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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 521 · 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. 1.3.67 + 2.8 = ? (a) 6.37 (b) 6.57 (c) 6.47 (d) 3.95
  2. 2.What is the value of the digit 6 in 67.385? (a) 0.6 (b) 0.06 (c) 6 (d) 60
  3. 3.What is the value of the digit 5 in 75.296? (a) 50 (b) 5 (c) 0.5 (d) 0.05
  4. 4.Which is the smallest: 0.53, 0.086, 0.492, 0.5? (a) 0.53 (b) 0.086 (c) 0.492 (d) 0.5
  5. 5.Which is the greatest: 0.072, 0.23, 0.132, 0.2? (a) 0.072 (b) 0.23 (c) 0.132 (d) 0.2
  6. 6.6.62 + 9.1 = ? (a) 7.53 (b) 15.72 (c) 15.62 (d) 15.82
  7. 7.What is the value of the digit 1 in 71.325? (a) 10 (b) 0.01 (c) 1 (d) 0.1
  8. 8.6.22 + 3.9 = ? (a) 6.61 (b) 10.12 (c) 10.22 (d) 10.02
  9. 9.2.99 + 3.2 = ? (a) 6.29 (b) 6.09 (c) 6.19 (d) 3.31
  10. 10.7.61 + 8.6 = ? (a) 16.11 (b) 8.47 (c) 16.21 (d) 16.31
  11. 11.Which is the smallest: 0.064, 0.76, 0.7, 0.637? (a) 0.064 (b) 0.76 (c) 0.7 (d) 0.637
  12. 12.Which is the greatest: 0.074, 0.44, 0.4, 0.328? (a) 0.074 (b) 0.44 (c) 0.4 (d) 0.328
  13. 13.3.33 + 8.4 = ? (a) 11.83 (b) 11.63 (c) 11.73 (d) 4.17
  14. 14.What is the value of the digit 5 in 17.654? (a) 0.005 (b) 5 (c) 0.05 (d) 0.5
  15. 15.Which is the smallest: 0.351, 0.42, 0.061, 0.4? (a) 0.351 (b) 0.42 (c) 0.061 (d) 0.4
  16. 16.Which is the greatest: 0.54, 0.5, 0.062, 0.432? (a) 0.54 (b) 0.5 (c) 0.062 (d) 0.432
  17. 17.6.25 + 5.6 = ? (a) 11.95 (b) 6.81 (c) 11.75 (d) 11.85
  18. 18.Which is the smallest: 0.696, 0.7, 0.019, 0.76? (a) 0.696 (b) 0.7 (c) 0.019 (d) 0.76
  19. 19.What is the value of the digit 7 in 29.817? (a) 0.7 (b) 0.07 (c) 0.007 (d) 7
  20. 20.Which is the smallest: 0.045, 0.5, 0.448, 0.58? (a) 0.045 (b) 0.5 (c) 0.448 (d) 0.58
  21. 21.5.38 + 8.4 = ? (a) 13.88 (b) 13.78 (c) 13.68 (d) 6.22
  22. 22.8.09 + 1.3 = ? (a) 9.39 (b) 9.29 (c) 9.49 (d) 8.22
  23. 23.6.18 + 1.5 = ? (a) 7.58 (b) 6.33 (c) 7.68 (d) 7.78
  24. 24.7.09 + 4.6 = ? (a) 11.69 (b) 11.59 (c) 7.55 (d) 11.79
  25. 25.3.62 + 6.3 = ? (a) 4.25 (b) 10.02 (c) 9.82 (d) 9.92
  26. 26.What is the value of the digit 4 in 42.756? (a) 4 (b) 0.4 (c) 40 (d) 0.04
  27. 27.Which is the smallest: 0.058, 0.5, 0.57, 0.456? (a) 0.058 (b) 0.5 (c) 0.57 (d) 0.456
  28. 28.Which is the greatest: 0.266, 0.38, 0.3, 0.036? (a) 0.266 (b) 0.38 (c) 0.3 (d) 0.036
  29. 29.Which is the greatest: 0.87, 0.749, 0.8, 0.082? (a) 0.87 (b) 0.749 (c) 0.8 (d) 0.082
  30. 30.What is the value of the digit 3 in 19.376? (a) 0.3 (b) 0.03 (c) 0.003 (d) 3
  31. 31.9.75 + 6.3 = ? (a) 16.05 (b) 15.95 (c) 10.38 (d) 16.15
  32. 32.Which is the greatest: 0.78, 0.054, 0.625, 0.7? (a) 0.78 (b) 0.054 (c) 0.625 (d) 0.7
  33. 33.Which is the greatest: 0.089, 0.23, 0.2, 0.191? (a) 0.089 (b) 0.23 (c) 0.2 (d) 0.191
  34. 34.7.16 + 9.1 = ? (a) 16.16 (b) 16.26 (c) 8.07 (d) 16.36
  35. 35.3.93 + 1.4 = ? (a) 5.43 (b) 5.33 (c) 5.23 (d) 4.07
  36. 36.5.41 + 3.8 = ? (a) 5.79 (b) 9.31 (c) 9.11 (d) 9.21
  37. 37.9.12 + 4.2 = ? (a) 9.54 (b) 13.22 (c) 13.42 (d) 13.32
  38. 38.3.25 + 1.4 = ? (a) 4.75 (b) 4.55 (c) 3.39 (d) 4.65
  39. 39.Which is the greatest: 0.28, 0.145, 0.2, 0.056? (a) 0.28 (b) 0.145 (c) 0.2 (d) 0.056
  40. 40.What is the value of the digit 3 in 15.367? (a) 0.3 (b) 3 (c) 0.003 (d) 0.03

Answer key

  1. 6.47
  2. 60
  3. 5
  4. 0.086
  5. 0.23
  6. 15.72
  7. 1
  8. 10.12
  9. 6.19
  10. 16.21
  11. 0.064
  12. 0.44
  13. 11.73
  14. 0.05
  15. 0.061
  16. 0.54
  17. 11.85
  18. 0.019
  19. 0.007
  20. 0.045
  21. 13.78
  22. 9.39
  23. 7.68
  24. 11.69
  25. 9.92
  26. 40
  27. 0.058
  28. 0.38
  29. 0.87
  30. 0.3
  31. 16.05
  32. 0.78
  33. 0.23
  34. 16.26
  35. 5.33
  36. 9.21
  37. 13.32
  38. 4.65
  39. 0.28
  40. 0.3

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