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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 150 · 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.What is the value of the digit 8 in 19.458? (a) 8 (b) 0.8 (c) 0.008 (d) 0.08
  2. 2.4.61 + 4.3 = ? (a) 8.91 (b) 8.81 (c) 9.01 (d) 5.04
  3. 3.What is the value of the digit 8 in 96.285? (a) 0.08 (b) 0.8 (c) 8 (d) 0.008
  4. 4.Which is the greatest: 0.114, 0.23, 0.2, 0.026? (a) 0.114 (b) 0.23 (c) 0.2 (d) 0.026
  5. 5.2.56 + 4.4 = ? (a) 6.96 (b) 7.06 (c) 6.86 (d) 3
  6. 6.Which is the greatest: 0.663, 0.76, 0.7, 0.038? (a) 0.663 (b) 0.76 (c) 0.7 (d) 0.038
  7. 7.What is the value of the digit 4 in 31.249? (a) 0.04 (b) 4 (c) 0.4 (d) 0.004
  8. 8.What is the value of the digit 3 in 32.154? (a) 0.3 (b) 0.03 (c) 3 (d) 30
  9. 9.What is the value of the digit 8 in 49.287? (a) 0.008 (b) 0.8 (c) 8 (d) 0.08
  10. 10.Which is the smallest: 0.282, 0.068, 0.3, 0.39? (a) 0.282 (b) 0.068 (c) 0.3 (d) 0.39
  11. 11.Which is the greatest: 0.031, 0.36, 0.251, 0.3? (a) 0.031 (b) 0.36 (c) 0.251 (d) 0.3
  12. 12.9.38 + 2.1 = ? (a) 11.48 (b) 11.58 (c) 9.59 (d) 11.38
  13. 13.What is the value of the digit 7 in 96.837? (a) 7 (b) 0.7 (c) 0.07 (d) 0.007
  14. 14.5.21 + 4.3 = ? (a) 9.41 (b) 9.51 (c) 9.61 (d) 5.64
  15. 15.Which is the smallest: 0.384, 0.46, 0.046, 0.4? (a) 0.384 (b) 0.46 (c) 0.046 (d) 0.4
  16. 16.Which is the smallest: 0.023, 0.22, 0.185, 0.2? (a) 0.023 (b) 0.22 (c) 0.185 (d) 0.2
  17. 17.Which is the greatest: 0.3, 0.028, 0.31, 0.261? (a) 0.3 (b) 0.028 (c) 0.31 (d) 0.261
  18. 18.Which is the greatest: 0.7, 0.657, 0.041, 0.76? (a) 0.7 (b) 0.657 (c) 0.041 (d) 0.76
  19. 19.Which is the smallest: 0.3, 0.218, 0.029, 0.32? (a) 0.3 (b) 0.218 (c) 0.029 (d) 0.32
  20. 20.Which is the smallest: 0.014, 0.3, 0.34, 0.273? (a) 0.014 (b) 0.3 (c) 0.34 (d) 0.273
  21. 21.9.12 + 6.9 = ? (a) 16.02 (b) 15.92 (c) 16.12 (d) 9.81
  22. 22.What is the value of the digit 6 in 94.863? (a) 0.006 (b) 0.06 (c) 0.6 (d) 6
  23. 23.1.91 + 6.8 = ? (a) 8.81 (b) 8.61 (c) 2.59 (d) 8.71
  24. 24.What is the value of the digit 5 in 26.359? (a) 0.5 (b) 0.05 (c) 5 (d) 0.005
  25. 25.Which is the smallest: 0.453, 0.5, 0.027, 0.54? (a) 0.453 (b) 0.5 (c) 0.027 (d) 0.54
  26. 26.6.11 + 5.6 = ? (a) 11.61 (b) 11.71 (c) 11.81 (d) 6.67
  27. 27.What is the value of the digit 8 in 34.258? (a) 0.8 (b) 8 (c) 0.08 (d) 0.008
  28. 28.4.58 + 5.9 = ? (a) 10.58 (b) 5.17 (c) 10.38 (d) 10.48
  29. 29.5.93 + 3.9 = ? (a) 9.93 (b) 9.73 (c) 6.32 (d) 9.83
  30. 30.What is the value of the digit 3 in 37.819? (a) 3 (b) 30 (c) 0.3 (d) 0.03
  31. 31.3.17 + 1.7 = ? (a) 4.97 (b) 4.87 (c) 3.34 (d) 4.77
  32. 32.What is the value of the digit 7 in 57.194? (a) 0.7 (b) 0.07 (c) 70 (d) 7
  33. 33.What is the value of the digit 7 in 17.598? (a) 0.07 (b) 0.7 (c) 70 (d) 7
  34. 34.What is the value of the digit 2 in 74.526? (a) 2 (b) 0.2 (c) 0.02 (d) 0.002
  35. 35.6.52 + 3.1 = ? (a) 9.62 (b) 6.83 (c) 9.52 (d) 9.72
  36. 36.2.44 + 1.1 = ? (a) 2.55 (b) 3.64 (c) 3.54 (d) 3.44
  37. 37.Which is the greatest: 0.2, 0.23, 0.039, 0.132? (a) 0.2 (b) 0.23 (c) 0.039 (d) 0.132
  38. 38.7.98 + 4.1 = ? (a) 8.39 (b) 11.98 (c) 12.18 (d) 12.08
  39. 39.1.41 + 7.1 = ? (a) 8.51 (b) 8.61 (c) 2.12 (d) 8.41
  40. 40.What is the value of the digit 4 in 31.649? (a) 0.4 (b) 0.004 (c) 0.04 (d) 4

Answer key

  1. 0.008
  2. 8.91
  3. 0.08
  4. 0.23
  5. 6.96
  6. 0.76
  7. 0.04
  8. 30
  9. 0.08
  10. 0.068
  11. 0.36
  12. 11.48
  13. 0.007
  14. 9.51
  15. 0.046
  16. 0.023
  17. 0.31
  18. 0.76
  19. 0.029
  20. 0.014
  21. 16.02
  22. 0.06
  23. 8.71
  24. 0.05
  25. 0.027
  26. 11.71
  27. 0.008
  28. 10.48
  29. 9.83
  30. 30
  31. 4.87
  32. 7
  33. 7
  34. 0.02
  35. 9.62
  36. 3.54
  37. 0.23
  38. 12.08
  39. 8.51
  40. 0.04

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