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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 555 · 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. 1.3.01 + 6.9 = ? (a) 3.7 (b) 10.01 (c) 9.91 (d) 9.81
  2. 2.Which is the smallest: 0.024, 0.3, 0.35, 0.271? (a) 0.024 (b) 0.3 (c) 0.35 (d) 0.271
  3. 3.Which is the greatest: 0.064, 0.66, 0.528, 0.6? (a) 0.064 (b) 0.66 (c) 0.528 (d) 0.6
  4. 4.9.21 + 4.6 = ? (a) 13.91 (b) 13.81 (c) 9.67 (d) 13.71
  5. 5.6.66 + 1.9 = ? (a) 8.66 (b) 6.85 (c) 8.56 (d) 8.46
  6. 6.Which is the smallest: 0.015, 0.34, 0.3, 0.229? (a) 0.015 (b) 0.34 (c) 0.3 (d) 0.229
  7. 7.What is the value of the digit 7 in 24.179? (a) 7 (b) 0.007 (c) 0.07 (d) 0.7
  8. 8.What is the value of the digit 4 in 61.435? (a) 0.004 (b) 4 (c) 0.04 (d) 0.4
  9. 9.6.06 + 9.2 = ? (a) 6.98 (b) 15.16 (c) 15.26 (d) 15.36
  10. 10.Which is the smallest: 0.052, 0.88, 0.726, 0.8? (a) 0.052 (b) 0.88 (c) 0.726 (d) 0.8
  11. 11.6.01 + 9.5 = ? (a) 15.51 (b) 15.61 (c) 15.41 (d) 6.96
  12. 12.What is the value of the digit 5 in 58.326? (a) 5 (b) 0.5 (c) 50 (d) 0.05
  13. 13.Which is the greatest: 0.024, 0.547, 0.6, 0.64? (a) 0.024 (b) 0.547 (c) 0.6 (d) 0.64
  14. 14.Which is the greatest: 0.8, 0.773, 0.036, 0.83? (a) 0.8 (b) 0.773 (c) 0.036 (d) 0.83
  15. 15.What is the value of the digit 8 in 32.874? (a) 0.08 (b) 8 (c) 0.8 (d) 0.008
  16. 16.9.94 + 3.5 = ? (a) 13.54 (b) 13.44 (c) 13.34 (d) 10.29
  17. 17.What is the value of the digit 6 in 34.826? (a) 0.006 (b) 0.06 (c) 0.6 (d) 6
  18. 18.8.48 + 9.5 = ? (a) 18.08 (b) 17.88 (c) 9.43 (d) 17.98
  19. 19.What is the value of the digit 7 in 72.561? (a) 0.07 (b) 0.7 (c) 70 (d) 7
  20. 20.What is the value of the digit 3 in 42.983? (a) 0.003 (b) 0.3 (c) 3 (d) 0.03
  21. 21.1.23 + 6.8 = ? (a) 1.91 (b) 7.93 (c) 8.13 (d) 8.03
  22. 22.1.86 + 4.8 = ? (a) 6.66 (b) 6.76 (c) 6.56 (d) 2.34
  23. 23.What is the value of the digit 4 in 51.487? (a) 0.4 (b) 0.04 (c) 4 (d) 0.004
  24. 24.What is the value of the digit 1 in 32.416? (a) 1 (b) 0.01 (c) 0.1 (d) 0.001
  25. 25.2.41 + 2.5 = ? (a) 4.81 (b) 5.01 (c) 4.91 (d) 2.66
  26. 26.2.81 + 8.6 = ? (a) 11.41 (b) 3.67 (c) 11.51 (d) 11.31
  27. 27.Which is the smallest: 0.63, 0.029, 0.6, 0.545? (a) 0.63 (b) 0.029 (c) 0.6 (d) 0.545
  28. 28.Which is the greatest: 0.015, 0.23, 0.2, 0.174? (a) 0.015 (b) 0.23 (c) 0.2 (d) 0.174
  29. 29.Which is the greatest: 0.663, 0.79, 0.7, 0.023? (a) 0.663 (b) 0.79 (c) 0.7 (d) 0.023
  30. 30.Which is the smallest: 0.495, 0.092, 0.5, 0.58? (a) 0.495 (b) 0.092 (c) 0.5 (d) 0.58
  31. 31.What is the value of the digit 2 in 71.692? (a) 0.02 (b) 2 (c) 0.2 (d) 0.002
  32. 32.8.08 + 1.6 = ? (a) 8.24 (b) 9.78 (c) 9.58 (d) 9.68
  33. 33.Which is the smallest: 0.681, 0.038, 0.73, 0.7? (a) 0.681 (b) 0.038 (c) 0.73 (d) 0.7
  34. 34.2.69 + 5.9 = ? (a) 8.59 (b) 8.49 (c) 8.69 (d) 3.28
  35. 35.8.17 + 7.7 = ? (a) 15.77 (b) 8.94 (c) 15.97 (d) 15.87
  36. 36.Which is the greatest: 0.68, 0.018, 0.578, 0.6? (a) 0.68 (b) 0.018 (c) 0.578 (d) 0.6
  37. 37.What is the value of the digit 8 in 89.146? (a) 80 (b) 0.8 (c) 8 (d) 0.08
  38. 38.What is the value of the digit 7 in 76.423? (a) 7 (b) 0.7 (c) 0.07 (d) 70
  39. 39.Which is the smallest: 0.86, 0.034, 0.713, 0.8? (a) 0.86 (b) 0.034 (c) 0.713 (d) 0.8
  40. 40.7.82 + 6.3 = ? (a) 14.02 (b) 14.22 (c) 14.12 (d) 8.45

Answer key

  1. 9.91
  2. 0.024
  3. 0.66
  4. 13.81
  5. 8.56
  6. 0.015
  7. 0.07
  8. 0.4
  9. 15.26
  10. 0.052
  11. 15.51
  12. 50
  13. 0.64
  14. 0.83
  15. 0.8
  16. 13.44
  17. 0.006
  18. 17.98
  19. 70
  20. 0.003
  21. 8.03
  22. 6.66
  23. 0.4
  24. 0.01
  25. 4.91
  26. 11.41
  27. 0.029
  28. 0.23
  29. 0.79
  30. 0.092
  31. 0.002
  32. 9.68
  33. 0.038
  34. 8.59
  35. 15.87
  36. 0.68
  37. 80
  38. 70
  39. 0.034
  40. 14.12

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