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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 42 · 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. 1.1.18 + 7.2 = ? (a) 8.28 (b) 1.9 (c) 8.38 (d) 8.48
  2. 2.Which is the greatest: 0.044, 0.322, 0.49, 0.4? (a) 0.044 (b) 0.322 (c) 0.49 (d) 0.4
  3. 3.Which is the greatest: 0.6, 0.056, 0.534, 0.64? (a) 0.6 (b) 0.056 (c) 0.534 (d) 0.64
  4. 4.What is the value of the digit 4 in 45.687? (a) 0.04 (b) 0.4 (c) 40 (d) 4
  5. 5.1.22 + 7.3 = ? (a) 8.62 (b) 1.95 (c) 8.42 (d) 8.52
  6. 6.5.46 + 6.2 = ? (a) 11.56 (b) 11.66 (c) 6.08 (d) 11.76
  7. 7.What is the value of the digit 5 in 59.367? (a) 0.5 (b) 5 (c) 0.05 (d) 50
  8. 8.2.01 + 7.3 = ? (a) 9.21 (b) 2.74 (c) 9.41 (d) 9.31
  9. 9.5.02 + 9.3 = ? (a) 14.22 (b) 14.42 (c) 14.32 (d) 5.95
  10. 10.1.59 + 9.5 = ? (a) 11.19 (b) 2.54 (c) 11.09 (d) 10.99
  11. 11.Which is the greatest: 0.73, 0.061, 0.7, 0.644? (a) 0.73 (b) 0.061 (c) 0.7 (d) 0.644
  12. 12.9.05 + 5.8 = ? (a) 14.95 (b) 14.85 (c) 14.75 (d) 9.63
  13. 13.2.73 + 2.7 = ? (a) 5.53 (b) 5.33 (c) 3 (d) 5.43
  14. 14.What is the value of the digit 3 in 97.234? (a) 0.003 (b) 3 (c) 0.3 (d) 0.03
  15. 15.Which is the smallest: 0.063, 0.787, 0.8, 0.89? (a) 0.063 (b) 0.787 (c) 0.8 (d) 0.89
  16. 16.3.56 + 6.9 = ? (a) 10.56 (b) 4.25 (c) 10.46 (d) 10.36
  17. 17.5.18 + 8.6 = ? (a) 13.88 (b) 6.04 (c) 13.68 (d) 13.78
  18. 18.What is the value of the digit 5 in 38.259? (a) 0.005 (b) 5 (c) 0.5 (d) 0.05
  19. 19.7.94 + 2.1 = ? (a) 9.94 (b) 8.15 (c) 10.04 (d) 10.14
  20. 20.Which is the smallest: 0.25, 0.132, 0.2, 0.068? (a) 0.25 (b) 0.132 (c) 0.2 (d) 0.068
  21. 21.4.04 + 8.5 = ? (a) 4.89 (b) 12.64 (c) 12.54 (d) 12.44
  22. 22.What is the value of the digit 3 in 34.268? (a) 0.03 (b) 3 (c) 30 (d) 0.3
  23. 23.4.24 + 2.5 = ? (a) 6.64 (b) 6.74 (c) 4.49 (d) 6.84
  24. 24.What is the value of the digit 3 in 82.635? (a) 0.03 (b) 0.3 (c) 0.003 (d) 3
  25. 25.8.68 + 6.1 = ? (a) 14.68 (b) 14.88 (c) 9.29 (d) 14.78
  26. 26.8.68 + 1.4 = ? (a) 10.18 (b) 9.98 (c) 8.82 (d) 10.08
  27. 27.What is the value of the digit 8 in 81.326? (a) 0.08 (b) 8 (c) 0.8 (d) 80
  28. 28.What is the value of the digit 6 in 31.546? (a) 0.006 (b) 6 (c) 0.6 (d) 0.06
  29. 29.Which is the smallest: 0.261, 0.093, 0.32, 0.3? (a) 0.261 (b) 0.093 (c) 0.32 (d) 0.3
  30. 30.What is the value of the digit 1 in 29.317? (a) 0.01 (b) 0.001 (c) 1 (d) 0.1
  31. 31.6.28 + 8.6 = ? (a) 14.78 (b) 7.14 (c) 14.98 (d) 14.88
  32. 32.Which is the smallest: 0.125, 0.23, 0.2, 0.028? (a) 0.125 (b) 0.23 (c) 0.2 (d) 0.028
  33. 33.Which is the smallest: 0.6, 0.061, 0.555, 0.65? (a) 0.6 (b) 0.061 (c) 0.555 (d) 0.65
  34. 34.What is the value of the digit 8 in 18.596? (a) 0.08 (b) 0.8 (c) 80 (d) 8
  35. 35.Which is the smallest: 0.066, 0.73, 0.7, 0.695? (a) 0.066 (b) 0.73 (c) 0.7 (d) 0.695
  36. 36.What is the value of the digit 1 in 82.154? (a) 0.01 (b) 0.001 (c) 1 (d) 0.1
  37. 37.Which is the smallest: 0.61, 0.079, 0.544, 0.6? (a) 0.61 (b) 0.079 (c) 0.544 (d) 0.6
  38. 38.What is the value of the digit 4 in 13.654? (a) 0.004 (b) 0.4 (c) 4 (d) 0.04
  39. 39.What is the value of the digit 7 in 67.138? (a) 0.07 (b) 0.7 (c) 70 (d) 7
  40. 40.4.53 + 7.6 = ? (a) 12.03 (b) 12.13 (c) 5.29 (d) 12.23

Answer key

  1. 8.38
  2. 0.49
  3. 0.64
  4. 40
  5. 8.52
  6. 11.66
  7. 50
  8. 9.31
  9. 14.32
  10. 11.09
  11. 0.73
  12. 14.85
  13. 5.43
  14. 0.03
  15. 0.063
  16. 10.46
  17. 13.78
  18. 0.05
  19. 10.04
  20. 0.068
  21. 12.54
  22. 30
  23. 6.74
  24. 0.03
  25. 14.78
  26. 10.08
  27. 80
  28. 0.006
  29. 0.093
  30. 0.01
  31. 14.88
  32. 0.028
  33. 0.061
  34. 8
  35. 0.066
  36. 0.1
  37. 0.079
  38. 0.004
  39. 7
  40. 12.13

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