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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 713 · 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: 0.165, 0.23, 0.068, 0.2? (a) 0.165 (b) 0.23 (c) 0.068 (d) 0.2
  2. 2.3.58 + 8.6 = ? (a) 12.08 (b) 12.28 (c) 4.44 (d) 12.18
  3. 3.9.14 + 7.2 = ? (a) 9.86 (b) 16.24 (c) 16.34 (d) 16.44
  4. 4.Which is the greatest: 0.347, 0.045, 0.4, 0.45? (a) 0.347 (b) 0.045 (c) 0.4 (d) 0.45
  5. 5.Which is the smallest: 0.439, 0.097, 0.55, 0.5? (a) 0.439 (b) 0.097 (c) 0.55 (d) 0.5
  6. 6.5.23 + 5.6 = ? (a) 10.73 (b) 10.93 (c) 5.79 (d) 10.83
  7. 7.2.24 + 5.5 = ? (a) 7.64 (b) 7.84 (c) 2.79 (d) 7.74
  8. 8.Which is the smallest: 0.26, 0.2, 0.049, 0.112? (a) 0.26 (b) 0.2 (c) 0.049 (d) 0.112
  9. 9.7.25 + 4.7 = ? (a) 11.95 (b) 12.05 (c) 7.72 (d) 11.85
  10. 10.5.43 + 1.1 = ? (a) 6.43 (b) 5.54 (c) 6.63 (d) 6.53
  11. 11.What is the value of the digit 5 in 83.695? (a) 0.5 (b) 0.05 (c) 5 (d) 0.005
  12. 12.7.61 + 3.1 = ? (a) 10.81 (b) 10.61 (c) 10.71 (d) 7.92
  13. 13.Which is the smallest: 0.688, 0.7, 0.74, 0.014? (a) 0.688 (b) 0.7 (c) 0.74 (d) 0.014
  14. 14.4.15 + 6.5 = ? (a) 10.75 (b) 4.8 (c) 10.65 (d) 10.55
  15. 15.7.65 + 1.4 = ? (a) 9.05 (b) 8.95 (c) 7.79 (d) 9.15
  16. 16.6.61 + 2.1 = ? (a) 8.81 (b) 8.71 (c) 8.61 (d) 6.82
  17. 17.Which is the smallest: 0.71, 0.7, 0.045, 0.699? (a) 0.71 (b) 0.7 (c) 0.045 (d) 0.699
  18. 18.Which is the smallest: 0.585, 0.027, 0.6, 0.67? (a) 0.585 (b) 0.027 (c) 0.6 (d) 0.67
  19. 19.Which is the greatest: 0.69, 0.513, 0.091, 0.6? (a) 0.69 (b) 0.513 (c) 0.091 (d) 0.6
  20. 20.6.77 + 3.1 = ? (a) 9.87 (b) 7.08 (c) 9.97 (d) 9.77
  21. 21.3.01 + 8.9 = ? (a) 11.81 (b) 12.01 (c) 11.91 (d) 3.9
  22. 22.What is the value of the digit 4 in 23.148? (a) 0.004 (b) 0.4 (c) 4 (d) 0.04
  23. 23.Which is the greatest: 0.037, 0.48, 0.374, 0.4? (a) 0.037 (b) 0.48 (c) 0.374 (d) 0.4
  24. 24.Which is the smallest: 0.5, 0.023, 0.432, 0.55? (a) 0.5 (b) 0.023 (c) 0.432 (d) 0.55
  25. 25.What is the value of the digit 1 in 31.452? (a) 0.01 (b) 1 (c) 10 (d) 0.1
  26. 26.Which is the smallest: 0.563, 0.66, 0.6, 0.082? (a) 0.563 (b) 0.66 (c) 0.6 (d) 0.082
  27. 27.Which is the greatest: 0.063, 0.8, 0.713, 0.81? (a) 0.063 (b) 0.8 (c) 0.713 (d) 0.81
  28. 28.Which is the greatest: 0.7, 0.032, 0.78, 0.675? (a) 0.7 (b) 0.032 (c) 0.78 (d) 0.675
  29. 29.Which is the greatest: 0.85, 0.776, 0.068, 0.8? (a) 0.85 (b) 0.776 (c) 0.068 (d) 0.8
  30. 30.Which is the greatest: 0.65, 0.023, 0.571, 0.6? (a) 0.65 (b) 0.023 (c) 0.571 (d) 0.6
  31. 31.What is the value of the digit 5 in 56.831? (a) 0.05 (b) 50 (c) 0.5 (d) 5
  32. 32.What is the value of the digit 1 in 58.172? (a) 0.01 (b) 0.001 (c) 1 (d) 0.1
  33. 33.Which is the greatest: 0.571, 0.6, 0.64, 0.053? (a) 0.571 (b) 0.6 (c) 0.64 (d) 0.053
  34. 34.What is the value of the digit 2 in 23.518? (a) 0.02 (b) 0.2 (c) 2 (d) 20
  35. 35.2.14 + 9.2 = ? (a) 3.06 (b) 11.44 (c) 11.24 (d) 11.34
  36. 36.4.75 + 2.3 = ? (a) 7.15 (b) 6.95 (c) 4.98 (d) 7.05
  37. 37.What is the value of the digit 9 in 98.617? (a) 9 (b) 0.09 (c) 90 (d) 0.9
  38. 38.9.77 + 7.2 = ? (a) 16.87 (b) 16.97 (c) 10.49 (d) 17.07
  39. 39.What is the value of the digit 2 in 18.274? (a) 0.2 (b) 0.02 (c) 0.002 (d) 2
  40. 40.Which is the smallest: 0.68, 0.593, 0.6, 0.081? (a) 0.68 (b) 0.593 (c) 0.6 (d) 0.081

Answer key

  1. 0.068
  2. 12.18
  3. 16.34
  4. 0.45
  5. 0.097
  6. 10.83
  7. 7.74
  8. 0.049
  9. 11.95
  10. 6.53
  11. 0.005
  12. 10.71
  13. 0.014
  14. 10.65
  15. 9.05
  16. 8.71
  17. 0.045
  18. 0.027
  19. 0.69
  20. 9.87
  21. 11.91
  22. 0.04
  23. 0.48
  24. 0.023
  25. 1
  26. 0.082
  27. 0.81
  28. 0.78
  29. 0.85
  30. 0.65
  31. 50
  32. 0.1
  33. 0.64
  34. 20
  35. 11.34
  36. 7.05
  37. 90
  38. 16.97
  39. 0.2
  40. 0.081

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