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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 905 · 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.Which is the smallest: 0.432, 0.024, 0.51, 0.5? (a) 0.432 (b) 0.024 (c) 0.51 (d) 0.5
  2. 2.3.61 + 5.4 = ? (a) 8.91 (b) 4.15 (c) 9.11 (d) 9.01
  3. 3.1.31 + 7.4 = ? (a) 8.71 (b) 8.61 (c) 8.81 (d) 2.05
  4. 4.What is the value of the digit 9 in 18.925? (a) 0.09 (b) 0.009 (c) 9 (d) 0.9
  5. 5.What is the value of the digit 5 in 65.894? (a) 0.5 (b) 50 (c) 5 (d) 0.05
  6. 6.What is the value of the digit 1 in 19.583? (a) 1 (b) 0.01 (c) 10 (d) 0.1
  7. 7.3.41 + 8.1 = ? (a) 11.41 (b) 11.51 (c) 4.22 (d) 11.61
  8. 8.Which is the greatest: 0.262, 0.33, 0.089, 0.3? (a) 0.262 (b) 0.33 (c) 0.089 (d) 0.3
  9. 9.What is the value of the digit 7 in 27.983? (a) 0.7 (b) 0.07 (c) 70 (d) 7
  10. 10.1.52 + 2.1 = ? (a) 3.52 (b) 3.62 (c) 3.72 (d) 1.73
  11. 11.What is the value of the digit 6 in 69.437? (a) 6 (b) 0.6 (c) 0.06 (d) 60
  12. 12.Which is the greatest: 0.72, 0.694, 0.014, 0.7? (a) 0.72 (b) 0.694 (c) 0.014 (d) 0.7
  13. 13.What is the value of the digit 4 in 42.617? (a) 0.04 (b) 0.4 (c) 4 (d) 40
  14. 14.Which is the greatest: 0.074, 0.127, 0.2, 0.22? (a) 0.074 (b) 0.127 (c) 0.2 (d) 0.22
  15. 15.Which is the smallest: 0.5, 0.081, 0.51, 0.469? (a) 0.5 (b) 0.081 (c) 0.51 (d) 0.469
  16. 16.Which is the greatest: 0.5, 0.428, 0.57, 0.054? (a) 0.5 (b) 0.428 (c) 0.57 (d) 0.054
  17. 17.What is the value of the digit 3 in 87.369? (a) 0.3 (b) 3 (c) 0.03 (d) 0.003
  18. 18.What is the value of the digit 5 in 82.591? (a) 5 (b) 0.5 (c) 0.005 (d) 0.05
  19. 19.What is the value of the digit 5 in 83.579? (a) 0.05 (b) 0.5 (c) 5 (d) 0.005
  20. 20.What is the value of the digit 5 in 18.945? (a) 5 (b) 0.005 (c) 0.5 (d) 0.05
  21. 21.What is the value of the digit 8 in 57.382? (a) 0.008 (b) 0.8 (c) 8 (d) 0.08
  22. 22.6.63 + 4.7 = ? (a) 11.23 (b) 11.33 (c) 7.1 (d) 11.43
  23. 23.7.87 + 9.1 = ? (a) 17.07 (b) 16.87 (c) 8.78 (d) 16.97
  24. 24.Which is the smallest: 0.066, 0.3, 0.32, 0.222? (a) 0.066 (b) 0.3 (c) 0.32 (d) 0.222
  25. 25.Which is the greatest: 0.85, 0.792, 0.015, 0.8? (a) 0.85 (b) 0.792 (c) 0.015 (d) 0.8
  26. 26.What is the value of the digit 8 in 84.961? (a) 0.8 (b) 0.08 (c) 80 (d) 8
  27. 27.4.13 + 3.5 = ? (a) 7.73 (b) 4.48 (c) 7.63 (d) 7.53
  28. 28.6.24 + 2.1 = ? (a) 8.24 (b) 8.34 (c) 6.45 (d) 8.44
  29. 29.Which is the greatest: 0.266, 0.38, 0.088, 0.3? (a) 0.266 (b) 0.38 (c) 0.088 (d) 0.3
  30. 30.4.54 + 2.1 = ? (a) 6.64 (b) 6.54 (c) 6.74 (d) 4.75
  31. 31.7.92 + 2.3 = ? (a) 10.32 (b) 10.12 (c) 8.15 (d) 10.22
  32. 32.Which is the greatest: 0.5, 0.458, 0.043, 0.54? (a) 0.5 (b) 0.458 (c) 0.043 (d) 0.54
  33. 33.2.68 + 6.2 = ? (a) 3.3 (b) 8.78 (c) 8.88 (d) 8.98
  34. 34.7.64 + 3.4 = ? (a) 11.14 (b) 10.94 (c) 7.98 (d) 11.04
  35. 35.8.81 + 9.1 = ? (a) 18.01 (b) 9.72 (c) 17.81 (d) 17.91
  36. 36.Which is the greatest: 0.28, 0.2, 0.039, 0.136? (a) 0.28 (b) 0.2 (c) 0.039 (d) 0.136
  37. 37.9.88 + 4.5 = ? (a) 14.48 (b) 14.38 (c) 10.33 (d) 14.28
  38. 38.5.61 + 1.2 = ? (a) 6.91 (b) 6.71 (c) 5.73 (d) 6.81
  39. 39.What is the value of the digit 4 in 26.741? (a) 0.04 (b) 0.004 (c) 4 (d) 0.4
  40. 40.8.46 + 7.8 = ? (a) 16.36 (b) 16.16 (c) 9.24 (d) 16.26

Answer key

  1. 0.024
  2. 9.01
  3. 8.71
  4. 0.9
  5. 5
  6. 10
  7. 11.51
  8. 0.33
  9. 7
  10. 3.62
  11. 60
  12. 0.72
  13. 40
  14. 0.22
  15. 0.081
  16. 0.57
  17. 0.3
  18. 0.5
  19. 0.5
  20. 0.005
  21. 0.08
  22. 11.33
  23. 16.97
  24. 0.066
  25. 0.85
  26. 80
  27. 7.63
  28. 8.34
  29. 0.38
  30. 6.64
  31. 10.22
  32. 0.54
  33. 8.88
  34. 11.04
  35. 17.91
  36. 0.28
  37. 14.38
  38. 6.81
  39. 0.04
  40. 16.26

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