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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 217 · 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. 1.7.95 + 7.1 = ? (a) 8.66 (b) 15.05 (c) 15.15 (d) 14.95
  2. 2.Which is the smallest: 0.129, 0.28, 0.044, 0.2? (a) 0.129 (b) 0.28 (c) 0.044 (d) 0.2
  3. 3.3.02 + 3.8 = ? (a) 6.92 (b) 3.4 (c) 6.72 (d) 6.82
  4. 4.Which is the smallest: 0.046, 0.81, 0.782, 0.8? (a) 0.046 (b) 0.81 (c) 0.782 (d) 0.8
  5. 5.1.23 + 2.7 = ? (a) 3.83 (b) 3.93 (c) 1.5 (d) 4.03
  6. 6.What is the value of the digit 5 in 38.952? (a) 0.05 (b) 0.5 (c) 5 (d) 0.005
  7. 7.Which is the greatest: 0.62, 0.6, 0.045, 0.593? (a) 0.62 (b) 0.6 (c) 0.045 (d) 0.593
  8. 8.8.98 + 5.2 = ? (a) 14.18 (b) 14.28 (c) 9.5 (d) 14.08
  9. 9.Which is the greatest: 0.29, 0.124, 0.029, 0.2? (a) 0.29 (b) 0.124 (c) 0.029 (d) 0.2
  10. 10.What is the value of the digit 7 in 96.517? (a) 0.07 (b) 0.7 (c) 0.007 (d) 7
  11. 11.7.17 + 4.3 = ? (a) 7.6 (b) 11.57 (c) 11.37 (d) 11.47
  12. 12.What is the value of the digit 8 in 21.874? (a) 0.08 (b) 0.008 (c) 8 (d) 0.8
  13. 13.What is the value of the digit 4 in 14.739? (a) 4 (b) 0.4 (c) 0.04 (d) 40
  14. 14.What is the value of the digit 4 in 36.948? (a) 4 (b) 0.4 (c) 0.04 (d) 0.004
  15. 15.Which is the greatest: 0.376, 0.4, 0.41, 0.019? (a) 0.376 (b) 0.4 (c) 0.41 (d) 0.019
  16. 16.1.89 + 4.7 = ? (a) 2.36 (b) 6.49 (c) 6.69 (d) 6.59
  17. 17.Which is the greatest: 0.6, 0.563, 0.68, 0.025? (a) 0.6 (b) 0.563 (c) 0.68 (d) 0.025
  18. 18.8.91 + 2.9 = ? (a) 11.91 (b) 9.2 (c) 11.81 (d) 11.71
  19. 19.Which is the smallest: 0.615, 0.78, 0.081, 0.7? (a) 0.615 (b) 0.78 (c) 0.081 (d) 0.7
  20. 20.Which is the greatest: 0.5, 0.432, 0.52, 0.069? (a) 0.5 (b) 0.432 (c) 0.52 (d) 0.069
  21. 21.What is the value of the digit 3 in 35.724? (a) 0.03 (b) 0.3 (c) 3 (d) 30
  22. 22.Which is the greatest: 0.092, 0.33, 0.217, 0.3? (a) 0.092 (b) 0.33 (c) 0.217 (d) 0.3
  23. 23.4.01 + 4.1 = ? (a) 8.21 (b) 4.42 (c) 8.11 (d) 8.01
  24. 24.Which is the smallest: 0.54, 0.5, 0.076, 0.419? (a) 0.54 (b) 0.5 (c) 0.076 (d) 0.419
  25. 25.What is the value of the digit 6 in 75.396? (a) 0.06 (b) 0.006 (c) 6 (d) 0.6
  26. 26.Which is the greatest: 0.082, 0.4, 0.372, 0.47? (a) 0.082 (b) 0.4 (c) 0.372 (d) 0.47
  27. 27.6.96 + 7.4 = ? (a) 14.36 (b) 14.26 (c) 14.46 (d) 7.7
  28. 28.Which is the smallest: 0.2, 0.166, 0.098, 0.24? (a) 0.2 (b) 0.166 (c) 0.098 (d) 0.24
  29. 29.What is the value of the digit 7 in 78.639? (a) 70 (b) 0.7 (c) 0.07 (d) 7
  30. 30.What is the value of the digit 9 in 19.483? (a) 0.09 (b) 0.9 (c) 9 (d) 90
  31. 31.What is the value of the digit 1 in 51.826? (a) 0.01 (b) 10 (c) 1 (d) 0.1
  32. 32.1.21 + 8.7 = ? (a) 10.01 (b) 9.81 (c) 2.08 (d) 9.91
  33. 33.Which is the greatest: 0.4, 0.42, 0.055, 0.353? (a) 0.4 (b) 0.42 (c) 0.055 (d) 0.353
  34. 34.6.87 + 7.7 = ? (a) 14.67 (b) 14.57 (c) 14.47 (d) 7.64
  35. 35.Which is the greatest: 0.352, 0.42, 0.063, 0.4? (a) 0.352 (b) 0.42 (c) 0.063 (d) 0.4
  36. 36.Which is the greatest: 0.056, 0.666, 0.79, 0.7? (a) 0.056 (b) 0.666 (c) 0.79 (d) 0.7
  37. 37.3.64 + 2.9 = ? (a) 6.54 (b) 3.93 (c) 6.64 (d) 6.44
  38. 38.Which is the greatest: 0.477, 0.029, 0.5, 0.55? (a) 0.477 (b) 0.029 (c) 0.5 (d) 0.55
  39. 39.Which is the greatest: 0.3, 0.36, 0.223, 0.093? (a) 0.3 (b) 0.36 (c) 0.223 (d) 0.093
  40. 40.What is the value of the digit 8 in 81.759? (a) 0.8 (b) 8 (c) 0.08 (d) 80

Answer key

  1. 15.05
  2. 0.044
  3. 6.82
  4. 0.046
  5. 3.93
  6. 0.05
  7. 0.62
  8. 14.18
  9. 0.29
  10. 0.007
  11. 11.47
  12. 0.8
  13. 4
  14. 0.04
  15. 0.41
  16. 6.59
  17. 0.68
  18. 11.81
  19. 0.081
  20. 0.52
  21. 30
  22. 0.33
  23. 8.11
  24. 0.076
  25. 0.006
  26. 0.47
  27. 14.36
  28. 0.098
  29. 70
  30. 9
  31. 1
  32. 9.91
  33. 0.42
  34. 14.57
  35. 0.42
  36. 0.79
  37. 6.54
  38. 0.55
  39. 0.36
  40. 80

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