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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 660 · 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. 1.6.52 + 7.4 = ? (a) 13.92 (b) 7.26 (c) 13.82 (d) 14.02
  2. 2.What is the value of the digit 5 in 78.521? (a) 0.05 (b) 0.5 (c) 0.005 (d) 5
  3. 3.Which is the greatest: 0.713, 0.86, 0.014, 0.8? (a) 0.713 (b) 0.86 (c) 0.014 (d) 0.8
  4. 4.6.11 + 1.1 = ? (a) 6.22 (b) 7.31 (c) 7.21 (d) 7.11
  5. 5.8.31 + 4.3 = ? (a) 12.71 (b) 12.61 (c) 8.74 (d) 12.51
  6. 6.9.88 + 4.2 = ? (a) 14.18 (b) 13.98 (c) 14.08 (d) 10.3
  7. 7.2.49 + 4.7 = ? (a) 7.09 (b) 2.96 (c) 7.19 (d) 7.29
  8. 8.What is the value of the digit 3 in 37.681? (a) 0.03 (b) 0.3 (c) 3 (d) 30
  9. 9.8.27 + 7.3 = ? (a) 15.67 (b) 15.57 (c) 15.47 (d) 9
  10. 10.7.92 + 2.8 = ? (a) 10.82 (b) 10.72 (c) 8.2 (d) 10.62
  11. 11.What is the value of the digit 6 in 54.693? (a) 0.006 (b) 6 (c) 0.6 (d) 0.06
  12. 12.Which is the greatest: 0.4, 0.025, 0.45, 0.323? (a) 0.4 (b) 0.025 (c) 0.45 (d) 0.323
  13. 13.What is the value of the digit 8 in 85.729? (a) 8 (b) 0.8 (c) 80 (d) 0.08
  14. 14.4.88 + 9.4 = ? (a) 14.38 (b) 5.82 (c) 14.18 (d) 14.28
  15. 15.Which is the smallest: 0.272, 0.037, 0.3, 0.38? (a) 0.272 (b) 0.037 (c) 0.3 (d) 0.38
  16. 16.Which is the greatest: 0.036, 0.88, 0.719, 0.8? (a) 0.036 (b) 0.88 (c) 0.719 (d) 0.8
  17. 17.6.95 + 1.3 = ? (a) 7.08 (b) 8.35 (c) 8.15 (d) 8.25
  18. 18.Which is the greatest: 0.45, 0.023, 0.4, 0.392? (a) 0.45 (b) 0.023 (c) 0.4 (d) 0.392
  19. 19.Which is the greatest: 0.2, 0.22, 0.175, 0.012? (a) 0.2 (b) 0.22 (c) 0.175 (d) 0.012
  20. 20.4.73 + 1.5 = ? (a) 6.23 (b) 6.13 (c) 6.33 (d) 4.88
  21. 21.What is the value of the digit 1 in 41.329? (a) 10 (b) 0.1 (c) 0.01 (d) 1
  22. 22.What is the value of the digit 4 in 24.357? (a) 40 (b) 4 (c) 0.4 (d) 0.04
  23. 23.Which is the smallest: 0.5, 0.045, 0.438, 0.51? (a) 0.5 (b) 0.045 (c) 0.438 (d) 0.51
  24. 24.What is the value of the digit 3 in 41.328? (a) 0.03 (b) 3 (c) 0.3 (d) 0.003
  25. 25.Which is the smallest: 0.092, 0.8, 0.89, 0.755? (a) 0.092 (b) 0.8 (c) 0.89 (d) 0.755
  26. 26.What is the value of the digit 1 in 97.186? (a) 1 (b) 0.001 (c) 0.01 (d) 0.1
  27. 27.Which is the greatest: 0.3, 0.257, 0.32, 0.078? (a) 0.3 (b) 0.257 (c) 0.32 (d) 0.078
  28. 28.1.65 + 7.6 = ? (a) 9.15 (b) 9.25 (c) 9.35 (d) 2.41
  29. 29.Which is the greatest: 0.318, 0.4, 0.45, 0.055? (a) 0.318 (b) 0.4 (c) 0.45 (d) 0.055
  30. 30.Which is the greatest: 0.532, 0.083, 0.64, 0.6? (a) 0.532 (b) 0.083 (c) 0.64 (d) 0.6
  31. 31.6.03 + 9.6 = ? (a) 6.99 (b) 15.73 (c) 15.63 (d) 15.53
  32. 32.6.14 + 4.1 = ? (a) 10.14 (b) 10.34 (c) 6.55 (d) 10.24
  33. 33.Which is the smallest: 0.093, 0.2, 0.24, 0.159? (a) 0.093 (b) 0.2 (c) 0.24 (d) 0.159
  34. 34.1.62 + 5.1 = ? (a) 6.72 (b) 2.13 (c) 6.82 (d) 6.62
  35. 35.Which is the greatest: 0.468, 0.5, 0.55, 0.049? (a) 0.468 (b) 0.5 (c) 0.55 (d) 0.049
  36. 36.Which is the greatest: 0.773, 0.83, 0.018, 0.8? (a) 0.773 (b) 0.83 (c) 0.018 (d) 0.8
  37. 37.Which is the smallest: 0.73, 0.044, 0.618, 0.7? (a) 0.73 (b) 0.044 (c) 0.618 (d) 0.7
  38. 38.What is the value of the digit 3 in 62.357? (a) 0.003 (b) 0.03 (c) 0.3 (d) 3
  39. 39.What is the value of the digit 1 in 59.813? (a) 0.001 (b) 0.1 (c) 0.01 (d) 1
  40. 40.What is the value of the digit 3 in 93.768? (a) 0.03 (b) 30 (c) 3 (d) 0.3

Answer key

  1. 13.92
  2. 0.5
  3. 0.86
  4. 7.21
  5. 12.61
  6. 14.08
  7. 7.19
  8. 30
  9. 15.57
  10. 10.72
  11. 0.6
  12. 0.45
  13. 80
  14. 14.28
  15. 0.037
  16. 0.88
  17. 8.25
  18. 0.45
  19. 0.22
  20. 6.23
  21. 1
  22. 4
  23. 0.045
  24. 0.3
  25. 0.092
  26. 0.1
  27. 0.32
  28. 9.25
  29. 0.45
  30. 0.64
  31. 15.63
  32. 10.24
  33. 0.093
  34. 6.72
  35. 0.55
  36. 0.83
  37. 0.044
  38. 0.3
  39. 0.01
  40. 3

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