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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 154 · 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 smallest: 0.612, 0.7, 0.71, 0.099? (a) 0.612 (b) 0.7 (c) 0.71 (d) 0.099
  2. 2.3.16 + 3.1 = ? (a) 3.47 (b) 6.16 (c) 6.26 (d) 6.36
  3. 3.Which is the smallest: 0.71, 0.643, 0.019, 0.7? (a) 0.71 (b) 0.643 (c) 0.019 (d) 0.7
  4. 4.Which is the greatest: 0.044, 0.24, 0.143, 0.2? (a) 0.044 (b) 0.24 (c) 0.143 (d) 0.2
  5. 5.3.81 + 8.4 = ? (a) 12.21 (b) 12.11 (c) 4.65 (d) 12.31
  6. 6.6.79 + 8.4 = ? (a) 7.63 (b) 15.29 (c) 15.09 (d) 15.19
  7. 7.8.19 + 9.1 = ? (a) 17.29 (b) 17.39 (c) 9.1 (d) 17.19
  8. 8.Which is the greatest: 0.25, 0.046, 0.178, 0.2? (a) 0.25 (b) 0.046 (c) 0.178 (d) 0.2
  9. 9.What is the value of the digit 1 in 31.897? (a) 0.1 (b) 1 (c) 0.01 (d) 10
  10. 10.What is the value of the digit 4 in 24.396? (a) 4 (b) 40 (c) 0.4 (d) 0.04
  11. 11.What is the value of the digit 7 in 76.934? (a) 70 (b) 0.7 (c) 0.07 (d) 7
  12. 12.Which is the smallest: 0.5, 0.482, 0.088, 0.55? (a) 0.5 (b) 0.482 (c) 0.088 (d) 0.55
  13. 13.What is the value of the digit 8 in 86.135? (a) 0.08 (b) 0.8 (c) 80 (d) 8
  14. 14.Which is the smallest: 0.283, 0.31, 0.077, 0.3? (a) 0.283 (b) 0.31 (c) 0.077 (d) 0.3
  15. 15.6.79 + 8.1 = ? (a) 14.99 (b) 14.79 (c) 7.6 (d) 14.89
  16. 16.What is the value of the digit 2 in 35.291? (a) 2 (b) 0.002 (c) 0.2 (d) 0.02
  17. 17.What is the value of the digit 2 in 23.671? (a) 0.2 (b) 0.02 (c) 2 (d) 20
  18. 18.6.31 + 7.3 = ? (a) 13.61 (b) 13.51 (c) 13.71 (d) 7.04
  19. 19.What is the value of the digit 4 in 85.647? (a) 0.4 (b) 0.004 (c) 0.04 (d) 4
  20. 20.What is the value of the digit 5 in 45.713? (a) 0.5 (b) 5 (c) 0.05 (d) 50
  21. 21.9.64 + 8.4 = ? (a) 18.04 (b) 18.14 (c) 10.48 (d) 17.94
  22. 22.What is the value of the digit 3 in 72.365? (a) 3 (b) 0.003 (c) 0.3 (d) 0.03
  23. 23.What is the value of the digit 8 in 41.298? (a) 0.8 (b) 0.08 (c) 8 (d) 0.008
  24. 24.5.84 + 1.4 = ? (a) 7.14 (b) 7.34 (c) 7.24 (d) 5.98
  25. 25.2.17 + 3.6 = ? (a) 5.87 (b) 5.67 (c) 5.77 (d) 2.53
  26. 26.Which is the greatest: 0.045, 0.69, 0.529, 0.6? (a) 0.045 (b) 0.69 (c) 0.529 (d) 0.6
  27. 27.1.62 + 7.1 = ? (a) 2.33 (b) 8.82 (c) 8.62 (d) 8.72
  28. 28.What is the value of the digit 5 in 37.546? (a) 0.05 (b) 0.5 (c) 0.005 (d) 5
  29. 29.Which is the greatest: 0.4, 0.46, 0.015, 0.335? (a) 0.4 (b) 0.46 (c) 0.015 (d) 0.335
  30. 30.Which is the greatest: 0.36, 0.098, 0.218, 0.3? (a) 0.36 (b) 0.098 (c) 0.218 (d) 0.3
  31. 31.What is the value of the digit 7 in 17.653? (a) 0.7 (b) 70 (c) 7 (d) 0.07
  32. 32.What is the value of the digit 2 in 69.582? (a) 2 (b) 0.02 (c) 0.2 (d) 0.002
  33. 33.What is the value of the digit 7 in 34.687? (a) 7 (b) 0.7 (c) 0.007 (d) 0.07
  34. 34.2.82 + 9.2 = ? (a) 12.02 (b) 3.74 (c) 11.92 (d) 12.12
  35. 35.6.65 + 5.3 = ? (a) 11.85 (b) 11.95 (c) 12.05 (d) 7.18
  36. 36.1.99 + 3.5 = ? (a) 5.49 (b) 2.34 (c) 5.59 (d) 5.39
  37. 37.What is the value of the digit 9 in 46.398? (a) 0.09 (b) 0.009 (c) 0.9 (d) 9
  38. 38.Which is the smallest: 0.673, 0.7, 0.035, 0.71? (a) 0.673 (b) 0.7 (c) 0.035 (d) 0.71
  39. 39.Which is the greatest: 0.63, 0.6, 0.014, 0.557? (a) 0.63 (b) 0.6 (c) 0.014 (d) 0.557
  40. 40.What is the value of the digit 7 in 74.856? (a) 70 (b) 0.07 (c) 0.7 (d) 7

Answer key

  1. 0.099
  2. 6.26
  3. 0.019
  4. 0.24
  5. 12.21
  6. 15.19
  7. 17.29
  8. 0.25
  9. 1
  10. 4
  11. 70
  12. 0.088
  13. 80
  14. 0.077
  15. 14.89
  16. 0.2
  17. 20
  18. 13.61
  19. 0.04
  20. 5
  21. 18.04
  22. 0.3
  23. 0.008
  24. 7.24
  25. 5.77
  26. 0.69
  27. 8.72
  28. 0.5
  29. 0.46
  30. 0.36
  31. 7
  32. 0.002
  33. 0.007
  34. 12.02
  35. 11.95
  36. 5.49
  37. 0.09
  38. 0.035
  39. 0.63
  40. 70

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