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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 626 · 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: 0.099, 0.562, 0.61, 0.6? (a) 0.099 (b) 0.562 (c) 0.61 (d) 0.6
  2. 2.2.34 + 6.6 = ? (a) 3 (b) 9.04 (c) 8.94 (d) 8.84
  3. 3.5.03 + 3.6 = ? (a) 8.73 (b) 5.39 (c) 8.53 (d) 8.63
  4. 4.Which is the smallest: 0.7, 0.673, 0.79, 0.089? (a) 0.7 (b) 0.673 (c) 0.79 (d) 0.089
  5. 5.What is the value of the digit 7 in 83.749? (a) 0.07 (b) 7 (c) 0.007 (d) 0.7
  6. 6.What is the value of the digit 8 in 39.786? (a) 0.08 (b) 8 (c) 0.008 (d) 0.8
  7. 7.Which is the greatest: 0.059, 0.41, 0.353, 0.4? (a) 0.059 (b) 0.41 (c) 0.353 (d) 0.4
  8. 8.5.09 + 7.4 = ? (a) 12.39 (b) 5.83 (c) 12.59 (d) 12.49
  9. 9.Which is the greatest: 0.123, 0.28, 0.032, 0.2? (a) 0.123 (b) 0.28 (c) 0.032 (d) 0.2
  10. 10.1.45 + 3.5 = ? (a) 4.95 (b) 5.05 (c) 1.8 (d) 4.85
  11. 11.What is the value of the digit 6 in 35.716? (a) 0.6 (b) 0.06 (c) 6 (d) 0.006
  12. 12.7.64 + 1.8 = ? (a) 7.82 (b) 9.34 (c) 9.44 (d) 9.54
  13. 13.What is the value of the digit 5 in 98.572? (a) 0.005 (b) 0.5 (c) 0.05 (d) 5
  14. 14.What is the value of the digit 6 in 46.825? (a) 6 (b) 60 (c) 0.6 (d) 0.06
  15. 15.Which is the greatest: 0.153, 0.28, 0.2, 0.022? (a) 0.153 (b) 0.28 (c) 0.2 (d) 0.022
  16. 16.What is the value of the digit 2 in 12.394? (a) 2 (b) 0.2 (c) 20 (d) 0.02
  17. 17.Which is the greatest: 0.26, 0.2, 0.165, 0.042? (a) 0.26 (b) 0.2 (c) 0.165 (d) 0.042
  18. 18.4.83 + 8.9 = ? (a) 5.72 (b) 13.63 (c) 13.83 (d) 13.73
  19. 19.What is the value of the digit 4 in 86.423? (a) 0.4 (b) 4 (c) 0.004 (d) 0.04
  20. 20.What is the value of the digit 1 in 38.165? (a) 0.01 (b) 0.001 (c) 1 (d) 0.1
  21. 21.What is the value of the digit 5 in 79.536? (a) 0.5 (b) 5 (c) 0.005 (d) 0.05
  22. 22.Which is the smallest: 0.018, 0.352, 0.4, 0.43? (a) 0.018 (b) 0.352 (c) 0.4 (d) 0.43
  23. 23.4.34 + 3.1 = ? (a) 4.65 (b) 7.54 (c) 7.34 (d) 7.44
  24. 24.Which is the greatest: 0.393, 0.049, 0.4, 0.47? (a) 0.393 (b) 0.049 (c) 0.4 (d) 0.47
  25. 25.2.48 + 1.4 = ? (a) 3.98 (b) 3.78 (c) 2.62 (d) 3.88
  26. 26.9.79 + 9.5 = ? (a) 10.74 (b) 19.29 (c) 19.39 (d) 19.19
  27. 27.Which is the smallest: 0.39, 0.228, 0.029, 0.3? (a) 0.39 (b) 0.228 (c) 0.029 (d) 0.3
  28. 28.Which is the greatest: 0.464, 0.084, 0.5, 0.51? (a) 0.464 (b) 0.084 (c) 0.5 (d) 0.51
  29. 29.What is the value of the digit 2 in 24.598? (a) 20 (b) 0.02 (c) 2 (d) 0.2
  30. 30.8.01 + 8.6 = ? (a) 16.51 (b) 8.87 (c) 16.71 (d) 16.61
  31. 31.What is the value of the digit 1 in 76.491? (a) 0.01 (b) 1 (c) 0.1 (d) 0.001
  32. 32.What is the value of the digit 5 in 65.874? (a) 50 (b) 0.05 (c) 5 (d) 0.5
  33. 33.7.67 + 2.8 = ? (a) 7.95 (b) 10.47 (c) 10.57 (d) 10.37
  34. 34.What is the value of the digit 9 in 73.698? (a) 0.009 (b) 0.9 (c) 0.09 (d) 9
  35. 35.3.19 + 8.6 = ? (a) 4.05 (b) 11.69 (c) 11.79 (d) 11.89
  36. 36.7.44 + 6.6 = ? (a) 8.1 (b) 13.94 (c) 14.04 (d) 14.14
  37. 37.Which is the smallest: 0.518, 0.61, 0.6, 0.033? (a) 0.518 (b) 0.61 (c) 0.6 (d) 0.033
  38. 38.8.01 + 3.8 = ? (a) 11.91 (b) 8.39 (c) 11.71 (d) 11.81
  39. 39.Which is the greatest: 0.173, 0.2, 0.28, 0.089? (a) 0.173 (b) 0.2 (c) 0.28 (d) 0.089
  40. 40.Which is the greatest: 0.2, 0.193, 0.067, 0.25? (a) 0.2 (b) 0.193 (c) 0.067 (d) 0.25

Answer key

  1. 0.099
  2. 8.94
  3. 8.63
  4. 0.089
  5. 0.7
  6. 0.08
  7. 0.41
  8. 12.49
  9. 0.28
  10. 4.95
  11. 0.006
  12. 9.44
  13. 0.5
  14. 6
  15. 0.28
  16. 2
  17. 0.26
  18. 13.73
  19. 0.4
  20. 0.1
  21. 0.5
  22. 0.018
  23. 7.44
  24. 0.47
  25. 3.88
  26. 19.29
  27. 0.029
  28. 0.51
  29. 20
  30. 16.61
  31. 0.001
  32. 5
  33. 10.47
  34. 0.09
  35. 11.79
  36. 14.04
  37. 0.033
  38. 11.81
  39. 0.28
  40. 0.25

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