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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 813 · 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 1 in 94.713? (a) 1 (b) 0.01 (c) 0.1 (d) 0.001
  2. 2.Which is the smallest: 0.5, 0.51, 0.074, 0.474? (a) 0.5 (b) 0.51 (c) 0.074 (d) 0.474
  3. 3.Which is the greatest: 0.21, 0.172, 0.2, 0.032? (a) 0.21 (b) 0.172 (c) 0.2 (d) 0.032
  4. 4.6.15 + 1.6 = ? (a) 6.31 (b) 7.65 (c) 7.85 (d) 7.75
  5. 5.1.36 + 3.3 = ? (a) 4.56 (b) 1.69 (c) 4.66 (d) 4.76
  6. 6.Which is the smallest: 0.561, 0.69, 0.6, 0.022? (a) 0.561 (b) 0.69 (c) 0.6 (d) 0.022
  7. 7.Which is the greatest: 0.7, 0.647, 0.72, 0.066? (a) 0.7 (b) 0.647 (c) 0.72 (d) 0.066
  8. 8.Which is the smallest: 0.49, 0.336, 0.017, 0.4? (a) 0.49 (b) 0.336 (c) 0.017 (d) 0.4
  9. 9.6.96 + 3.5 = ? (a) 10.46 (b) 10.56 (c) 10.36 (d) 7.31
  10. 10.What is the value of the digit 2 in 57.123? (a) 0.02 (b) 2 (c) 0.2 (d) 0.002
  11. 11.1.39 + 5.2 = ? (a) 6.49 (b) 6.59 (c) 6.69 (d) 1.91
  12. 12.What is the value of the digit 4 in 42.815? (a) 4 (b) 0.4 (c) 0.04 (d) 40
  13. 13.2.26 + 7.7 = ? (a) 3.03 (b) 9.86 (c) 10.06 (d) 9.96
  14. 14.Which is the smallest: 0.26, 0.099, 0.173, 0.2? (a) 0.26 (b) 0.099 (c) 0.173 (d) 0.2
  15. 15.Which is the smallest: 0.759, 0.036, 0.83, 0.8? (a) 0.759 (b) 0.036 (c) 0.83 (d) 0.8
  16. 16.Which is the smallest: 0.27, 0.018, 0.115, 0.2? (a) 0.27 (b) 0.018 (c) 0.115 (d) 0.2
  17. 17.Which is the smallest: 0.34, 0.281, 0.3, 0.083? (a) 0.34 (b) 0.281 (c) 0.3 (d) 0.083
  18. 18.3.75 + 1.8 = ? (a) 5.45 (b) 3.93 (c) 5.55 (d) 5.65
  19. 19.5.23 + 5.3 = ? (a) 10.53 (b) 5.76 (c) 10.43 (d) 10.63
  20. 20.What is the value of the digit 7 in 74.312? (a) 7 (b) 70 (c) 0.07 (d) 0.7
  21. 21.9.83 + 8.8 = ? (a) 10.71 (b) 18.53 (c) 18.73 (d) 18.63
  22. 22.Which is the smallest: 0.057, 0.578, 0.65, 0.6? (a) 0.057 (b) 0.578 (c) 0.65 (d) 0.6
  23. 23.9.03 + 6.7 = ? (a) 15.63 (b) 15.73 (c) 15.83 (d) 9.7
  24. 24.Which is the greatest: 0.35, 0.052, 0.212, 0.3? (a) 0.35 (b) 0.052 (c) 0.212 (d) 0.3
  25. 25.8.39 + 2.4 = ? (a) 10.79 (b) 10.89 (c) 10.69 (d) 8.63
  26. 26.Which is the smallest: 0.41, 0.313, 0.095, 0.4? (a) 0.41 (b) 0.313 (c) 0.095 (d) 0.4
  27. 27.What is the value of the digit 2 in 23.965? (a) 0.2 (b) 20 (c) 0.02 (d) 2
  28. 28.4.12 + 8.4 = ? (a) 12.52 (b) 4.96 (c) 12.62 (d) 12.42
  29. 29.Which is the smallest: 0.086, 0.4, 0.49, 0.323? (a) 0.086 (b) 0.4 (c) 0.49 (d) 0.323
  30. 30.Which is the greatest: 0.44, 0.399, 0.4, 0.025? (a) 0.44 (b) 0.399 (c) 0.4 (d) 0.025
  31. 31.Which is the greatest: 0.67, 0.562, 0.038, 0.6? (a) 0.67 (b) 0.562 (c) 0.038 (d) 0.6
  32. 32.6.59 + 4.1 = ? (a) 10.69 (b) 10.59 (c) 7 (d) 10.79
  33. 33.What is the value of the digit 8 in 89.357? (a) 0.08 (b) 0.8 (c) 80 (d) 8
  34. 34.Which is the greatest: 0.61, 0.6, 0.051, 0.562? (a) 0.61 (b) 0.6 (c) 0.051 (d) 0.562
  35. 35.What is the value of the digit 7 in 14.287? (a) 0.7 (b) 0.07 (c) 7 (d) 0.007
  36. 36.7.66 + 9.7 = ? (a) 17.26 (b) 17.46 (c) 8.63 (d) 17.36
  37. 37.Which is the greatest: 0.053, 0.2, 0.178, 0.28? (a) 0.053 (b) 0.2 (c) 0.178 (d) 0.28
  38. 38.Which is the smallest: 0.074, 0.794, 0.87, 0.8? (a) 0.074 (b) 0.794 (c) 0.87 (d) 0.8
  39. 39.What is the value of the digit 8 in 84.357? (a) 0.08 (b) 0.8 (c) 80 (d) 8
  40. 40.8.54 + 4.8 = ? (a) 13.44 (b) 9.02 (c) 13.24 (d) 13.34

Answer key

  1. 0.01
  2. 0.074
  3. 0.21
  4. 7.75
  5. 4.66
  6. 0.022
  7. 0.72
  8. 0.017
  9. 10.46
  10. 0.02
  11. 6.59
  12. 40
  13. 9.96
  14. 0.099
  15. 0.036
  16. 0.018
  17. 0.083
  18. 5.55
  19. 10.53
  20. 70
  21. 18.63
  22. 0.057
  23. 15.73
  24. 0.35
  25. 10.79
  26. 0.095
  27. 20
  28. 12.52
  29. 0.086
  30. 0.44
  31. 0.67
  32. 10.69
  33. 80
  34. 0.61
  35. 0.007
  36. 17.36
  37. 0.28
  38. 0.074
  39. 80
  40. 13.34

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