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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 797 · 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 69.873? (a) 0.007 (b) 0.07 (c) 7 (d) 0.7
  2. 2.5.81 + 7.8 = ? (a) 13.61 (b) 6.59 (c) 13.51 (d) 13.71
  3. 3.Which is the smallest: 0.8, 0.729, 0.88, 0.011? (a) 0.8 (b) 0.729 (c) 0.88 (d) 0.011
  4. 4.Which is the smallest: 0.032, 0.49, 0.341, 0.4? (a) 0.032 (b) 0.49 (c) 0.341 (d) 0.4
  5. 5.9.45 + 4.5 = ? (a) 14.05 (b) 13.85 (c) 13.95 (d) 9.9
  6. 6.7.28 + 4.6 = ? (a) 7.74 (b) 11.88 (c) 11.98 (d) 11.78
  7. 7.What is the value of the digit 4 in 48.532? (a) 4 (b) 0.4 (c) 40 (d) 0.04
  8. 8.8.95 + 6.1 = ? (a) 14.95 (b) 15.05 (c) 15.15 (d) 9.56
  9. 9.What is the value of the digit 2 in 89.264? (a) 0.02 (b) 2 (c) 0.2 (d) 0.002
  10. 10.Which is the smallest: 0.8, 0.095, 0.717, 0.86? (a) 0.8 (b) 0.095 (c) 0.717 (d) 0.86
  11. 11.2.28 + 4.5 = ? (a) 6.78 (b) 6.88 (c) 6.68 (d) 2.73
  12. 12.What is the value of the digit 9 in 69.825? (a) 9 (b) 0.09 (c) 90 (d) 0.9
  13. 13.2.49 + 3.9 = ? (a) 2.88 (b) 6.39 (c) 6.29 (d) 6.49
  14. 14.What is the value of the digit 6 in 43.618? (a) 6 (b) 0.06 (c) 0.6 (d) 0.006
  15. 15.What is the value of the digit 9 in 57.392? (a) 0.009 (b) 0.09 (c) 9 (d) 0.9
  16. 16.2.23 + 3.2 = ? (a) 5.53 (b) 5.43 (c) 2.55 (d) 5.33
  17. 17.What is the value of the digit 9 in 39.478? (a) 0.09 (b) 90 (c) 0.9 (d) 9
  18. 18.What is the value of the digit 7 in 16.287? (a) 7 (b) 0.007 (c) 0.7 (d) 0.07
  19. 19.2.71 + 4.4 = ? (a) 7.11 (b) 7.21 (c) 7.01 (d) 3.15
  20. 20.Which is the greatest: 0.3, 0.042, 0.224, 0.37? (a) 0.3 (b) 0.042 (c) 0.224 (d) 0.37
  21. 21.Which is the smallest: 0.5, 0.53, 0.479, 0.038? (a) 0.5 (b) 0.53 (c) 0.479 (d) 0.038
  22. 22.7.97 + 5.3 = ? (a) 13.17 (b) 13.37 (c) 8.5 (d) 13.27
  23. 23.What is the value of the digit 9 in 14.985? (a) 0.09 (b) 0.009 (c) 9 (d) 0.9
  24. 24.Which is the smallest: 0.34, 0.224, 0.089, 0.3? (a) 0.34 (b) 0.224 (c) 0.089 (d) 0.3
  25. 25.What is the value of the digit 2 in 26.815? (a) 0.2 (b) 2 (c) 20 (d) 0.02
  26. 26.Which is the greatest: 0.472, 0.045, 0.56, 0.5? (a) 0.472 (b) 0.045 (c) 0.56 (d) 0.5
  27. 27.1.99 + 5.8 = ? (a) 7.69 (b) 7.89 (c) 2.57 (d) 7.79
  28. 28.Which is the greatest: 0.094, 0.8, 0.83, 0.715? (a) 0.094 (b) 0.8 (c) 0.83 (d) 0.715
  29. 29.Which is the smallest: 0.7, 0.72, 0.617, 0.055? (a) 0.7 (b) 0.72 (c) 0.617 (d) 0.055
  30. 30.6.68 + 3.5 = ? (a) 10.08 (b) 7.03 (c) 10.18 (d) 10.28
  31. 31.What is the value of the digit 2 in 87.123? (a) 2 (b) 0.002 (c) 0.02 (d) 0.2
  32. 32.What is the value of the digit 5 in 67.485? (a) 0.005 (b) 0.5 (c) 0.05 (d) 5
  33. 33.Which is the greatest: 0.034, 0.8, 0.741, 0.87? (a) 0.034 (b) 0.8 (c) 0.741 (d) 0.87
  34. 34.3.29 + 3.4 = ? (a) 6.79 (b) 3.63 (c) 6.69 (d) 6.59
  35. 35.2.74 + 5.9 = ? (a) 3.33 (b) 8.74 (c) 8.64 (d) 8.54
  36. 36.Which is the greatest: 0.036, 0.135, 0.2, 0.26? (a) 0.036 (b) 0.135 (c) 0.2 (d) 0.26
  37. 37.What is the value of the digit 9 in 97.856? (a) 9 (b) 0.9 (c) 0.09 (d) 90
  38. 38.1.41 + 3.1 = ? (a) 4.51 (b) 4.41 (c) 4.61 (d) 1.72
  39. 39.What is the value of the digit 6 in 79.286? (a) 0.06 (b) 0.6 (c) 0.006 (d) 6
  40. 40.5.41 + 2.1 = ? (a) 5.62 (b) 7.41 (c) 7.61 (d) 7.51

Answer key

  1. 0.07
  2. 13.61
  3. 0.011
  4. 0.032
  5. 13.95
  6. 11.88
  7. 40
  8. 15.05
  9. 0.2
  10. 0.095
  11. 6.78
  12. 9
  13. 6.39
  14. 0.6
  15. 0.09
  16. 5.43
  17. 9
  18. 0.007
  19. 7.11
  20. 0.37
  21. 0.038
  22. 13.27
  23. 0.9
  24. 0.089
  25. 20
  26. 0.56
  27. 7.79
  28. 0.83
  29. 0.055
  30. 10.18
  31. 0.02
  32. 0.005
  33. 0.87
  34. 6.69
  35. 8.64
  36. 0.26
  37. 90
  38. 4.51
  39. 0.006
  40. 7.51

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