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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 525 · 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 24.539? (a) 2 (b) 20 (c) 0.2 (d) 0.02
  2. 2.What is the value of the digit 1 in 61.479? (a) 0.01 (b) 0.1 (c) 1 (d) 10
  3. 3.Which is the greatest: 0.5, 0.53, 0.045, 0.483? (a) 0.5 (b) 0.53 (c) 0.045 (d) 0.483
  4. 4.2.19 + 7.9 = ? (a) 10.19 (b) 2.98 (c) 9.99 (d) 10.09
  5. 5.What is the value of the digit 9 in 89.134? (a) 0.9 (b) 9 (c) 0.09 (d) 90
  6. 6.8.17 + 8.1 = ? (a) 8.98 (b) 16.27 (c) 16.17 (d) 16.37
  7. 7.7.05 + 2.1 = ? (a) 7.26 (b) 9.25 (c) 9.15 (d) 9.05
  8. 8.1.65 + 8.8 = ? (a) 2.53 (b) 10.45 (c) 10.35 (d) 10.55
  9. 9.Which is the smallest: 0.654, 0.086, 0.7, 0.76? (a) 0.654 (b) 0.086 (c) 0.7 (d) 0.76
  10. 10.Which is the smallest: 0.031, 0.634, 0.7, 0.74? (a) 0.031 (b) 0.634 (c) 0.7 (d) 0.74
  11. 11.Which is the greatest: 0.26, 0.028, 0.199, 0.2? (a) 0.26 (b) 0.028 (c) 0.199 (d) 0.2
  12. 12.3.21 + 3.1 = ? (a) 6.41 (b) 6.21 (c) 6.31 (d) 3.52
  13. 13.9.91 + 3.7 = ? (a) 13.51 (b) 10.28 (c) 13.71 (d) 13.61
  14. 14.7.51 + 1.8 = ? (a) 9.21 (b) 9.31 (c) 9.41 (d) 7.69
  15. 15.6.51 + 3.7 = ? (a) 6.88 (b) 10.11 (c) 10.21 (d) 10.31
  16. 16.Which is the greatest: 0.079, 0.49, 0.4, 0.382? (a) 0.079 (b) 0.49 (c) 0.4 (d) 0.382
  17. 17.What is the value of the digit 4 in 49.187? (a) 4 (b) 0.4 (c) 0.04 (d) 40
  18. 18.4.64 + 6.9 = ? (a) 11.64 (b) 11.44 (c) 5.33 (d) 11.54
  19. 19.Which is the smallest: 0.6, 0.559, 0.67, 0.016? (a) 0.6 (b) 0.559 (c) 0.67 (d) 0.016
  20. 20.What is the value of the digit 3 in 95.813? (a) 0.03 (b) 0.3 (c) 3 (d) 0.003
  21. 21.7.93 + 5.3 = ? (a) 13.13 (b) 8.46 (c) 13.23 (d) 13.33
  22. 22.6.24 + 3.9 = ? (a) 10.14 (b) 10.04 (c) 6.63 (d) 10.24
  23. 23.Which is the greatest: 0.4, 0.022, 0.313, 0.44? (a) 0.4 (b) 0.022 (c) 0.313 (d) 0.44
  24. 24.What is the value of the digit 9 in 96.251? (a) 0.09 (b) 90 (c) 9 (d) 0.9
  25. 25.2.82 + 1.2 = ? (a) 4.12 (b) 2.94 (c) 4.02 (d) 3.92
  26. 26.Which is the greatest: 0.59, 0.427, 0.5, 0.023? (a) 0.59 (b) 0.427 (c) 0.5 (d) 0.023
  27. 27.What is the value of the digit 5 in 54.793? (a) 5 (b) 0.5 (c) 0.05 (d) 50
  28. 28.Which is the greatest: 0.36, 0.274, 0.087, 0.3? (a) 0.36 (b) 0.274 (c) 0.087 (d) 0.3
  29. 29.3.58 + 7.7 = ? (a) 4.35 (b) 11.18 (c) 11.38 (d) 11.28
  30. 30.What is the value of the digit 2 in 19.682? (a) 2 (b) 0.2 (c) 0.002 (d) 0.02
  31. 31.Which is the smallest: 0.552, 0.62, 0.012, 0.6? (a) 0.552 (b) 0.62 (c) 0.012 (d) 0.6
  32. 32.4.95 + 7.4 = ? (a) 12.45 (b) 12.35 (c) 5.69 (d) 12.25
  33. 33.Which is the greatest: 0.015, 0.81, 0.8, 0.736? (a) 0.015 (b) 0.81 (c) 0.8 (d) 0.736
  34. 34.What is the value of the digit 3 in 23.518? (a) 0.3 (b) 3 (c) 30 (d) 0.03
  35. 35.Which is the greatest: 0.26, 0.017, 0.139, 0.2? (a) 0.26 (b) 0.017 (c) 0.139 (d) 0.2
  36. 36.Which is the greatest: 0.197, 0.29, 0.2, 0.036? (a) 0.197 (b) 0.29 (c) 0.2 (d) 0.036
  37. 37.Which is the smallest: 0.8, 0.88, 0.099, 0.787? (a) 0.8 (b) 0.88 (c) 0.099 (d) 0.787
  38. 38.Which is the smallest: 0.061, 0.6, 0.61, 0.533? (a) 0.061 (b) 0.6 (c) 0.61 (d) 0.533
  39. 39.1.21 + 2.4 = ? (a) 3.51 (b) 3.61 (c) 1.45 (d) 3.71
  40. 40.What is the value of the digit 8 in 15.387? (a) 8 (b) 0.08 (c) 0.8 (d) 0.008

Answer key

  1. 20
  2. 1
  3. 0.53
  4. 10.09
  5. 9
  6. 16.27
  7. 9.15
  8. 10.45
  9. 0.086
  10. 0.031
  11. 0.26
  12. 6.31
  13. 13.61
  14. 9.31
  15. 10.21
  16. 0.49
  17. 40
  18. 11.54
  19. 0.016
  20. 0.003
  21. 13.23
  22. 10.14
  23. 0.44
  24. 90
  25. 4.02
  26. 0.59
  27. 50
  28. 0.36
  29. 11.28
  30. 0.002
  31. 0.012
  32. 12.35
  33. 0.81
  34. 3
  35. 0.26
  36. 0.29
  37. 0.099
  38. 0.061
  39. 3.61
  40. 0.08

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