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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 398 · 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: 0.079, 0.456, 0.5, 0.52? (a) 0.079 (b) 0.456 (c) 0.5 (d) 0.52
  2. 2.What is the value of the digit 1 in 34.971? (a) 1 (b) 0.1 (c) 0.01 (d) 0.001
  3. 3.Which is the smallest: 0.172, 0.072, 0.23, 0.2? (a) 0.172 (b) 0.072 (c) 0.23 (d) 0.2
  4. 4.Which is the greatest: 0.61, 0.6, 0.096, 0.562? (a) 0.61 (b) 0.6 (c) 0.096 (d) 0.562
  5. 5.1.12 + 6.4 = ? (a) 7.52 (b) 7.42 (c) 1.76 (d) 7.62
  6. 6.Which is the greatest: 0.656, 0.71, 0.031, 0.7? (a) 0.656 (b) 0.71 (c) 0.031 (d) 0.7
  7. 7.What is the value of the digit 1 in 69.431? (a) 0.001 (b) 0.01 (c) 1 (d) 0.1
  8. 8.What is the value of the digit 3 in 24.739? (a) 0.003 (b) 0.3 (c) 3 (d) 0.03
  9. 9.What is the value of the digit 8 in 82.516? (a) 0.08 (b) 80 (c) 8 (d) 0.8
  10. 10.8.79 + 8.6 = ? (a) 17.39 (b) 9.65 (c) 17.49 (d) 17.29
  11. 11.2.01 + 9.1 = ? (a) 11.21 (b) 2.92 (c) 11.01 (d) 11.11
  12. 12.1.41 + 7.5 = ? (a) 2.16 (b) 8.91 (c) 9.01 (d) 8.81
  13. 13.1.61 + 6.3 = ? (a) 8.01 (b) 7.91 (c) 7.81 (d) 2.24
  14. 14.8.39 + 3.5 = ? (a) 8.74 (b) 11.79 (c) 11.99 (d) 11.89
  15. 15.9.98 + 6.6 = ? (a) 16.68 (b) 16.58 (c) 16.48 (d) 10.64
  16. 16.Which is the greatest: 0.86, 0.725, 0.052, 0.8? (a) 0.86 (b) 0.725 (c) 0.052 (d) 0.8
  17. 17.What is the value of the digit 4 in 64.271? (a) 0.04 (b) 4 (c) 40 (d) 0.4
  18. 18.9.43 + 2.1 = ? (a) 9.64 (b) 11.43 (c) 11.63 (d) 11.53
  19. 19.3.72 + 5.9 = ? (a) 4.31 (b) 9.72 (c) 9.62 (d) 9.52
  20. 20.5.54 + 1.8 = ? (a) 5.72 (b) 7.44 (c) 7.34 (d) 7.24
  21. 21.What is the value of the digit 5 in 35.867? (a) 50 (b) 0.5 (c) 5 (d) 0.05
  22. 22.1.71 + 8.9 = ? (a) 10.71 (b) 2.6 (c) 10.51 (d) 10.61
  23. 23.Which is the greatest: 0.22, 0.077, 0.171, 0.2? (a) 0.22 (b) 0.077 (c) 0.171 (d) 0.2
  24. 24.6.32 + 3.9 = ? (a) 6.71 (b) 10.12 (c) 10.22 (d) 10.32
  25. 25.What is the value of the digit 9 in 67.932? (a) 0.009 (b) 0.9 (c) 0.09 (d) 9
  26. 26.1.66 + 1.2 = ? (a) 2.76 (b) 2.96 (c) 2.86 (d) 1.78
  27. 27.What is the value of the digit 2 in 72.185? (a) 20 (b) 0.02 (c) 2 (d) 0.2
  28. 28.What is the value of the digit 2 in 14.236? (a) 2 (b) 0.02 (c) 0.002 (d) 0.2
  29. 29.Which is the smallest: 0.2, 0.043, 0.26, 0.182? (a) 0.2 (b) 0.043 (c) 0.26 (d) 0.182
  30. 30.Which is the smallest: 0.39, 0.3, 0.272, 0.034? (a) 0.39 (b) 0.3 (c) 0.272 (d) 0.034
  31. 31.8.01 + 7.3 = ? (a) 15.41 (b) 15.21 (c) 8.74 (d) 15.31
  32. 32.Which is the greatest: 0.028, 0.2, 0.26, 0.173? (a) 0.028 (b) 0.2 (c) 0.26 (d) 0.173
  33. 33.What is the value of the digit 9 in 21.639? (a) 0.09 (b) 0.009 (c) 9 (d) 0.9
  34. 34.What is the value of the digit 7 in 79.618? (a) 7 (b) 0.07 (c) 0.7 (d) 70
  35. 35.5.18 + 5.9 = ? (a) 10.98 (b) 11.18 (c) 5.77 (d) 11.08
  36. 36.Which is the greatest: 0.7, 0.678, 0.086, 0.72? (a) 0.7 (b) 0.678 (c) 0.086 (d) 0.72
  37. 37.What is the value of the digit 2 in 65.728? (a) 0.002 (b) 0.02 (c) 2 (d) 0.2
  38. 38.1.97 + 1.7 = ? (a) 3.57 (b) 3.67 (c) 2.14 (d) 3.77
  39. 39.Which is the smallest: 0.83, 0.028, 0.717, 0.8? (a) 0.83 (b) 0.028 (c) 0.717 (d) 0.8
  40. 40.9.75 + 2.1 = ? (a) 11.85 (b) 11.95 (c) 9.96 (d) 11.75

Answer key

  1. 0.079
  2. 0.001
  3. 0.072
  4. 0.61
  5. 7.52
  6. 0.71
  7. 0.001
  8. 0.03
  9. 80
  10. 17.39
  11. 11.11
  12. 8.91
  13. 7.91
  14. 11.89
  15. 16.58
  16. 0.86
  17. 4
  18. 11.53
  19. 9.62
  20. 7.34
  21. 5
  22. 10.61
  23. 0.22
  24. 10.22
  25. 0.9
  26. 2.86
  27. 2
  28. 0.2
  29. 0.043
  30. 0.034
  31. 15.31
  32. 0.26
  33. 0.009
  34. 70
  35. 11.08
  36. 0.72
  37. 0.02
  38. 3.67
  39. 0.028
  40. 11.85

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