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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 456 · 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. 1.7.28 + 5.5 = ? (a) 12.78 (b) 7.83 (c) 12.68 (d) 12.88
  2. 2.What is the value of the digit 2 in 36.425? (a) 2 (b) 0.002 (c) 0.02 (d) 0.2
  3. 3.What is the value of the digit 7 in 98.417? (a) 0.007 (b) 0.07 (c) 7 (d) 0.7
  4. 4.7.81 + 9.7 = ? (a) 8.78 (b) 17.51 (c) 17.61 (d) 17.41
  5. 5.What is the value of the digit 1 in 85.914? (a) 0.01 (b) 0.001 (c) 1 (d) 0.1
  6. 6.7.23 + 7.2 = ? (a) 14.53 (b) 7.95 (c) 14.33 (d) 14.43
  7. 7.9.96 + 8.5 = ? (a) 18.56 (b) 18.36 (c) 18.46 (d) 10.81
  8. 8.What is the value of the digit 9 in 19.572? (a) 90 (b) 0.9 (c) 9 (d) 0.09
  9. 9.What is the value of the digit 2 in 82.719? (a) 20 (b) 0.02 (c) 0.2 (d) 2
  10. 10.Which is the greatest: 0.61, 0.6, 0.578, 0.018? (a) 0.61 (b) 0.6 (c) 0.578 (d) 0.018
  11. 11.8.56 + 4.3 = ? (a) 12.96 (b) 12.86 (c) 12.76 (d) 8.99
  12. 12.Which is the smallest: 0.63, 0.561, 0.6, 0.042? (a) 0.63 (b) 0.561 (c) 0.6 (d) 0.042
  13. 13.Which is the greatest: 0.214, 0.064, 0.37, 0.3? (a) 0.214 (b) 0.064 (c) 0.37 (d) 0.3
  14. 14.What is the value of the digit 6 in 91.726? (a) 0.6 (b) 0.06 (c) 0.006 (d) 6
  15. 15.Which is the greatest: 0.7, 0.79, 0.688, 0.046? (a) 0.7 (b) 0.79 (c) 0.688 (d) 0.046
  16. 16.What is the value of the digit 2 in 58.423? (a) 0.2 (b) 0.02 (c) 0.002 (d) 2
  17. 17.1.46 + 2.8 = ? (a) 1.74 (b) 4.26 (c) 4.16 (d) 4.36
  18. 18.What is the value of the digit 2 in 15.298? (a) 0.2 (b) 2 (c) 0.002 (d) 0.02
  19. 19.6.73 + 2.8 = ? (a) 9.43 (b) 9.63 (c) 7.01 (d) 9.53
  20. 20.What is the value of the digit 2 in 94.231? (a) 0.02 (b) 2 (c) 0.002 (d) 0.2
  21. 21.What is the value of the digit 4 in 49.218? (a) 0.04 (b) 40 (c) 4 (d) 0.4
  22. 22.Which is the greatest: 0.49, 0.4, 0.085, 0.339? (a) 0.49 (b) 0.4 (c) 0.085 (d) 0.339
  23. 23.What is the value of the digit 7 in 64.275? (a) 0.7 (b) 7 (c) 0.007 (d) 0.07
  24. 24.Which is the greatest: 0.038, 0.4, 0.371, 0.47? (a) 0.038 (b) 0.4 (c) 0.371 (d) 0.47
  25. 25.Which is the greatest: 0.111, 0.077, 0.27, 0.2? (a) 0.111 (b) 0.077 (c) 0.27 (d) 0.2
  26. 26.2.09 + 1.6 = ? (a) 3.79 (b) 3.59 (c) 3.69 (d) 2.25
  27. 27.5.81 + 6.9 = ? (a) 12.81 (b) 6.5 (c) 12.71 (d) 12.61
  28. 28.7.04 + 5.9 = ? (a) 13.04 (b) 7.63 (c) 12.84 (d) 12.94
  29. 29.4.67 + 6.6 = ? (a) 11.37 (b) 11.27 (c) 11.17 (d) 5.33
  30. 30.Which is the smallest: 0.139, 0.27, 0.2, 0.057? (a) 0.139 (b) 0.27 (c) 0.2 (d) 0.057
  31. 31.What is the value of the digit 2 in 37.125? (a) 0.2 (b) 2 (c) 0.002 (d) 0.02
  32. 32.9.23 + 3.5 = ? (a) 12.83 (b) 12.63 (c) 12.73 (d) 9.58
  33. 33.8.67 + 8.7 = ? (a) 9.54 (b) 17.37 (c) 17.27 (d) 17.47
  34. 34.What is the value of the digit 8 in 82.475? (a) 0.08 (b) 0.8 (c) 80 (d) 8
  35. 35.9.65 + 7.6 = ? (a) 17.25 (b) 10.41 (c) 17.15 (d) 17.35
  36. 36.1.61 + 6.9 = ? (a) 2.3 (b) 8.41 (c) 8.61 (d) 8.51
  37. 37.Which is the greatest: 0.638, 0.75, 0.097, 0.7? (a) 0.638 (b) 0.75 (c) 0.097 (d) 0.7
  38. 38.Which is the greatest: 0.4, 0.357, 0.054, 0.43? (a) 0.4 (b) 0.357 (c) 0.054 (d) 0.43
  39. 39.Which is the greatest: 0.2, 0.186, 0.077, 0.23? (a) 0.2 (b) 0.186 (c) 0.077 (d) 0.23
  40. 40.6.43 + 5.1 = ? (a) 11.43 (b) 11.63 (c) 6.94 (d) 11.53

Answer key

  1. 12.78
  2. 0.02
  3. 0.007
  4. 17.51
  5. 0.01
  6. 14.43
  7. 18.46
  8. 9
  9. 2
  10. 0.61
  11. 12.86
  12. 0.042
  13. 0.37
  14. 0.006
  15. 0.79
  16. 0.02
  17. 4.26
  18. 0.2
  19. 9.53
  20. 0.2
  21. 40
  22. 0.49
  23. 0.07
  24. 0.47
  25. 0.27
  26. 3.69
  27. 12.71
  28. 12.94
  29. 11.27
  30. 0.057
  31. 0.02
  32. 12.73
  33. 17.37
  34. 80
  35. 17.25
  36. 8.51
  37. 0.75
  38. 0.43
  39. 0.23
  40. 11.53

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