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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 155 · 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. 1.8.04 + 7.8 = ? (a) 15.94 (b) 15.74 (c) 15.84 (d) 8.82
  2. 2.What is the value of the digit 7 in 36.792? (a) 0.7 (b) 0.007 (c) 7 (d) 0.07
  3. 3.What is the value of the digit 7 in 17.542? (a) 7 (b) 70 (c) 0.7 (d) 0.07
  4. 4.Which is the greatest: 0.437, 0.051, 0.5, 0.51? (a) 0.437 (b) 0.051 (c) 0.5 (d) 0.51
  5. 5.What is the value of the digit 5 in 72.695? (a) 0.5 (b) 5 (c) 0.05 (d) 0.005
  6. 6.Which is the smallest: 0.436, 0.061, 0.5, 0.55? (a) 0.436 (b) 0.061 (c) 0.5 (d) 0.55
  7. 7.Which is the greatest: 0.65, 0.568, 0.075, 0.6? (a) 0.65 (b) 0.568 (c) 0.075 (d) 0.6
  8. 8.What is the value of the digit 1 in 48.631? (a) 0.01 (b) 1 (c) 0.1 (d) 0.001
  9. 9.Which is the smallest: 0.3, 0.035, 0.36, 0.225? (a) 0.3 (b) 0.035 (c) 0.36 (d) 0.225
  10. 10.3.63 + 8.7 = ? (a) 12.33 (b) 12.23 (c) 4.5 (d) 12.43
  11. 11.5.37 + 2.6 = ? (a) 7.97 (b) 8.07 (c) 5.63 (d) 7.87
  12. 12.What is the value of the digit 6 in 69.231? (a) 0.06 (b) 60 (c) 0.6 (d) 6
  13. 13.What is the value of the digit 2 in 49.528? (a) 0.2 (b) 2 (c) 0.02 (d) 0.002
  14. 14.What is the value of the digit 7 in 17.596? (a) 0.7 (b) 7 (c) 0.07 (d) 70
  15. 15.1.43 + 6.1 = ? (a) 2.04 (b) 7.63 (c) 7.43 (d) 7.53
  16. 16.What is the value of the digit 3 in 19.357? (a) 0.3 (b) 0.003 (c) 0.03 (d) 3
  17. 17.7.69 + 2.1 = ? (a) 9.89 (b) 9.69 (c) 7.9 (d) 9.79
  18. 18.Which is the greatest: 0.88, 0.058, 0.723, 0.8? (a) 0.88 (b) 0.058 (c) 0.723 (d) 0.8
  19. 19.Which is the greatest: 0.59, 0.053, 0.433, 0.5? (a) 0.59 (b) 0.053 (c) 0.433 (d) 0.5
  20. 20.Which is the smallest: 0.059, 0.396, 0.4, 0.42? (a) 0.059 (b) 0.396 (c) 0.4 (d) 0.42
  21. 21.Which is the greatest: 0.41, 0.4, 0.354, 0.021? (a) 0.41 (b) 0.4 (c) 0.354 (d) 0.021
  22. 22.What is the value of the digit 6 in 87.362? (a) 0.6 (b) 0.06 (c) 0.006 (d) 6
  23. 23.3.96 + 1.5 = ? (a) 5.46 (b) 5.36 (c) 4.11 (d) 5.56
  24. 24.2.27 + 6.5 = ? (a) 8.87 (b) 2.92 (c) 8.77 (d) 8.67
  25. 25.What is the value of the digit 7 in 32.617? (a) 0.07 (b) 0.007 (c) 7 (d) 0.7
  26. 26.Which is the greatest: 0.088, 0.452, 0.56, 0.5? (a) 0.088 (b) 0.452 (c) 0.56 (d) 0.5
  27. 27.Which is the smallest: 0.2, 0.28, 0.137, 0.048? (a) 0.2 (b) 0.28 (c) 0.137 (d) 0.048
  28. 28.What is the value of the digit 3 in 46.193? (a) 0.3 (b) 0.03 (c) 3 (d) 0.003
  29. 29.What is the value of the digit 5 in 48.523? (a) 5 (b) 0.5 (c) 0.05 (d) 0.005
  30. 30.3.32 + 2.7 = ? (a) 6.12 (b) 6.02 (c) 3.59 (d) 5.92
  31. 31.What is the value of the digit 1 in 21.358? (a) 0.1 (b) 10 (c) 1 (d) 0.01
  32. 32.What is the value of the digit 9 in 91.623? (a) 0.9 (b) 9 (c) 0.09 (d) 90
  33. 33.Which is the greatest: 0.066, 0.422, 0.5, 0.55? (a) 0.066 (b) 0.422 (c) 0.5 (d) 0.55
  34. 34.9.68 + 8.1 = ? (a) 17.88 (b) 17.78 (c) 10.49 (d) 17.68
  35. 35.6.94 + 6.4 = ? (a) 13.24 (b) 13.44 (c) 13.34 (d) 7.58
  36. 36.3.47 + 9.7 = ? (a) 4.44 (b) 13.27 (c) 13.17 (d) 13.07
  37. 37.Which is the smallest: 0.169, 0.22, 0.2, 0.099? (a) 0.169 (b) 0.22 (c) 0.2 (d) 0.099
  38. 38.What is the value of the digit 6 in 67.285? (a) 60 (b) 0.06 (c) 0.6 (d) 6
  39. 39.2.01 + 5.9 = ? (a) 8.01 (b) 7.81 (c) 7.91 (d) 2.6
  40. 40.Which is the greatest: 0.074, 0.6, 0.63, 0.563? (a) 0.074 (b) 0.6 (c) 0.63 (d) 0.563

Answer key

  1. 15.84
  2. 0.7
  3. 7
  4. 0.51
  5. 0.005
  6. 0.061
  7. 0.65
  8. 0.001
  9. 0.035
  10. 12.33
  11. 7.97
  12. 60
  13. 0.02
  14. 7
  15. 7.53
  16. 0.3
  17. 9.79
  18. 0.88
  19. 0.59
  20. 0.059
  21. 0.41
  22. 0.06
  23. 5.46
  24. 8.77
  25. 0.007
  26. 0.56
  27. 0.048
  28. 0.003
  29. 0.5
  30. 6.02
  31. 1
  32. 90
  33. 0.55
  34. 17.78
  35. 13.34
  36. 13.17
  37. 0.099
  38. 60
  39. 7.91
  40. 0.63

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