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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 725 · 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.What is the value of the digit 2 in 36.172? (a) 2 (b) 0.02 (c) 0.002 (d) 0.2
  2. 2.9.46 + 1.7 = ? (a) 9.63 (b) 11.16 (c) 11.06 (d) 11.26
  3. 3.What is the value of the digit 9 in 94.128? (a) 90 (b) 0.9 (c) 9 (d) 0.09
  4. 4.7.42 + 7.1 = ? (a) 14.42 (b) 14.62 (c) 14.52 (d) 8.13
  5. 5.4.52 + 8.8 = ? (a) 13.32 (b) 5.4 (c) 13.42 (d) 13.22
  6. 6.2.09 + 2.1 = ? (a) 2.3 (b) 4.19 (c) 4.29 (d) 4.09
  7. 7.Which is the greatest: 0.35, 0.223, 0.3, 0.035? (a) 0.35 (b) 0.223 (c) 0.3 (d) 0.035
  8. 8.Which is the smallest: 0.7, 0.024, 0.623, 0.72? (a) 0.7 (b) 0.024 (c) 0.623 (d) 0.72
  9. 9.2.37 + 8.9 = ? (a) 11.17 (b) 3.26 (c) 11.27 (d) 11.37
  10. 10.3.13 + 8.3 = ? (a) 3.96 (b) 11.33 (c) 11.43 (d) 11.53
  11. 11.8.68 + 3.1 = ? (a) 11.78 (b) 8.99 (c) 11.88 (d) 11.68
  12. 12.9.92 + 5.2 = ? (a) 15.12 (b) 10.44 (c) 15.22 (d) 15.02
  13. 13.What is the value of the digit 8 in 32.918? (a) 0.08 (b) 0.008 (c) 8 (d) 0.8
  14. 14.9.47 + 9.2 = ? (a) 18.57 (b) 18.67 (c) 18.77 (d) 10.39
  15. 15.What is the value of the digit 8 in 74.289? (a) 0.008 (b) 8 (c) 0.8 (d) 0.08
  16. 16.9.72 + 2.8 = ? (a) 12.62 (b) 10 (c) 12.42 (d) 12.52
  17. 17.Which is the smallest: 0.773, 0.8, 0.85, 0.053? (a) 0.773 (b) 0.8 (c) 0.85 (d) 0.053
  18. 18.Which is the smallest: 0.3, 0.34, 0.281, 0.099? (a) 0.3 (b) 0.34 (c) 0.281 (d) 0.099
  19. 19.Which is the greatest: 0.566, 0.67, 0.6, 0.041? (a) 0.566 (b) 0.67 (c) 0.6 (d) 0.041
  20. 20.What is the value of the digit 7 in 31.746? (a) 0.07 (b) 0.007 (c) 0.7 (d) 7
  21. 21.What is the value of the digit 2 in 36.912? (a) 0.02 (b) 2 (c) 0.2 (d) 0.002
  22. 22.Which is the smallest: 0.382, 0.073, 0.4, 0.46? (a) 0.382 (b) 0.073 (c) 0.4 (d) 0.46
  23. 23.Which is the smallest: 0.021, 0.23, 0.2, 0.198? (a) 0.021 (b) 0.23 (c) 0.2 (d) 0.198
  24. 24.Which is the smallest: 0.47, 0.087, 0.366, 0.4? (a) 0.47 (b) 0.087 (c) 0.366 (d) 0.4
  25. 25.Which is the greatest: 0.59, 0.467, 0.016, 0.5? (a) 0.59 (b) 0.467 (c) 0.016 (d) 0.5
  26. 26.3.06 + 5.2 = ? (a) 8.26 (b) 8.36 (c) 8.16 (d) 3.58
  27. 27.1.31 + 3.1 = ? (a) 4.51 (b) 4.31 (c) 1.62 (d) 4.41
  28. 28.What is the value of the digit 5 in 15.293? (a) 5 (b) 0.05 (c) 50 (d) 0.5
  29. 29.Which is the greatest: 0.028, 0.82, 0.8, 0.741? (a) 0.028 (b) 0.82 (c) 0.8 (d) 0.741
  30. 30.4.71 + 3.7 = ? (a) 8.51 (b) 8.31 (c) 5.08 (d) 8.41
  31. 31.What is the value of the digit 1 in 25.184? (a) 1 (b) 0.001 (c) 0.1 (d) 0.01
  32. 32.Which is the greatest: 0.078, 0.565, 0.6, 0.61? (a) 0.078 (b) 0.565 (c) 0.6 (d) 0.61
  33. 33.2.98 + 5.8 = ? (a) 8.88 (b) 8.78 (c) 3.56 (d) 8.68
  34. 34.4.98 + 5.6 = ? (a) 5.54 (b) 10.68 (c) 10.48 (d) 10.58
  35. 35.Which is the smallest: 0.121, 0.2, 0.022, 0.27? (a) 0.121 (b) 0.2 (c) 0.022 (d) 0.27
  36. 36.8.88 + 6.2 = ? (a) 9.5 (b) 15.18 (c) 14.98 (d) 15.08
  37. 37.4.51 + 7.5 = ? (a) 12.11 (b) 5.26 (c) 12.01 (d) 11.91
  38. 38.5.33 + 1.6 = ? (a) 7.03 (b) 6.93 (c) 6.83 (d) 5.49
  39. 39.Which is the greatest: 0.5, 0.59, 0.489, 0.043? (a) 0.5 (b) 0.59 (c) 0.489 (d) 0.043
  40. 40.What is the value of the digit 3 in 68.374? (a) 3 (b) 0.003 (c) 0.3 (d) 0.03

Answer key

  1. 0.002
  2. 11.16
  3. 90
  4. 14.52
  5. 13.32
  6. 4.19
  7. 0.35
  8. 0.024
  9. 11.27
  10. 11.43
  11. 11.78
  12. 15.12
  13. 0.008
  14. 18.67
  15. 0.08
  16. 12.52
  17. 0.053
  18. 0.099
  19. 0.67
  20. 0.7
  21. 0.002
  22. 0.073
  23. 0.021
  24. 0.087
  25. 0.59
  26. 8.26
  27. 4.41
  28. 5
  29. 0.82
  30. 8.41
  31. 0.1
  32. 0.61
  33. 8.78
  34. 10.58
  35. 0.022
  36. 15.08
  37. 12.01
  38. 6.93
  39. 0.59
  40. 0.3

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