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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 677 · 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. 1.9.02 + 8.2 = ? (a) 9.84 (b) 17.12 (c) 17.22 (d) 17.32
  2. 2.What is the value of the digit 8 in 46.918? (a) 8 (b) 0.8 (c) 0.008 (d) 0.08
  3. 3.3.81 + 5.9 = ? (a) 9.61 (b) 9.71 (c) 4.4 (d) 9.81
  4. 4.5.14 + 3.7 = ? (a) 8.74 (b) 8.94 (c) 5.51 (d) 8.84
  5. 5.3.19 + 5.6 = ? (a) 8.79 (b) 8.89 (c) 3.75 (d) 8.69
  6. 6.What is the value of the digit 8 in 92.485? (a) 0.008 (b) 8 (c) 0.08 (d) 0.8
  7. 7.4.57 + 2.5 = ? (a) 4.82 (b) 7.07 (c) 6.97 (d) 7.17
  8. 8.2.46 + 1.3 = ? (a) 3.66 (b) 2.59 (c) 3.86 (d) 3.76
  9. 9.2.61 + 1.6 = ? (a) 4.31 (b) 4.21 (c) 4.11 (d) 2.77
  10. 10.What is the value of the digit 1 in 61.834? (a) 0.1 (b) 10 (c) 1 (d) 0.01
  11. 11.What is the value of the digit 1 in 64.721? (a) 0.01 (b) 0.001 (c) 0.1 (d) 1
  12. 12.Which is the greatest: 0.6, 0.588, 0.031, 0.67? (a) 0.6 (b) 0.588 (c) 0.031 (d) 0.67
  13. 13.Which is the greatest: 0.33, 0.288, 0.3, 0.039? (a) 0.33 (b) 0.288 (c) 0.3 (d) 0.039
  14. 14.What is the value of the digit 6 in 49.261? (a) 0.006 (b) 6 (c) 0.06 (d) 0.6
  15. 15.1.37 + 3.2 = ? (a) 4.67 (b) 1.69 (c) 4.57 (d) 4.47
  16. 16.What is the value of the digit 6 in 34.621? (a) 6 (b) 0.06 (c) 0.6 (d) 0.006
  17. 17.1.35 + 7.1 = ? (a) 2.06 (b) 8.55 (c) 8.35 (d) 8.45
  18. 18.Which is the smallest: 0.561, 0.6, 0.062, 0.68? (a) 0.561 (b) 0.6 (c) 0.062 (d) 0.68
  19. 19.What is the value of the digit 3 in 13.847? (a) 30 (b) 0.03 (c) 0.3 (d) 3
  20. 20.Which is the smallest: 0.75, 0.621, 0.7, 0.073? (a) 0.75 (b) 0.621 (c) 0.7 (d) 0.073
  21. 21.1.89 + 6.3 = ? (a) 8.09 (b) 8.29 (c) 2.52 (d) 8.19
  22. 22.Which is the greatest: 0.47, 0.341, 0.054, 0.4? (a) 0.47 (b) 0.341 (c) 0.054 (d) 0.4
  23. 23.What is the value of the digit 8 in 43.872? (a) 0.08 (b) 0.8 (c) 0.008 (d) 8
  24. 24.What is the value of the digit 7 in 47.152? (a) 0.7 (b) 70 (c) 7 (d) 0.07
  25. 25.Which is the smallest: 0.319, 0.4, 0.015, 0.44? (a) 0.319 (b) 0.4 (c) 0.015 (d) 0.44
  26. 26.1.04 + 7.7 = ? (a) 8.64 (b) 8.74 (c) 8.84 (d) 1.81
  27. 27.Which is the greatest: 0.633, 0.76, 0.081, 0.7? (a) 0.633 (b) 0.76 (c) 0.081 (d) 0.7
  28. 28.What is the value of the digit 7 in 78.239? (a) 0.07 (b) 0.7 (c) 70 (d) 7
  29. 29.2.48 + 9.2 = ? (a) 11.78 (b) 11.68 (c) 11.58 (d) 3.4
  30. 30.What is the value of the digit 5 in 31.256? (a) 5 (b) 0.5 (c) 0.005 (d) 0.05
  31. 31.9.49 + 7.3 = ? (a) 16.79 (b) 16.69 (c) 16.89 (d) 10.22
  32. 32.What is the value of the digit 5 in 14.253? (a) 0.05 (b) 5 (c) 0.5 (d) 0.005
  33. 33.9.52 + 9.9 = ? (a) 10.51 (b) 19.52 (c) 19.32 (d) 19.42
  34. 34.What is the value of the digit 3 in 83.549? (a) 30 (b) 0.03 (c) 3 (d) 0.3
  35. 35.Which is the greatest: 0.046, 0.75, 0.633, 0.7? (a) 0.046 (b) 0.75 (c) 0.633 (d) 0.7
  36. 36.3.71 + 7.2 = ? (a) 10.81 (b) 10.91 (c) 11.01 (d) 4.43
  37. 37.2.87 + 1.9 = ? (a) 4.67 (b) 4.87 (c) 3.06 (d) 4.77
  38. 38.Which is the greatest: 0.023, 0.539, 0.6, 0.63? (a) 0.023 (b) 0.539 (c) 0.6 (d) 0.63
  39. 39.3.02 + 2.5 = ? (a) 3.27 (b) 5.62 (c) 5.42 (d) 5.52
  40. 40.2.88 + 9.2 = ? (a) 12.18 (b) 3.8 (c) 11.98 (d) 12.08

Answer key

  1. 17.22
  2. 0.008
  3. 9.71
  4. 8.84
  5. 8.79
  6. 0.08
  7. 7.07
  8. 3.76
  9. 4.21
  10. 1
  11. 0.001
  12. 0.67
  13. 0.33
  14. 0.06
  15. 4.57
  16. 0.6
  17. 8.45
  18. 0.062
  19. 3
  20. 0.073
  21. 8.19
  22. 0.47
  23. 0.8
  24. 7
  25. 0.015
  26. 8.74
  27. 0.76
  28. 70
  29. 11.68
  30. 0.05
  31. 16.79
  32. 0.05
  33. 19.42
  34. 3
  35. 0.75
  36. 10.91
  37. 4.77
  38. 0.63
  39. 5.52
  40. 12.08

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