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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 949 · 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. 1.2.28 + 2.4 = ? (a) 4.78 (b) 2.52 (c) 4.68 (d) 4.58
  2. 2.9.35 + 7.1 = ? (a) 16.55 (b) 16.35 (c) 10.06 (d) 16.45
  3. 3.Which is the greatest: 0.2, 0.129, 0.25, 0.069? (a) 0.2 (b) 0.129 (c) 0.25 (d) 0.069
  4. 4.4.58 + 2.2 = ? (a) 6.68 (b) 6.88 (c) 6.78 (d) 4.8
  5. 5.Which is the smallest: 0.156, 0.063, 0.2, 0.23? (a) 0.156 (b) 0.063 (c) 0.2 (d) 0.23
  6. 6.What is the value of the digit 2 in 98.246? (a) 0.02 (b) 2 (c) 0.002 (d) 0.2
  7. 7.4.71 + 1.7 = ? (a) 6.51 (b) 6.41 (c) 6.31 (d) 4.88
  8. 8.7.03 + 3.9 = ? (a) 7.42 (b) 10.93 (c) 11.03 (d) 10.83
  9. 9.Which is the greatest: 0.089, 0.323, 0.4, 0.48? (a) 0.089 (b) 0.323 (c) 0.4 (d) 0.48
  10. 10.3.68 + 9.9 = ? (a) 13.58 (b) 4.67 (c) 13.48 (d) 13.68
  11. 11.3.54 + 7.7 = ? (a) 11.14 (b) 11.24 (c) 4.31 (d) 11.34
  12. 12.Which is the greatest: 0.194, 0.21, 0.081, 0.2? (a) 0.194 (b) 0.21 (c) 0.081 (d) 0.2
  13. 13.7.39 + 4.3 = ? (a) 7.82 (b) 11.79 (c) 11.69 (d) 11.59
  14. 14.What is the value of the digit 4 in 48.631? (a) 0.04 (b) 4 (c) 0.4 (d) 40
  15. 15.2.59 + 9.3 = ? (a) 11.79 (b) 11.89 (c) 11.99 (d) 3.52
  16. 16.Which is the greatest: 0.572, 0.61, 0.054, 0.6? (a) 0.572 (b) 0.61 (c) 0.054 (d) 0.6
  17. 17.5.29 + 3.1 = ? (a) 8.29 (b) 5.6 (c) 8.39 (d) 8.49
  18. 18.8.06 + 7.1 = ? (a) 15.06 (b) 8.77 (c) 15.16 (d) 15.26
  19. 19.7.81 + 7.8 = ? (a) 15.51 (b) 15.71 (c) 8.59 (d) 15.61
  20. 20.Which is the smallest: 0.8, 0.762, 0.88, 0.048? (a) 0.8 (b) 0.762 (c) 0.88 (d) 0.048
  21. 21.Which is the smallest: 0.61, 0.6, 0.586, 0.096? (a) 0.61 (b) 0.6 (c) 0.586 (d) 0.096
  22. 22.Which is the greatest: 0.674, 0.78, 0.039, 0.7? (a) 0.674 (b) 0.78 (c) 0.039 (d) 0.7
  23. 23.1.14 + 7.4 = ? (a) 1.88 (b) 8.54 (c) 8.44 (d) 8.64
  24. 24.What is the value of the digit 1 in 87.134? (a) 1 (b) 0.01 (c) 0.1 (d) 0.001
  25. 25.Which is the greatest: 0.66, 0.6, 0.046, 0.554? (a) 0.66 (b) 0.6 (c) 0.046 (d) 0.554
  26. 26.1.82 + 3.6 = ? (a) 5.42 (b) 5.52 (c) 2.18 (d) 5.32
  27. 27.What is the value of the digit 5 in 75.981? (a) 50 (b) 0.5 (c) 0.05 (d) 5
  28. 28.What is the value of the digit 1 in 31.468? (a) 0.01 (b) 1 (c) 0.1 (d) 10
  29. 29.4.54 + 7.1 = ? (a) 5.25 (b) 11.64 (c) 11.54 (d) 11.74
  30. 30.What is the value of the digit 7 in 56.743? (a) 0.7 (b) 0.007 (c) 7 (d) 0.07
  31. 31.Which is the greatest: 0.012, 0.8, 0.84, 0.739? (a) 0.012 (b) 0.8 (c) 0.84 (d) 0.739
  32. 32.What is the value of the digit 2 in 54.792? (a) 2 (b) 0.2 (c) 0.002 (d) 0.02
  33. 33.What is the value of the digit 6 in 53.486? (a) 0.06 (b) 0.006 (c) 6 (d) 0.6
  34. 34.What is the value of the digit 7 in 98.237? (a) 0.7 (b) 0.007 (c) 0.07 (d) 7
  35. 35.Which is the smallest: 0.179, 0.2, 0.018, 0.23? (a) 0.179 (b) 0.2 (c) 0.018 (d) 0.23
  36. 36.1.21 + 8.7 = ? (a) 2.08 (b) 9.91 (c) 10.01 (d) 9.81
  37. 37.1.82 + 6.2 = ? (a) 2.44 (b) 8.12 (c) 7.92 (d) 8.02
  38. 38.What is the value of the digit 4 in 28.416? (a) 4 (b) 0.04 (c) 0.4 (d) 0.004
  39. 39.What is the value of the digit 8 in 81.263? (a) 0.08 (b) 8 (c) 80 (d) 0.8
  40. 40.What is the value of the digit 2 in 83.452? (a) 0.002 (b) 0.02 (c) 0.2 (d) 2

Answer key

  1. 4.68
  2. 16.45
  3. 0.25
  4. 6.78
  5. 0.063
  6. 0.2
  7. 6.41
  8. 10.93
  9. 0.48
  10. 13.58
  11. 11.24
  12. 0.21
  13. 11.69
  14. 40
  15. 11.89
  16. 0.61
  17. 8.39
  18. 15.16
  19. 15.61
  20. 0.048
  21. 0.096
  22. 0.78
  23. 8.54
  24. 0.1
  25. 0.66
  26. 5.42
  27. 5
  28. 1
  29. 11.64
  30. 0.7
  31. 0.84
  32. 0.002
  33. 0.006
  34. 0.007
  35. 0.018
  36. 9.91
  37. 8.02
  38. 0.4
  39. 80
  40. 0.002

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