  24. 24.2.31 + 6.6 = ? (a) 2.97 (b) 8.91 (c) 9.01 (d) 8.81
  25. 25.4.68 + 3.1 = ? (a) 7.88 (b) 7.68 (c) 4.99 (d) 7.78
  26. 26.What is the value of the digit 3 in 13.428? (a) 3 (b) 30 (c) 0.03 (d) 0.3
  27. 27.Which is the greatest: 0.013, 0.2, 0.115, 0.24? (a) 0.013 (b) 0.2 (c) 0.115 (d) 0.24
  28. 28.What is the value of the digit 5 in 71.825? (a) 0.5 (b) 5 (c) 0.005 (d) 0.05
  29. 29.Which is the greatest: 0.3, 0.231, 0.32, 0.037? (a) 0.3 (b) 0.231 (c) 0.32 (d) 0.037
  30. 30.1.78 + 7.1 = ? (a) 2.49 (b) 8.78 (c) 8.98 (d) 8.88
  31. 31.8.11 + 2.3 = ? (a) 10.51 (b) 10.41 (c) 8.34 (d) 10.31
  32. 32.What is the value of the digit 8 in 12.583? (a) 0.8 (b) 0.008 (c) 0.08 (d) 8
  33. 33.Which is the smallest: 0.027, 0.89, 0.8, 0.754? (a) 0.027 (b) 0.89 (c) 0.8 (d) 0.754
  34. 34.Which is the greatest: 0.381, 0.065, 0.4, 0.47? (a) 0.381 (b) 0.065 (c) 0.4 (d) 0.47
  35. 35.4.14 + 6.1 = ? (a) 10.14 (b) 10.34 (c) 10.24 (d) 4.75
  36. 36.5.41 + 8.1 = ? (a) 13.61 (b) 13.41 (c) 6.22 (d) 13.51
  37. 37.Which is the smallest: 0.046, 0.793, 0.8, 0.83? (a) 0.046 (b) 0.793 (c) 0.8 (d) 0.83
  38. 38.5.08 + 6.8 = ? (a) 11.88 (b) 11.78 (c) 11.98 (d) 5.76
  39. 39.4.55 + 3.1 = ? (a) 7.65 (b) 7.55 (c) 4.86 (d) 7.75
  40. 40.What is the value of the digit 5 in 32.584? (a) 5 (b) 0.05 (c) 0.005 (d) 0.5

Answer key

  1. 5.36
  2. 4.23
  3. 0.65
  4. 0.026
  5. 7.74
  6. 0.64
  7. 0.048
  8. 0.58
  9. 0.063
  10. 0.091
  11. 0.67
  12. 0.003
  13. 0.35
  14. 10.57
  15. 13.82
  16. 6
  17. 0.088
  18. 9.19
  19. 0.047
  20. 0.051
  21. 0.41
  22. 0.65
  23. 0.82
  24. 8.91
  25. 7.78
  26. 3
  27. 0.24
  28. 0.005
  29. 0.32
  30. 8.88
  31. 10.41
  32. 0.08
  33. 0.027
  34. 0.47
  35. 10.24
  36. 13.51
  37. 0.046
  38. 11.88
  39. 7.65
  40. 0.5

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