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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 804 · 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: 0.33, 0.243, 0.011, 0.3? (a) 0.33 (b) 0.243 (c) 0.011 (d) 0.3
  2. 2.5.71 + 4.7 = ? (a) 10.31 (b) 10.51 (c) 6.18 (d) 10.41
  3. 3.Which is the smallest: 0.72, 0.669, 0.033, 0.7? (a) 0.72 (b) 0.669 (c) 0.033 (d) 0.7
  4. 4.What is the value of the digit 1 in 83.641? (a) 0.001 (b) 0.01 (c) 0.1 (d) 1
  5. 5.Which is the smallest: 0.758, 0.81, 0.8, 0.077? (a) 0.758 (b) 0.81 (c) 0.8 (d) 0.077
  6. 6.What is the value of the digit 2 in 23.856? (a) 0.2 (b) 2 (c) 0.02 (d) 20
  7. 7.Which is the greatest: 0.139, 0.2, 0.044, 0.21? (a) 0.139 (b) 0.2 (c) 0.044 (d) 0.21
  8. 8.What is the value of the digit 2 in 97.132? (a) 2 (b) 0.2 (c) 0.002 (d) 0.02
  9. 9.5.64 + 7.9 = ? (a) 13.54 (b) 6.43 (c) 13.44 (d) 13.64
  10. 10.What is the value of the digit 2 in 29.173? (a) 0.02 (b) 20 (c) 2 (d) 0.2
  11. 11.2.01 + 2.4 = ? (a) 4.41 (b) 4.51 (c) 2.25 (d) 4.31
  12. 12.5.27 + 3.5 = ? (a) 8.77 (b) 5.62 (c) 8.87 (d) 8.67
  13. 13.Which is the smallest: 0.48, 0.4, 0.089, 0.351? (a) 0.48 (b) 0.4 (c) 0.089 (d) 0.351
  14. 14.Which is the smallest: 0.8, 0.741, 0.81, 0.024? (a) 0.8 (b) 0.741 (c) 0.81 (d) 0.024
  15. 15.Which is the greatest: 0.769, 0.067, 0.8, 0.82? (a) 0.769 (b) 0.067 (c) 0.8 (d) 0.82
  16. 16.What is the value of the digit 7 in 76.489? (a) 7 (b) 70 (c) 0.7 (d) 0.07
  17. 17.What is the value of the digit 4 in 62.814? (a) 0.4 (b) 4 (c) 0.004 (d) 0.04
  18. 18.Which is the smallest: 0.461, 0.53, 0.5, 0.013? (a) 0.461 (b) 0.53 (c) 0.5 (d) 0.013
  19. 19.8.55 + 6.1 = ? (a) 14.55 (b) 14.75 (c) 14.65 (d) 9.16
  20. 20.Which is the greatest: 0.4, 0.396, 0.088, 0.44? (a) 0.4 (b) 0.396 (c) 0.088 (d) 0.44
  21. 21.4.57 + 1.8 = ? (a) 4.75 (b) 6.47 (c) 6.37 (d) 6.27
  22. 22.9.02 + 6.5 = ? (a) 9.67 (b) 15.42 (c) 15.52 (d) 15.62
  23. 23.4.45 + 6.2 = ? (a) 10.55 (b) 10.75 (c) 5.07 (d) 10.65
  24. 24.6.18 + 8.7 = ? (a) 14.88 (b) 7.05 (c) 14.78 (d) 14.98
  25. 25.8.32 + 5.9 = ? (a) 8.91 (b) 14.12 (c) 14.32 (d) 14.22
  26. 26.Which is the greatest: 0.5, 0.466, 0.54, 0.083? (a) 0.5 (b) 0.466 (c) 0.54 (d) 0.083
  27. 27.Which is the greatest: 0.49, 0.332, 0.4, 0.092? (a) 0.49 (b) 0.332 (c) 0.4 (d) 0.092
  28. 28.9.49 + 2.1 = ? (a) 11.69 (b) 11.49 (c) 9.7 (d) 11.59
  29. 29.8.21 + 3.1 = ? (a) 11.41 (b) 11.21 (c) 11.31 (d) 8.52
  30. 30.5.81 + 7.1 = ? (a) 6.52 (b) 13.01 (c) 12.91 (d) 12.81
  31. 31.Which is the greatest: 0.3, 0.041, 0.245, 0.34? (a) 0.3 (b) 0.041 (c) 0.245 (d) 0.34
  32. 32.6.71 + 6.6 = ? (a) 7.37 (b) 13.21 (c) 13.41 (d) 13.31
  33. 33.3.55 + 4.1 = ? (a) 3.96 (b) 7.75 (c) 7.55 (d) 7.65
  34. 34.Which is the smallest: 0.21, 0.022, 0.174, 0.2? (a) 0.21 (b) 0.022 (c) 0.174 (d) 0.2
  35. 35.What is the value of the digit 3 in 84.237? (a) 0.3 (b) 0.03 (c) 3 (d) 0.003
  36. 36.2.83 + 8.7 = ? (a) 11.43 (b) 11.63 (c) 3.7 (d) 11.53
  37. 37.Which is the greatest: 0.077, 0.663, 0.7, 0.72? (a) 0.077 (b) 0.663 (c) 0.7 (d) 0.72
  38. 38.What is the value of the digit 4 in 39.847? (a) 0.004 (b) 0.04 (c) 4 (d) 0.4
  39. 39.Which is the greatest: 0.077, 0.35, 0.235, 0.3? (a) 0.077 (b) 0.35 (c) 0.235 (d) 0.3
  40. 40.What is the value of the digit 5 in 27.351? (a) 5 (b) 0.05 (c) 0.5 (d) 0.005

Answer key

  1. 0.011
  2. 10.41
  3. 0.033
  4. 0.001
  5. 0.077
  6. 20
  7. 0.21
  8. 0.002
  9. 13.54
  10. 20
  11. 4.41
  12. 8.77
  13. 0.089
  14. 0.024
  15. 0.82
  16. 70
  17. 0.004
  18. 0.013
  19. 14.65
  20. 0.44
  21. 6.37
  22. 15.52
  23. 10.65
  24. 14.88
  25. 14.22
  26. 0.54
  27. 0.49
  28. 11.59
  29. 11.31
  30. 12.91
  31. 0.34
  32. 13.31
  33. 7.65
  34. 0.022
  35. 0.03
  36. 11.53
  37. 0.72
  38. 0.04
  39. 0.35
  40. 0.05

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