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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 846 · 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. 1.7.78 + 9.7 = ? (a) 8.75 (b) 17.58 (c) 17.48 (d) 17.38
  2. 2.What is the value of the digit 9 in 98.641? (a) 9 (b) 0.9 (c) 0.09 (d) 90
  3. 3.8.23 + 7.5 = ? (a) 15.83 (b) 15.63 (c) 15.73 (d) 8.98
  4. 4.What is the value of the digit 1 in 12.369? (a) 10 (b) 1 (c) 0.01 (d) 0.1
  5. 5.6.28 + 4.5 = ? (a) 10.78 (b) 10.68 (c) 6.73 (d) 10.88
  6. 6.5.25 + 1.5 = ? (a) 5.4 (b) 6.65 (c) 6.75 (d) 6.85
  7. 7.What is the value of the digit 8 in 72.834? (a) 0.08 (b) 0.8 (c) 8 (d) 0.008
  8. 8.Which is the smallest: 0.243, 0.36, 0.3, 0.054? (a) 0.243 (b) 0.36 (c) 0.3 (d) 0.054
  9. 9.Which is the smallest: 0.37, 0.3, 0.061, 0.249? (a) 0.37 (b) 0.3 (c) 0.061 (d) 0.249
  10. 10.8.62 + 4.5 = ? (a) 13.02 (b) 13.22 (c) 9.07 (d) 13.12
  11. 11.8.12 + 9.5 = ? (a) 17.52 (b) 9.07 (c) 17.72 (d) 17.62
  12. 12.5.56 + 3.4 = ? (a) 9.06 (b) 5.9 (c) 8.96 (d) 8.86
  13. 13.Which is the greatest: 0.022, 0.4, 0.363, 0.47? (a) 0.022 (b) 0.4 (c) 0.363 (d) 0.47
  14. 14.Which is the smallest: 0.062, 0.4, 0.371, 0.44? (a) 0.062 (b) 0.4 (c) 0.371 (d) 0.44
  15. 15.4.53 + 8.9 = ? (a) 13.33 (b) 13.43 (c) 5.42 (d) 13.53
  16. 16.Which is the smallest: 0.22, 0.082, 0.2, 0.148? (a) 0.22 (b) 0.082 (c) 0.2 (d) 0.148
  17. 17.8.36 + 7.8 = ? (a) 16.26 (b) 9.14 (c) 16.16 (d) 16.06
  18. 18.What is the value of the digit 1 in 26.145? (a) 1 (b) 0.1 (c) 0.01 (d) 0.001
  19. 19.Which is the smallest: 0.3, 0.039, 0.39, 0.297? (a) 0.3 (b) 0.039 (c) 0.39 (d) 0.297
  20. 20.3.99 + 3.1 = ? (a) 7.09 (b) 7.19 (c) 4.3 (d) 6.99
  21. 21.What is the value of the digit 5 in 85.726? (a) 0.05 (b) 0.5 (c) 5 (d) 50
  22. 22.Which is the smallest: 0.712, 0.84, 0.014, 0.8? (a) 0.712 (b) 0.84 (c) 0.014 (d) 0.8
  23. 23.Which is the greatest: 0.783, 0.8, 0.062, 0.86? (a) 0.783 (b) 0.8 (c) 0.062 (d) 0.86
  24. 24.Which is the smallest: 0.491, 0.5, 0.047, 0.54? (a) 0.491 (b) 0.5 (c) 0.047 (d) 0.54
  25. 25.6.25 + 6.7 = ? (a) 6.92 (b) 12.85 (c) 13.05 (d) 12.95
  26. 26.What is the value of the digit 2 in 47.592? (a) 0.2 (b) 0.002 (c) 2 (d) 0.02
  27. 27.9.02 + 9.7 = ? (a) 9.99 (b) 18.62 (c) 18.82 (d) 18.72
  28. 28.Which is the smallest: 0.781, 0.8, 0.014, 0.82? (a) 0.781 (b) 0.8 (c) 0.014 (d) 0.82
  29. 29.1.91 + 8.9 = ? (a) 10.71 (b) 2.8 (c) 10.91 (d) 10.81
  30. 30.Which is the smallest: 0.29, 0.2, 0.098, 0.138? (a) 0.29 (b) 0.2 (c) 0.098 (d) 0.138
  31. 31.8.88 + 3.2 = ? (a) 9.2 (b) 11.98 (c) 12.18 (d) 12.08
  32. 32.What is the value of the digit 2 in 71.425? (a) 0.2 (b) 0.02 (c) 2 (d) 0.002
  33. 33.9.05 + 4.1 = ? (a) 9.46 (b) 13.25 (c) 13.15 (d) 13.05
  34. 34.What is the value of the digit 4 in 85.346? (a) 0.004 (b) 0.4 (c) 4 (d) 0.04
  35. 35.8.97 + 3.6 = ? (a) 12.67 (b) 12.57 (c) 12.47 (d) 9.33
  36. 36.5.16 + 3.1 = ? (a) 8.26 (b) 5.47 (c) 8.16 (d) 8.36
  37. 37.3.31 + 9.5 = ? (a) 4.26 (b) 12.81 (c) 12.71 (d) 12.91
  38. 38.What is the value of the digit 6 in 65.182? (a) 6 (b) 0.6 (c) 60 (d) 0.06
  39. 39.What is the value of the digit 3 in 54.273? (a) 0.3 (b) 0.003 (c) 0.03 (d) 3
  40. 40.What is the value of the digit 8 in 53.864? (a) 0.8 (b) 8 (c) 0.08 (d) 0.008

Answer key

  1. 17.48
  2. 90
  3. 15.73
  4. 10
  5. 10.78
  6. 6.75
  7. 0.8
  8. 0.054
  9. 0.061
  10. 13.12
  11. 17.62
  12. 8.96
  13. 0.47
  14. 0.062
  15. 13.43
  16. 0.082
  17. 16.16
  18. 0.1
  19. 0.039
  20. 7.09
  21. 5
  22. 0.014
  23. 0.86
  24. 0.047
  25. 12.95
  26. 0.002
  27. 18.72
  28. 0.014
  29. 10.81
  30. 0.098
  31. 12.08
  32. 0.02
  33. 13.15
  34. 0.04
  35. 12.57
  36. 8.26
  37. 12.81
  38. 60
  39. 0.003
  40. 0.8

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