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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 327 · 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. 1.2.79 + 6.7 = ? (a) 9.59 (b) 3.46 (c) 9.49 (d) 9.39
  2. 2.5.52 + 5.8 = ? (a) 11.42 (b) 11.32 (c) 6.1 (d) 11.22
  3. 3.2.44 + 9.4 = ? (a) 11.74 (b) 11.84 (c) 3.38 (d) 11.94
  4. 4.What is the value of the digit 3 in 67.213? (a) 0.3 (b) 3 (c) 0.003 (d) 0.03
  5. 5.6.59 + 9.7 = ? (a) 16.39 (b) 16.29 (c) 16.19 (d) 7.56
  6. 6.Which is the smallest: 0.5, 0.58, 0.451, 0.076? (a) 0.5 (b) 0.58 (c) 0.451 (d) 0.076
  7. 7.Which is the smallest: 0.035, 0.374, 0.41, 0.4? (a) 0.035 (b) 0.374 (c) 0.41 (d) 0.4
  8. 8.What is the value of the digit 7 in 43.716? (a) 0.07 (b) 7 (c) 0.7 (d) 0.007
  9. 9.Which is the smallest: 0.062, 0.576, 0.62, 0.6? (a) 0.062 (b) 0.576 (c) 0.62 (d) 0.6
  10. 10.Which is the smallest: 0.39, 0.012, 0.3, 0.267? (a) 0.39 (b) 0.012 (c) 0.3 (d) 0.267
  11. 11.3.24 + 9.2 = ? (a) 12.44 (b) 12.54 (c) 4.16 (d) 12.34
  12. 12.Which is the greatest: 0.63, 0.554, 0.089, 0.6? (a) 0.63 (b) 0.554 (c) 0.089 (d) 0.6
  13. 13.What is the value of the digit 8 in 28.794? (a) 80 (b) 8 (c) 0.08 (d) 0.8
  14. 14.Which is the smallest: 0.065, 0.8, 0.788, 0.85? (a) 0.065 (b) 0.8 (c) 0.788 (d) 0.85
  15. 15.What is the value of the digit 8 in 38.461? (a) 0.08 (b) 0.8 (c) 80 (d) 8
  16. 16.1.91 + 3.1 = ? (a) 5.01 (b) 5.11 (c) 4.91 (d) 2.22
  17. 17.Which is the smallest: 0.141, 0.041, 0.22, 0.2? (a) 0.141 (b) 0.041 (c) 0.22 (d) 0.2
  18. 18.7.91 + 4.8 = ? (a) 8.39 (b) 12.71 (c) 12.81 (d) 12.61
  19. 19.What is the value of the digit 3 in 71.389? (a) 3 (b) 0.003 (c) 0.03 (d) 0.3
  20. 20.4.69 + 4.1 = ? (a) 8.89 (b) 8.79 (c) 5.1 (d) 8.69
  21. 21.What is the value of the digit 1 in 79.162? (a) 0.1 (b) 1 (c) 0.01 (d) 0.001
  22. 22.What is the value of the digit 3 in 23.481? (a) 30 (b) 3 (c) 0.3 (d) 0.03
  23. 23.What is the value of the digit 5 in 76.852? (a) 0.05 (b) 0.005 (c) 0.5 (d) 5
  24. 24.Which is the smallest: 0.142, 0.053, 0.26, 0.2? (a) 0.142 (b) 0.053 (c) 0.26 (d) 0.2
  25. 25.What is the value of the digit 4 in 27.415? (a) 0.4 (b) 0.04 (c) 0.004 (d) 4
  26. 26.What is the value of the digit 2 in 34.251? (a) 0.002 (b) 0.2 (c) 0.02 (d) 2
  27. 27.Which is the greatest: 0.64, 0.526, 0.048, 0.6? (a) 0.64 (b) 0.526 (c) 0.048 (d) 0.6
  28. 28.What is the value of the digit 1 in 34.981? (a) 1 (b) 0.01 (c) 0.001 (d) 0.1
  29. 29.3.31 + 1.4 = ? (a) 3.45 (b) 4.61 (c) 4.71 (d) 4.81
  30. 30.Which is the greatest: 0.24, 0.041, 0.2, 0.154? (a) 0.24 (b) 0.041 (c) 0.2 (d) 0.154
  31. 31.1.54 + 3.1 = ? (a) 4.54 (b) 1.85 (c) 4.64 (d) 4.74
  32. 32.What is the value of the digit 9 in 81.629? (a) 9 (b) 0.09 (c) 0.9 (d) 0.009
  33. 33.Which is the smallest: 0.42, 0.326, 0.015, 0.4? (a) 0.42 (b) 0.326 (c) 0.015 (d) 0.4
  34. 34.What is the value of the digit 3 in 96.473? (a) 0.3 (b) 0.003 (c) 3 (d) 0.03
  35. 35.Which is the greatest: 0.24, 0.076, 0.2, 0.118? (a) 0.24 (b) 0.076 (c) 0.2 (d) 0.118
  36. 36.What is the value of the digit 1 in 81.527? (a) 0.01 (b) 1 (c) 10 (d) 0.1
  37. 37.What is the value of the digit 6 in 74.961? (a) 0.6 (b) 0.06 (c) 6 (d) 0.006
  38. 38.2.45 + 7.1 = ? (a) 9.55 (b) 3.16 (c) 9.65 (d) 9.45
  39. 39.Which is the smallest: 0.211, 0.042, 0.35, 0.3? (a) 0.211 (b) 0.042 (c) 0.35 (d) 0.3
  40. 40.What is the value of the digit 9 in 46.195? (a) 0.009 (b) 9 (c) 0.9 (d) 0.09

Answer key

  1. 9.49
  2. 11.32
  3. 11.84
  4. 0.003
  5. 16.29
  6. 0.076
  7. 0.035
  8. 0.7
  9. 0.062
  10. 0.012
  11. 12.44
  12. 0.63
  13. 8
  14. 0.065
  15. 8
  16. 5.01
  17. 0.041
  18. 12.71
  19. 0.3
  20. 8.79
  21. 0.1
  22. 3
  23. 0.05
  24. 0.053
  25. 0.4
  26. 0.2
  27. 0.64
  28. 0.001
  29. 4.71
  30. 0.24
  31. 4.64
  32. 0.009
  33. 0.015
  34. 0.003
  35. 0.24
  36. 1
  37. 0.06
  38. 9.55
  39. 0.042
  40. 0.09

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