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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 512 · 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. 1.3.71 + 5.4 = ? (a) 9.11 (b) 9.21 (c) 9.01 (d) 4.25
  2. 2.Which is the greatest: 0.033, 0.28, 0.191, 0.2? (a) 0.033 (b) 0.28 (c) 0.191 (d) 0.2
  3. 3.3.78 + 2.1 = ? (a) 5.98 (b) 5.88 (c) 5.78 (d) 3.99
  4. 4.What is the value of the digit 3 in 35.719? (a) 30 (b) 3 (c) 0.03 (d) 0.3
  5. 5.What is the value of the digit 6 in 12.756? (a) 6 (b) 0.006 (c) 0.6 (d) 0.06
  6. 6.Which is the greatest: 0.5, 0.53, 0.027, 0.484? (a) 0.5 (b) 0.53 (c) 0.027 (d) 0.484
  7. 7.6.44 + 8.5 = ? (a) 7.29 (b) 14.84 (c) 14.94 (d) 15.04
  8. 8.Which is the smallest: 0.297, 0.31, 0.032, 0.3? (a) 0.297 (b) 0.31 (c) 0.032 (d) 0.3
  9. 9.7.51 + 4.1 = ? (a) 11.51 (b) 11.71 (c) 7.92 (d) 11.61
  10. 10.What is the value of the digit 1 in 94.581? (a) 0.1 (b) 0.01 (c) 0.001 (d) 1
  11. 11.4.37 + 6.1 = ? (a) 4.98 (b) 10.57 (c) 10.37 (d) 10.47
  12. 12.What is the value of the digit 5 in 93.851? (a) 0.05 (b) 0.005 (c) 0.5 (d) 5
  13. 13.Which is the smallest: 0.058, 0.55, 0.482, 0.5? (a) 0.058 (b) 0.55 (c) 0.482 (d) 0.5
  14. 14.Which is the greatest: 0.491, 0.021, 0.58, 0.5? (a) 0.491 (b) 0.021 (c) 0.58 (d) 0.5
  15. 15.Which is the greatest: 0.357, 0.49, 0.4, 0.075? (a) 0.357 (b) 0.49 (c) 0.4 (d) 0.075
  16. 16.Which is the smallest: 0.4, 0.42, 0.025, 0.361? (a) 0.4 (b) 0.42 (c) 0.025 (d) 0.361
  17. 17.What is the value of the digit 1 in 26.315? (a) 0.1 (b) 0.01 (c) 1 (d) 0.001
  18. 18.Which is the smallest: 0.3, 0.38, 0.029, 0.269? (a) 0.3 (b) 0.38 (c) 0.029 (d) 0.269
  19. 19.What is the value of the digit 2 in 76.283? (a) 0.02 (b) 2 (c) 0.2 (d) 0.002
  20. 20.What is the value of the digit 6 in 24.396? (a) 0.06 (b) 0.6 (c) 6 (d) 0.006
  21. 21.3.66 + 3.3 = ? (a) 7.06 (b) 3.99 (c) 6.86 (d) 6.96
  22. 22.1.71 + 2.1 = ? (a) 1.92 (b) 3.71 (c) 3.91 (d) 3.81
  23. 23.1.63 + 3.4 = ? (a) 5.13 (b) 1.97 (c) 4.93 (d) 5.03
  24. 24.4.54 + 5.8 = ? (a) 10.24 (b) 10.34 (c) 10.44 (d) 5.12
  25. 25.Which is the greatest: 0.064, 0.78, 0.7, 0.621? (a) 0.064 (b) 0.78 (c) 0.7 (d) 0.621
  26. 26.6.61 + 3.3 = ? (a) 9.91 (b) 6.94 (c) 10.01 (d) 9.81
  27. 27.9.04 + 7.7 = ? (a) 16.84 (b) 9.81 (c) 16.64 (d) 16.74
  28. 28.Which is the smallest: 0.021, 0.74, 0.7, 0.619? (a) 0.021 (b) 0.74 (c) 0.7 (d) 0.619
  29. 29.What is the value of the digit 3 in 48.137? (a) 0.03 (b) 0.3 (c) 3 (d) 0.003
  30. 30.What is the value of the digit 4 in 74.381? (a) 0.4 (b) 40 (c) 0.04 (d) 4
  31. 31.What is the value of the digit 9 in 37.169? (a) 0.9 (b) 9 (c) 0.009 (d) 0.09
  32. 32.Which is the greatest: 0.26, 0.2, 0.141, 0.059? (a) 0.26 (b) 0.2 (c) 0.141 (d) 0.059
  33. 33.1.79 + 2.7 = ? (a) 2.06 (b) 4.39 (c) 4.49 (d) 4.59
  34. 34.Which is the smallest: 0.64, 0.029, 0.591, 0.6? (a) 0.64 (b) 0.029 (c) 0.591 (d) 0.6
  35. 35.9.03 + 9.2 = ? (a) 18.13 (b) 9.95 (c) 18.33 (d) 18.23
  36. 36.What is the value of the digit 6 in 18.634? (a) 0.006 (b) 0.06 (c) 0.6 (d) 6
  37. 37.8.87 + 1.7 = ? (a) 9.04 (b) 10.57 (c) 10.47 (d) 10.67
  38. 38.Which is the smallest: 0.634, 0.76, 0.045, 0.7? (a) 0.634 (b) 0.76 (c) 0.045 (d) 0.7
  39. 39.7.57 + 3.9 = ? (a) 7.96 (b) 11.37 (c) 11.47 (d) 11.57
  40. 40.9.81 + 5.7 = ? (a) 15.51 (b) 10.38 (c) 15.61 (d) 15.41

Answer key

  1. 9.11
  2. 0.28
  3. 5.88
  4. 30
  5. 0.006
  6. 0.53
  7. 14.94
  8. 0.032
  9. 11.61
  10. 0.001
  11. 10.47
  12. 0.05
  13. 0.058
  14. 0.58
  15. 0.49
  16. 0.025
  17. 0.01
  18. 0.029
  19. 0.2
  20. 0.006
  21. 6.96
  22. 3.81
  23. 5.03
  24. 10.34
  25. 0.78
  26. 9.91
  27. 16.74
  28. 0.021
  29. 0.03
  30. 4
  31. 0.009
  32. 0.26
  33. 4.49
  34. 0.029
  35. 18.23
  36. 0.6
  37. 10.57
  38. 0.045
  39. 11.47
  40. 15.51

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