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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 865 · 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. 1.4.28 + 2.1 = ? (a) 6.28 (b) 4.49 (c) 6.38 (d) 6.48
  2. 2.What is the value of the digit 4 in 14.653? (a) 0.4 (b) 4 (c) 40 (d) 0.04
  3. 3.Which is the smallest: 0.568, 0.6, 0.078, 0.62? (a) 0.568 (b) 0.6 (c) 0.078 (d) 0.62
  4. 4.Which is the greatest: 0.59, 0.415, 0.5, 0.059? (a) 0.59 (b) 0.415 (c) 0.5 (d) 0.059
  5. 5.2.15 + 8.4 = ? (a) 2.99 (b) 10.45 (c) 10.65 (d) 10.55
  6. 6.3.33 + 5.3 = ? (a) 3.86 (b) 8.73 (c) 8.53 (d) 8.63
  7. 7.Which is the smallest: 0.713, 0.028, 0.8, 0.82? (a) 0.713 (b) 0.028 (c) 0.8 (d) 0.82
  8. 8.Which is the greatest: 0.2, 0.069, 0.192, 0.23? (a) 0.2 (b) 0.069 (c) 0.192 (d) 0.23
  9. 9.6.41 + 9.7 = ? (a) 7.38 (b) 16.21 (c) 16.11 (d) 16.01
  10. 10.What is the value of the digit 1 in 67.134? (a) 0.001 (b) 1 (c) 0.01 (d) 0.1
  11. 11.8.36 + 2.8 = ? (a) 11.16 (b) 11.06 (c) 11.26 (d) 8.64
  12. 12.6.14 + 3.8 = ? (a) 10.04 (b) 6.52 (c) 9.84 (d) 9.94
  13. 13.What is the value of the digit 6 in 63.271? (a) 60 (b) 6 (c) 0.6 (d) 0.06
  14. 14.Which is the greatest: 0.053, 0.367, 0.4, 0.48? (a) 0.053 (b) 0.367 (c) 0.4 (d) 0.48
  15. 15.1.82 + 3.3 = ? (a) 2.15 (b) 5.12 (c) 5.22 (d) 5.02
  16. 16.Which is the greatest: 0.293, 0.35, 0.3, 0.013? (a) 0.293 (b) 0.35 (c) 0.3 (d) 0.013
  17. 17.Which is the smallest: 0.633, 0.7, 0.72, 0.073? (a) 0.633 (b) 0.7 (c) 0.72 (d) 0.073
  18. 18.What is the value of the digit 3 in 15.293? (a) 0.3 (b) 0.003 (c) 3 (d) 0.03
  19. 19.Which is the greatest: 0.059, 0.226, 0.31, 0.3? (a) 0.059 (b) 0.226 (c) 0.31 (d) 0.3
  20. 20.Which is the smallest: 0.051, 0.69, 0.6, 0.584? (a) 0.051 (b) 0.69 (c) 0.6 (d) 0.584
  21. 21.Which is the smallest: 0.076, 0.691, 0.79, 0.7? (a) 0.076 (b) 0.691 (c) 0.79 (d) 0.7
  22. 22.4.76 + 1.8 = ? (a) 6.46 (b) 4.94 (c) 6.66 (d) 6.56
  23. 23.6.37 + 7.1 = ? (a) 13.57 (b) 7.08 (c) 13.37 (d) 13.47
  24. 24.8.31 + 2.1 = ? (a) 10.41 (b) 8.52 (c) 10.51 (d) 10.31
  25. 25.What is the value of the digit 4 in 62.415? (a) 4 (b) 0.04 (c) 0.004 (d) 0.4
  26. 26.What is the value of the digit 5 in 23.845? (a) 0.005 (b) 0.05 (c) 5 (d) 0.5
  27. 27.2.31 + 5.8 = ? (a) 2.89 (b) 8.21 (c) 8.01 (d) 8.11
  28. 28.Which is the smallest: 0.4, 0.47, 0.311, 0.024? (a) 0.4 (b) 0.47 (c) 0.311 (d) 0.024
  29. 29.What is the value of the digit 6 in 51.963? (a) 0.06 (b) 0.006 (c) 6 (d) 0.6
  30. 30.5.62 + 6.7 = ? (a) 12.22 (b) 12.32 (c) 6.29 (d) 12.42
  31. 31.Which is the smallest: 0.087, 0.115, 0.29, 0.2? (a) 0.087 (b) 0.115 (c) 0.29 (d) 0.2
  32. 32.7.74 + 3.6 = ? (a) 8.1 (b) 11.34 (c) 11.44 (d) 11.24
  33. 33.9.58 + 9.6 = ? (a) 19.28 (b) 10.54 (c) 19.08 (d) 19.18
  34. 34.Which is the smallest: 0.2, 0.26, 0.157, 0.088? (a) 0.2 (b) 0.26 (c) 0.157 (d) 0.088
  35. 35.5.29 + 8.1 = ? (a) 6.1 (b) 13.49 (c) 13.39 (d) 13.29
  36. 36.What is the value of the digit 1 in 49.712? (a) 1 (b) 0.1 (c) 0.001 (d) 0.01
  37. 37.4.28 + 7.1 = ? (a) 11.28 (b) 4.99 (c) 11.48 (d) 11.38
  38. 38.7.18 + 2.8 = ? (a) 10.08 (b) 7.46 (c) 9.98 (d) 9.88
  39. 39.Which is the greatest: 0.21, 0.2, 0.087, 0.163? (a) 0.21 (b) 0.2 (c) 0.087 (d) 0.163
  40. 40.4.85 + 2.2 = ? (a) 7.05 (b) 6.95 (c) 5.07 (d) 7.15

Answer key

  1. 6.38
  2. 4
  3. 0.078
  4. 0.59
  5. 10.55
  6. 8.63
  7. 0.028
  8. 0.23
  9. 16.11
  10. 0.1
  11. 11.16
  12. 9.94
  13. 60
  14. 0.48
  15. 5.12
  16. 0.35
  17. 0.073
  18. 0.003
  19. 0.31
  20. 0.051
  21. 0.076
  22. 6.56
  23. 13.47
  24. 10.41
  25. 0.4
  26. 0.005
  27. 8.11
  28. 0.024
  29. 0.06
  30. 12.32
  31. 0.087
  32. 11.34
  33. 19.18
  34. 0.088
  35. 13.39
  36. 0.01
  37. 11.38
  38. 9.98
  39. 0.21
  40. 7.05

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