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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 545 · 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 2 in 45.127? (a) 2 (b) 0.2 (c) 0.002 (d) 0.02
  2. 2.7.82 + 9.9 = ? (a) 17.82 (b) 8.81 (c) 17.62 (d) 17.72
  3. 3.Which is the smallest: 0.6, 0.523, 0.038, 0.63? (a) 0.6 (b) 0.523 (c) 0.038 (d) 0.63
  4. 4.Which is the smallest: 0.87, 0.8, 0.742, 0.021? (a) 0.87 (b) 0.8 (c) 0.742 (d) 0.021
  5. 5.What is the value of the digit 5 in 61.523? (a) 0.005 (b) 0.5 (c) 0.05 (d) 5
  6. 6.Which is the greatest: 0.638, 0.7, 0.71, 0.047? (a) 0.638 (b) 0.7 (c) 0.71 (d) 0.047
  7. 7.8.88 + 3.4 = ? (a) 12.18 (b) 12.28 (c) 12.38 (d) 9.22
  8. 8.Which is the greatest: 0.421, 0.52, 0.015, 0.5? (a) 0.421 (b) 0.52 (c) 0.015 (d) 0.5
  9. 9.7.12 + 6.1 = ? (a) 13.32 (b) 13.12 (c) 7.73 (d) 13.22
  10. 10.What is the value of the digit 8 in 31.285? (a) 0.8 (b) 0.008 (c) 8 (d) 0.08
  11. 11.What is the value of the digit 5 in 46.578? (a) 0.5 (b) 5 (c) 0.05 (d) 0.005
  12. 12.What is the value of the digit 1 in 42.931? (a) 1 (b) 0.001 (c) 0.01 (d) 0.1
  13. 13.What is the value of the digit 7 in 57.193? (a) 0.7 (b) 0.07 (c) 7 (d) 70
  14. 14.What is the value of the digit 1 in 12.784? (a) 0.01 (b) 1 (c) 0.1 (d) 10
  15. 15.Which is the smallest: 0.77, 0.622, 0.066, 0.7? (a) 0.77 (b) 0.622 (c) 0.066 (d) 0.7
  16. 16.5.47 + 4.7 = ? (a) 10.17 (b) 10.27 (c) 5.94 (d) 10.07
  17. 17.Which is the smallest: 0.031, 0.78, 0.642, 0.7? (a) 0.031 (b) 0.78 (c) 0.642 (d) 0.7
  18. 18.4.11 + 3.1 = ? (a) 7.11 (b) 7.21 (c) 4.42 (d) 7.31
  19. 19.9.01 + 7.7 = ? (a) 16.81 (b) 9.78 (c) 16.61 (d) 16.71
  20. 20.Which is the greatest: 0.045, 0.522, 0.6, 0.67? (a) 0.045 (b) 0.522 (c) 0.6 (d) 0.67
  21. 21.4.67 + 2.8 = ? (a) 7.37 (b) 7.57 (c) 7.47 (d) 4.95
  22. 22.What is the value of the digit 6 in 26.935? (a) 0.06 (b) 60 (c) 6 (d) 0.6
  23. 23.6.12 + 8.3 = ? (a) 14.32 (b) 14.42 (c) 14.52 (d) 6.95
  24. 24.2.87 + 2.1 = ? (a) 3.08 (b) 4.87 (c) 5.07 (d) 4.97
  25. 25.What is the value of the digit 5 in 62.571? (a) 0.05 (b) 0.005 (c) 0.5 (d) 5
  26. 26.Which is the greatest: 0.531, 0.019, 0.63, 0.6? (a) 0.531 (b) 0.019 (c) 0.63 (d) 0.6
  27. 27.What is the value of the digit 8 in 76.815? (a) 0.08 (b) 0.008 (c) 0.8 (d) 8
  28. 28.What is the value of the digit 4 in 28.354? (a) 4 (b) 0.4 (c) 0.004 (d) 0.04
  29. 29.2.54 + 8.1 = ? (a) 10.64 (b) 10.74 (c) 10.54 (d) 3.35
  30. 30.Which is the smallest: 0.298, 0.3, 0.062, 0.34? (a) 0.298 (b) 0.3 (c) 0.062 (d) 0.34
  31. 31.4.11 + 7.5 = ? (a) 11.61 (b) 11.71 (c) 11.51 (d) 4.86
  32. 32.What is the value of the digit 4 in 17.489? (a) 0.4 (b) 4 (c) 0.04 (d) 0.004
  33. 33.Which is the greatest: 0.77, 0.7, 0.062, 0.626? (a) 0.77 (b) 0.7 (c) 0.062 (d) 0.626
  34. 34.Which is the greatest: 0.368, 0.46, 0.4, 0.071? (a) 0.368 (b) 0.46 (c) 0.4 (d) 0.071
  35. 35.What is the value of the digit 1 in 26.417? (a) 0.1 (b) 1 (c) 0.01 (d) 0.001
  36. 36.What is the value of the digit 1 in 34.251? (a) 0.01 (b) 0.1 (c) 0.001 (d) 1
  37. 37.8.04 + 9.1 = ? (a) 17.14 (b) 17.04 (c) 17.24 (d) 8.95
  38. 38.What is the value of the digit 4 in 39.864? (a) 0.04 (b) 0.004 (c) 0.4 (d) 4
  39. 39.5.14 + 5.6 = ? (a) 10.84 (b) 10.74 (c) 5.7 (d) 10.64
  40. 40.7.98 + 3.2 = ? (a) 11.08 (b) 8.3 (c) 11.18 (d) 11.28

Answer key

  1. 0.02
  2. 17.72
  3. 0.038
  4. 0.021
  5. 0.5
  6. 0.71
  7. 12.28
  8. 0.52
  9. 13.22
  10. 0.08
  11. 0.5
  12. 0.001
  13. 7
  14. 10
  15. 0.066
  16. 10.17
  17. 0.031
  18. 7.21
  19. 16.71
  20. 0.67
  21. 7.47
  22. 6
  23. 14.42
  24. 4.97
  25. 0.5
  26. 0.63
  27. 0.8
  28. 0.004
  29. 10.64
  30. 0.062
  31. 11.61
  32. 0.4
  33. 0.77
  34. 0.46
  35. 0.01
  36. 0.001
  37. 17.14
  38. 0.004
  39. 10.74
  40. 11.18

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