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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 323 · 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.What is the value of the digit 7 in 73.268? (a) 70 (b) 0.07 (c) 7 (d) 0.7
  2. 2.9.75 + 7.1 = ? (a) 16.85 (b) 10.46 (c) 16.95 (d) 16.75
  3. 3.What is the value of the digit 9 in 83.129? (a) 9 (b) 0.009 (c) 0.9 (d) 0.09
  4. 4.What is the value of the digit 9 in 59.764? (a) 90 (b) 0.09 (c) 9 (d) 0.9
  5. 5.2.33 + 1.3 = ? (a) 3.73 (b) 3.53 (c) 3.63 (d) 2.46
  6. 6.What is the value of the digit 4 in 43.276? (a) 0.4 (b) 4 (c) 40 (d) 0.04
  7. 7.Which is the greatest: 0.014, 0.6, 0.593, 0.63? (a) 0.014 (b) 0.6 (c) 0.593 (d) 0.63
  8. 8.Which is the smallest: 0.025, 0.778, 0.8, 0.84? (a) 0.025 (b) 0.778 (c) 0.8 (d) 0.84
  9. 9.9.68 + 9.1 = ? (a) 18.88 (b) 18.78 (c) 10.59 (d) 18.68
  10. 10.9.18 + 1.4 = ? (a) 10.48 (b) 10.68 (c) 10.58 (d) 9.32
  11. 11.What is the value of the digit 7 in 85.742? (a) 0.07 (b) 7 (c) 0.007 (d) 0.7
  12. 12.Which is the greatest: 0.6, 0.036, 0.537, 0.64? (a) 0.6 (b) 0.036 (c) 0.537 (d) 0.64
  13. 13.Which is the greatest: 0.032, 0.27, 0.172, 0.2? (a) 0.032 (b) 0.27 (c) 0.172 (d) 0.2
  14. 14.What is the value of the digit 3 in 37.218? (a) 0.03 (b) 30 (c) 3 (d) 0.3
  15. 15.Which is the smallest: 0.073, 0.143, 0.26, 0.2? (a) 0.073 (b) 0.143 (c) 0.26 (d) 0.2
  16. 16.What is the value of the digit 9 in 41.396? (a) 0.09 (b) 0.009 (c) 9 (d) 0.9
  17. 17.6.41 + 6.8 = ? (a) 13.11 (b) 7.09 (c) 13.21 (d) 13.31
  18. 18.What is the value of the digit 8 in 42.835? (a) 0.008 (b) 0.08 (c) 8 (d) 0.8
  19. 19.2.77 + 3.8 = ? (a) 6.47 (b) 6.57 (c) 3.15 (d) 6.67
  20. 20.2.21 + 2.2 = ? (a) 4.51 (b) 4.41 (c) 4.31 (d) 2.43
  21. 21.What is the value of the digit 9 in 59.618? (a) 0.9 (b) 90 (c) 0.09 (d) 9
  22. 22.What is the value of the digit 3 in 78.536? (a) 0.003 (b) 3 (c) 0.3 (d) 0.03
  23. 23.What is the value of the digit 7 in 19.732? (a) 0.07 (b) 0.7 (c) 7 (d) 0.007
  24. 24.3.16 + 6.4 = ? (a) 9.46 (b) 9.66 (c) 3.8 (d) 9.56
  25. 25.Which is the greatest: 0.612, 0.76, 0.7, 0.049? (a) 0.612 (b) 0.76 (c) 0.7 (d) 0.049
  26. 26.6.82 + 5.8 = ? (a) 12.72 (b) 12.52 (c) 7.4 (d) 12.62
  27. 27.7.94 + 1.2 = ? (a) 9.04 (b) 9.24 (c) 8.06 (d) 9.14
  28. 28.2.11 + 9.6 = ? (a) 11.81 (b) 11.61 (c) 3.07 (d) 11.71
  29. 29.5.81 + 8.8 = ? (a) 14.61 (b) 6.69 (c) 14.71 (d) 14.51
  30. 30.9.15 + 3.7 = ? (a) 12.85 (b) 9.52 (c) 12.75 (d) 12.95
  31. 31.6.71 + 2.9 = ? (a) 7 (b) 9.71 (c) 9.51 (d) 9.61
  32. 32.5.01 + 4.9 = ? (a) 5.5 (b) 9.81 (c) 10.01 (d) 9.91
  33. 33.Which is the greatest: 0.6, 0.019, 0.526, 0.67? (a) 0.6 (b) 0.019 (c) 0.526 (d) 0.67
  34. 34.2.84 + 9.9 = ? (a) 3.83 (b) 12.64 (c) 12.74 (d) 12.84
  35. 35.What is the value of the digit 6 in 26.394? (a) 0.6 (b) 60 (c) 0.06 (d) 6
  36. 36.3.19 + 1.2 = ? (a) 4.29 (b) 4.39 (c) 3.31 (d) 4.49
  37. 37.Which is the smallest: 0.286, 0.37, 0.3, 0.017? (a) 0.286 (b) 0.37 (c) 0.3 (d) 0.017
  38. 38.Which is the smallest: 0.54, 0.051, 0.5, 0.415? (a) 0.54 (b) 0.051 (c) 0.5 (d) 0.415
  39. 39.Which is the smallest: 0.586, 0.6, 0.035, 0.64? (a) 0.586 (b) 0.6 (c) 0.035 (d) 0.64
  40. 40.1.85 + 1.9 = ? (a) 3.85 (b) 2.04 (c) 3.65 (d) 3.75

Answer key

  1. 70
  2. 16.85
  3. 0.009
  4. 9
  5. 3.63
  6. 40
  7. 0.63
  8. 0.025
  9. 18.78
  10. 10.58
  11. 0.7
  12. 0.64
  13. 0.27
  14. 30
  15. 0.073
  16. 0.09
  17. 13.21
  18. 0.8
  19. 6.57
  20. 4.41
  21. 9
  22. 0.03
  23. 0.7
  24. 9.56
  25. 0.76
  26. 12.62
  27. 9.14
  28. 11.71
  29. 14.61
  30. 12.85
  31. 9.61
  32. 9.91
  33. 0.67
  34. 12.74
  35. 6
  36. 4.39
  37. 0.017
  38. 0.051
  39. 0.035
  40. 3.75

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