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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 147 · 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 greatest: 0.55, 0.5, 0.485, 0.057? (a) 0.55 (b) 0.5 (c) 0.485 (d) 0.057
  2. 2.Which is the greatest: 0.036, 0.724, 0.8, 0.88? (a) 0.036 (b) 0.724 (c) 0.8 (d) 0.88
  3. 3.7.65 + 6.8 = ? (a) 8.33 (b) 14.55 (c) 14.35 (d) 14.45
  4. 4.Which is the greatest: 0.26, 0.079, 0.2, 0.153? (a) 0.26 (b) 0.079 (c) 0.2 (d) 0.153
  5. 5.Which is the smallest: 0.037, 0.35, 0.3, 0.247? (a) 0.037 (b) 0.35 (c) 0.3 (d) 0.247
  6. 6.What is the value of the digit 9 in 79.516? (a) 0.9 (b) 9 (c) 0.09 (d) 90
  7. 7.Which is the smallest: 0.2, 0.23, 0.161, 0.091? (a) 0.2 (b) 0.23 (c) 0.161 (d) 0.091
  8. 8.Which is the greatest: 0.228, 0.3, 0.31, 0.012? (a) 0.228 (b) 0.3 (c) 0.31 (d) 0.012
  9. 9.What is the value of the digit 5 in 95.261? (a) 0.5 (b) 50 (c) 0.05 (d) 5
  10. 10.8.98 + 4.3 = ? (a) 9.41 (b) 13.28 (c) 13.38 (d) 13.18
  11. 11.Which is the greatest: 0.69, 0.076, 0.518, 0.6? (a) 0.69 (b) 0.076 (c) 0.518 (d) 0.6
  12. 12.Which is the smallest: 0.358, 0.49, 0.021, 0.4? (a) 0.358 (b) 0.49 (c) 0.021 (d) 0.4
  13. 13.Which is the greatest: 0.066, 0.7, 0.73, 0.679? (a) 0.066 (b) 0.7 (c) 0.73 (d) 0.679
  14. 14.Which is the greatest: 0.4, 0.43, 0.359, 0.062? (a) 0.4 (b) 0.43 (c) 0.359 (d) 0.062
  15. 15.Which is the smallest: 0.065, 0.418, 0.5, 0.53? (a) 0.065 (b) 0.418 (c) 0.5 (d) 0.53
  16. 16.8.51 + 3.2 = ? (a) 8.83 (b) 11.81 (c) 11.61 (d) 11.71
  17. 17.Which is the greatest: 0.64, 0.076, 0.598, 0.6? (a) 0.64 (b) 0.076 (c) 0.598 (d) 0.6
  18. 18.What is the value of the digit 7 in 72.936? (a) 7 (b) 0.07 (c) 70 (d) 0.7
  19. 19.9.14 + 9.8 = ? (a) 10.12 (b) 18.84 (c) 19.04 (d) 18.94
  20. 20.9.55 + 2.3 = ? (a) 9.78 (b) 11.75 (c) 11.85 (d) 11.95
  21. 21.3.63 + 7.4 = ? (a) 4.37 (b) 11.13 (c) 10.93 (d) 11.03
  22. 22.Which is the smallest: 0.3, 0.053, 0.298, 0.32? (a) 0.3 (b) 0.053 (c) 0.298 (d) 0.32
  23. 23.1.92 + 8.6 = ? (a) 10.52 (b) 10.62 (c) 10.42 (d) 2.78
  24. 24.Which is the greatest: 0.289, 0.36, 0.082, 0.3? (a) 0.289 (b) 0.36 (c) 0.082 (d) 0.3
  25. 25.Which is the greatest: 0.086, 0.464, 0.5, 0.52? (a) 0.086 (b) 0.464 (c) 0.5 (d) 0.52
  26. 26.5.21 + 6.7 = ? (a) 11.91 (b) 12.01 (c) 5.88 (d) 11.81
  27. 27.6.57 + 1.1 = ? (a) 6.68 (b) 7.57 (c) 7.77 (d) 7.67
  28. 28.5.25 + 8.9 = ? (a) 6.14 (b) 14.05 (c) 14.15 (d) 14.25
  29. 29.What is the value of the digit 4 in 74.931? (a) 0.04 (b) 40 (c) 4 (d) 0.4
  30. 30.4.15 + 9.1 = ? (a) 13.15 (b) 13.25 (c) 13.35 (d) 5.06
  31. 31.What is the value of the digit 1 in 14.795? (a) 0.1 (b) 10 (c) 0.01 (d) 1
  32. 32.Which is the smallest: 0.4, 0.015, 0.41, 0.316? (a) 0.4 (b) 0.015 (c) 0.41 (d) 0.316
  33. 33.1.64 + 1.5 = ? (a) 1.79 (b) 3.24 (c) 3.04 (d) 3.14
  34. 34.5.11 + 2.4 = ? (a) 5.35 (b) 7.51 (c) 7.41 (d) 7.61
  35. 35.What is the value of the digit 7 in 41.827? (a) 0.7 (b) 7 (c) 0.007 (d) 0.07
  36. 36.5.89 + 6.3 = ? (a) 12.09 (b) 12.29 (c) 6.52 (d) 12.19
  37. 37.Which is the greatest: 0.054, 0.3, 0.244, 0.34? (a) 0.054 (b) 0.3 (c) 0.244 (d) 0.34
  38. 38.6.34 + 7.4 = ? (a) 13.84 (b) 7.08 (c) 13.64 (d) 13.74
  39. 39.Which is the smallest: 0.367, 0.49, 0.077, 0.4? (a) 0.367 (b) 0.49 (c) 0.077 (d) 0.4
  40. 40.Which is the smallest: 0.37, 0.266, 0.3, 0.051? (a) 0.37 (b) 0.266 (c) 0.3 (d) 0.051

Answer key

  1. 0.55
  2. 0.88
  3. 14.45
  4. 0.26
  5. 0.037
  6. 9
  7. 0.091
  8. 0.31
  9. 5
  10. 13.28
  11. 0.69
  12. 0.021
  13. 0.73
  14. 0.43
  15. 0.065
  16. 11.71
  17. 0.64
  18. 70
  19. 18.94
  20. 11.85
  21. 11.03
  22. 0.053
  23. 10.52
  24. 0.36
  25. 0.52
  26. 11.91
  27. 7.67
  28. 14.15
  29. 4
  30. 13.25
  31. 10
  32. 0.015
  33. 3.14
  34. 7.51
  35. 0.007
  36. 12.19
  37. 0.34
  38. 13.74
  39. 0.077
  40. 0.051

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