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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 816 · 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. 1.3.58 + 3.5 = ? (a) 3.93 (b) 7.08 (c) 6.98 (d) 7.18
  2. 2.Which is the smallest: 0.431, 0.58, 0.019, 0.5? (a) 0.431 (b) 0.58 (c) 0.019 (d) 0.5
  3. 3.2.73 + 1.4 = ? (a) 4.13 (b) 4.23 (c) 4.03 (d) 2.87
  4. 4.1.36 + 2.1 = ? (a) 3.36 (b) 3.46 (c) 3.56 (d) 1.57
  5. 5.2.82 + 7.9 = ? (a) 3.61 (b) 10.82 (c) 10.62 (d) 10.72
  6. 6.5.89 + 2.7 = ? (a) 8.69 (b) 8.59 (c) 6.16 (d) 8.49
  7. 7.4.15 + 8.9 = ? (a) 12.95 (b) 5.04 (c) 13.05 (d) 13.15
  8. 8.1.55 + 3.3 = ? (a) 4.95 (b) 4.85 (c) 4.75 (d) 1.88
  9. 9.What is the value of the digit 8 in 84.632? (a) 80 (b) 0.8 (c) 8 (d) 0.08
  10. 10.What is the value of the digit 1 in 12.638? (a) 0.1 (b) 0.01 (c) 1 (d) 10
  11. 11.Which is the greatest: 0.8, 0.066, 0.778, 0.86? (a) 0.8 (b) 0.066 (c) 0.778 (d) 0.86
  12. 12.Which is the smallest: 0.73, 0.057, 0.7, 0.651? (a) 0.73 (b) 0.057 (c) 0.7 (d) 0.651
  13. 13.What is the value of the digit 3 in 81.734? (a) 0.3 (b) 0.03 (c) 0.003 (d) 3
  14. 14.8.63 + 2.4 = ? (a) 11.03 (b) 8.87 (c) 10.93 (d) 11.13
  15. 15.What is the value of the digit 6 in 58.316? (a) 0.6 (b) 0.06 (c) 0.006 (d) 6
  16. 16.2.39 + 1.3 = ? (a) 2.52 (b) 3.79 (c) 3.69 (d) 3.59
  17. 17.2.47 + 5.4 = ? (a) 7.97 (b) 7.77 (c) 7.87 (d) 3.01
  18. 18.What is the value of the digit 8 in 21.584? (a) 0.008 (b) 0.8 (c) 0.08 (d) 8
  19. 19.What is the value of the digit 6 in 16.452? (a) 0.06 (b) 6 (c) 60 (d) 0.6
  20. 20.Which is the greatest: 0.153, 0.22, 0.2, 0.012? (a) 0.153 (b) 0.22 (c) 0.2 (d) 0.012
  21. 21.Which is the greatest: 0.7, 0.617, 0.011, 0.76? (a) 0.7 (b) 0.617 (c) 0.011 (d) 0.76
  22. 22.Which is the greatest: 0.399, 0.41, 0.4, 0.081? (a) 0.399 (b) 0.41 (c) 0.4 (d) 0.081
  23. 23.4.32 + 8.3 = ? (a) 5.15 (b) 12.62 (c) 12.72 (d) 12.52
  24. 24.What is the value of the digit 9 in 35.971? (a) 0.9 (b) 0.09 (c) 9 (d) 0.009
  25. 25.Which is the greatest: 0.034, 0.687, 0.7, 0.75? (a) 0.034 (b) 0.687 (c) 0.7 (d) 0.75
  26. 26.Which is the smallest: 0.691, 0.7, 0.79, 0.053? (a) 0.691 (b) 0.7 (c) 0.79 (d) 0.053
  27. 27.9.55 + 2.3 = ? (a) 11.95 (b) 11.75 (c) 11.85 (d) 9.78
  28. 28.2.04 + 5.7 = ? (a) 7.64 (b) 7.84 (c) 7.74 (d) 2.61
  29. 29.Which is the smallest: 0.097, 0.53, 0.5, 0.422? (a) 0.097 (b) 0.53 (c) 0.5 (d) 0.422
  30. 30.Which is the greatest: 0.27, 0.2, 0.039, 0.112? (a) 0.27 (b) 0.2 (c) 0.039 (d) 0.112
  31. 31.8.97 + 8.3 = ? (a) 9.8 (b) 17.27 (c) 17.17 (d) 17.37
  32. 32.5.64 + 8.7 = ? (a) 14.44 (b) 6.51 (c) 14.34 (d) 14.24
  33. 33.What is the value of the digit 3 in 23.864? (a) 0.3 (b) 30 (c) 3 (d) 0.03
  34. 34.1.19 + 2.1 = ? (a) 3.39 (b) 1.4 (c) 3.19 (d) 3.29
  35. 35.8.34 + 4.9 = ? (a) 8.83 (b) 13.14 (c) 13.24 (d) 13.34
  36. 36.What is the value of the digit 9 in 97.523? (a) 0.9 (b) 90 (c) 0.09 (d) 9
  37. 37.6.67 + 2.5 = ? (a) 6.92 (b) 9.07 (c) 9.27 (d) 9.17
  38. 38.8.39 + 1.3 = ? (a) 9.79 (b) 8.52 (c) 9.69 (d) 9.59
  39. 39.Which is the smallest: 0.471, 0.53, 0.026, 0.5? (a) 0.471 (b) 0.53 (c) 0.026 (d) 0.5
  40. 40.Which is the smallest: 0.117, 0.21, 0.2, 0.082? (a) 0.117 (b) 0.21 (c) 0.2 (d) 0.082

Answer key

  1. 7.08
  2. 0.019
  3. 4.13
  4. 3.46
  5. 10.72
  6. 8.59
  7. 13.05
  8. 4.85
  9. 80
  10. 10
  11. 0.86
  12. 0.057
  13. 0.03
  14. 11.03
  15. 0.006
  16. 3.69
  17. 7.87
  18. 0.08
  19. 6
  20. 0.22
  21. 0.76
  22. 0.41
  23. 12.62
  24. 0.9
  25. 0.75
  26. 0.053
  27. 11.85
  28. 7.74
  29. 0.097
  30. 0.27
  31. 17.27
  32. 14.34
  33. 3
  34. 3.29
  35. 13.24
  36. 90
  37. 9.17
  38. 9.69
  39. 0.026
  40. 0.082

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