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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 779 · 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: 0.376, 0.41, 0.034, 0.4? (a) 0.376 (b) 0.41 (c) 0.034 (d) 0.4
  2. 2.3.91 + 8.1 = ? (a) 12.11 (b) 12.01 (c) 11.91 (d) 4.72
  3. 3.9.75 + 3.1 = ? (a) 12.95 (b) 10.06 (c) 12.75 (d) 12.85
  4. 4.8.31 + 4.7 = ? (a) 12.91 (b) 8.78 (c) 13.01 (d) 13.11
  5. 5.3.52 + 8.1 = ? (a) 11.72 (b) 4.33 (c) 11.62 (d) 11.52
  6. 6.8.28 + 4.3 = ? (a) 12.68 (b) 8.71 (c) 12.48 (d) 12.58
  7. 7.What is the value of the digit 2 in 28.945? (a) 0.02 (b) 2 (c) 20 (d) 0.2
  8. 8.What is the value of the digit 1 in 15.736? (a) 0.01 (b) 10 (c) 1 (d) 0.1
  9. 9.What is the value of the digit 4 in 16.742? (a) 0.04 (b) 4 (c) 0.4 (d) 0.004
  10. 10.What is the value of the digit 9 in 93.461? (a) 90 (b) 0.9 (c) 0.09 (d) 9
  11. 11.2.66 + 4.4 = ? (a) 7.16 (b) 6.96 (c) 7.06 (d) 3.1
  12. 12.Which is the smallest: 0.255, 0.39, 0.3, 0.077? (a) 0.255 (b) 0.39 (c) 0.3 (d) 0.077
  13. 13.5.91 + 9.5 = ? (a) 15.51 (b) 15.41 (c) 6.86 (d) 15.31
  14. 14.Which is the smallest: 0.88, 0.737, 0.045, 0.8? (a) 0.88 (b) 0.737 (c) 0.045 (d) 0.8
  15. 15.Which is the smallest: 0.75, 0.7, 0.655, 0.041? (a) 0.75 (b) 0.7 (c) 0.655 (d) 0.041
  16. 16.6.17 + 1.1 = ? (a) 6.28 (b) 7.17 (c) 7.27 (d) 7.37
  17. 17.7.41 + 5.2 = ? (a) 7.93 (b) 12.61 (c) 12.51 (d) 12.71
  18. 18.Which is the smallest: 0.198, 0.23, 0.2, 0.016? (a) 0.198 (b) 0.23 (c) 0.2 (d) 0.016
  19. 19.Which is the smallest: 0.3, 0.226, 0.056, 0.35? (a) 0.3 (b) 0.226 (c) 0.056 (d) 0.35
  20. 20.Which is the greatest: 0.124, 0.017, 0.2, 0.28? (a) 0.124 (b) 0.017 (c) 0.2 (d) 0.28
  21. 21.5.25 + 2.7 = ? (a) 8.05 (b) 7.95 (c) 5.52 (d) 7.85
  22. 22.What is the value of the digit 7 in 79.531? (a) 7 (b) 0.7 (c) 0.07 (d) 70
  23. 23.Which is the smallest: 0.223, 0.094, 0.32, 0.3? (a) 0.223 (b) 0.094 (c) 0.32 (d) 0.3
  24. 24.Which is the smallest: 0.29, 0.171, 0.2, 0.032? (a) 0.29 (b) 0.171 (c) 0.2 (d) 0.032
  25. 25.Which is the greatest: 0.512, 0.69, 0.6, 0.079? (a) 0.512 (b) 0.69 (c) 0.6 (d) 0.079
  26. 26.2.76 + 8.9 = ? (a) 11.66 (b) 11.76 (c) 3.65 (d) 11.56
  27. 27.Which is the greatest: 0.58, 0.491, 0.056, 0.5? (a) 0.58 (b) 0.491 (c) 0.056 (d) 0.5
  28. 28.Which is the smallest: 0.526, 0.62, 0.6, 0.079? (a) 0.526 (b) 0.62 (c) 0.6 (d) 0.079
  29. 29.What is the value of the digit 3 in 12.346? (a) 0.003 (b) 0.03 (c) 0.3 (d) 3
  30. 30.2.88 + 3.7 = ? (a) 6.58 (b) 6.68 (c) 3.25 (d) 6.48
  31. 31.Which is the greatest: 0.58, 0.426, 0.5, 0.034? (a) 0.58 (b) 0.426 (c) 0.5 (d) 0.034
  32. 32.2.98 + 7.3 = ? (a) 10.28 (b) 10.18 (c) 3.71 (d) 10.38
  33. 33.What is the value of the digit 6 in 64.273? (a) 0.6 (b) 0.06 (c) 6 (d) 60
  34. 34.What is the value of the digit 9 in 27.913? (a) 9 (b) 0.9 (c) 0.009 (d) 0.09
  35. 35.What is the value of the digit 3 in 92.831? (a) 0.3 (b) 0.003 (c) 3 (d) 0.03
  36. 36.What is the value of the digit 3 in 43.985? (a) 30 (b) 3 (c) 0.3 (d) 0.03
  37. 37.1.51 + 1.1 = ? (a) 2.71 (b) 2.61 (c) 1.62 (d) 2.51
  38. 38.What is the value of the digit 6 in 12.568? (a) 0.06 (b) 0.006 (c) 0.6 (d) 6
  39. 39.What is the value of the digit 8 in 92.578? (a) 0.008 (b) 0.8 (c) 0.08 (d) 8
  40. 40.What is the value of the digit 4 in 68.425? (a) 0.4 (b) 0.04 (c) 0.004 (d) 4

Answer key

  1. 0.034
  2. 12.01
  3. 12.85
  4. 13.01
  5. 11.62
  6. 12.58
  7. 20
  8. 10
  9. 0.04
  10. 90
  11. 7.06
  12. 0.077
  13. 15.41
  14. 0.045
  15. 0.041
  16. 7.27
  17. 12.61
  18. 0.016
  19. 0.056
  20. 0.28
  21. 7.95
  22. 70
  23. 0.094
  24. 0.032
  25. 0.69
  26. 11.66
  27. 0.58
  28. 0.079
  29. 0.3
  30. 6.58
  31. 0.58
  32. 10.28
  33. 60
  34. 0.9
  35. 0.03
  36. 3
  37. 2.61
  38. 0.06
  39. 0.008
  40. 0.4

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