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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 620 · 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: 0.046, 0.462, 0.5, 0.59? (a) 0.046 (b) 0.462 (c) 0.5 (d) 0.59
  2. 2.Which is the smallest: 0.4, 0.46, 0.049, 0.362? (a) 0.4 (b) 0.46 (c) 0.049 (d) 0.362
  3. 3.2.67 + 5.8 = ? (a) 3.25 (b) 8.47 (c) 8.37 (d) 8.57
  4. 4.Which is the greatest: 0.036, 0.366, 0.4, 0.46? (a) 0.036 (b) 0.366 (c) 0.4 (d) 0.46
  5. 5.Which is the greatest: 0.21, 0.014, 0.152, 0.2? (a) 0.21 (b) 0.014 (c) 0.152 (d) 0.2
  6. 6.9.46 + 4.1 = ? (a) 13.56 (b) 9.87 (c) 13.46 (d) 13.66
  7. 7.Which is the greatest: 0.055, 0.6, 0.67, 0.573? (a) 0.055 (b) 0.6 (c) 0.67 (d) 0.573
  8. 8.Which is the smallest: 0.516, 0.6, 0.073, 0.61? (a) 0.516 (b) 0.6 (c) 0.073 (d) 0.61
  9. 9.4.39 + 3.3 = ? (a) 4.72 (b) 7.59 (c) 7.69 (d) 7.79
  10. 10.6.65 + 2.6 = ? (a) 6.91 (b) 9.15 (c) 9.35 (d) 9.25
  11. 11.Which is the greatest: 0.23, 0.167, 0.088, 0.2? (a) 0.23 (b) 0.167 (c) 0.088 (d) 0.2
  12. 12.What is the value of the digit 3 in 45.136? (a) 0.3 (b) 0.03 (c) 0.003 (d) 3
  13. 13.4.09 + 8.1 = ? (a) 4.9 (b) 12.29 (c) 12.09 (d) 12.19
  14. 14.Which is the smallest: 0.089, 0.721, 0.85, 0.8? (a) 0.089 (b) 0.721 (c) 0.85 (d) 0.8
  15. 15.5.77 + 1.8 = ? (a) 7.57 (b) 7.67 (c) 7.47 (d) 5.95
  16. 16.Which is the smallest: 0.8, 0.084, 0.765, 0.85? (a) 0.8 (b) 0.084 (c) 0.765 (d) 0.85
  17. 17.What is the value of the digit 9 in 49.865? (a) 0.09 (b) 0.9 (c) 90 (d) 9
  18. 18.Which is the smallest: 0.43, 0.392, 0.082, 0.4? (a) 0.43 (b) 0.392 (c) 0.082 (d) 0.4
  19. 19.Which is the greatest: 0.012, 0.33, 0.214, 0.3? (a) 0.012 (b) 0.33 (c) 0.214 (d) 0.3
  20. 20.What is the value of the digit 8 in 12.854? (a) 8 (b) 0.008 (c) 0.08 (d) 0.8
  21. 21.Which is the smallest: 0.2, 0.157, 0.26, 0.094? (a) 0.2 (b) 0.157 (c) 0.26 (d) 0.094
  22. 22.4.26 + 1.4 = ? (a) 5.76 (b) 4.4 (c) 5.66 (d) 5.56
  23. 23.Which is the greatest: 0.422, 0.54, 0.067, 0.5? (a) 0.422 (b) 0.54 (c) 0.067 (d) 0.5
  24. 24.8.18 + 5.1 = ? (a) 13.38 (b) 8.69 (c) 13.18 (d) 13.28
  25. 25.5.82 + 6.5 = ? (a) 6.47 (b) 12.32 (c) 12.22 (d) 12.42
  26. 26.9.73 + 5.1 = ? (a) 14.73 (b) 14.93 (c) 14.83 (d) 10.24
  27. 27.9.74 + 1.4 = ? (a) 9.88 (b) 11.14 (c) 11.24 (d) 11.04
  28. 28.8.15 + 3.4 = ? (a) 11.65 (b) 11.55 (c) 11.45 (d) 8.49
  29. 29.9.51 + 5.6 = ? (a) 15.21 (b) 15.11 (c) 15.01 (d) 10.07
  30. 30.What is the value of the digit 1 in 67.912? (a) 0.01 (b) 1 (c) 0.1 (d) 0.001
  31. 31.Which is the greatest: 0.512, 0.098, 0.63, 0.6? (a) 0.512 (b) 0.098 (c) 0.63 (d) 0.6
  32. 32.What is the value of the digit 8 in 18.429? (a) 8 (b) 80 (c) 0.8 (d) 0.08
  33. 33.What is the value of the digit 2 in 86.324? (a) 2 (b) 0.02 (c) 0.002 (d) 0.2
  34. 34.What is the value of the digit 6 in 38.961? (a) 6 (b) 0.06 (c) 0.6 (d) 0.006
  35. 35.What is the value of the digit 7 in 42.178? (a) 0.7 (b) 0.007 (c) 0.07 (d) 7
  36. 36.Which is the greatest: 0.055, 0.89, 0.8, 0.779? (a) 0.055 (b) 0.89 (c) 0.8 (d) 0.779
  37. 37.Which is the greatest: 0.085, 0.5, 0.494, 0.53? (a) 0.085 (b) 0.5 (c) 0.494 (d) 0.53
  38. 38.9.45 + 8.1 = ? (a) 17.45 (b) 10.26 (c) 17.65 (d) 17.55
  39. 39.Which is the smallest: 0.025, 0.57, 0.433, 0.5? (a) 0.025 (b) 0.57 (c) 0.433 (d) 0.5
  40. 40.Which is the greatest: 0.045, 0.67, 0.6, 0.598? (a) 0.045 (b) 0.67 (c) 0.6 (d) 0.598

Answer key

  1. 0.59
  2. 0.049
  3. 8.47
  4. 0.46
  5. 0.21
  6. 13.56
  7. 0.67
  8. 0.073
  9. 7.69
  10. 9.25
  11. 0.23
  12. 0.03
  13. 12.19
  14. 0.089
  15. 7.57
  16. 0.084
  17. 9
  18. 0.082
  19. 0.33
  20. 0.8
  21. 0.094
  22. 5.66
  23. 0.54
  24. 13.28
  25. 12.32
  26. 14.83
  27. 11.14
  28. 11.55
  29. 15.11
  30. 0.01
  31. 0.63
  32. 8
  33. 0.02
  34. 0.06
  35. 0.07
  36. 0.89
  37. 0.53
  38. 17.55
  39. 0.025
  40. 0.67

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