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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 904 · 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 9 in 49.531? (a) 90 (b) 0.9 (c) 0.09 (d) 9
  2. 2.5.38 + 3.1 = ? (a) 8.58 (b) 5.69 (c) 8.38 (d) 8.48
  3. 3.7.48 + 2.1 = ? (a) 9.58 (b) 9.48 (c) 9.68 (d) 7.69
  4. 4.Which is the smallest: 0.22, 0.2, 0.013, 0.199? (a) 0.22 (b) 0.2 (c) 0.013 (d) 0.199
  5. 5.Which is the smallest: 0.012, 0.8, 0.83, 0.773? (a) 0.012 (b) 0.8 (c) 0.83 (d) 0.773
  6. 6.4.19 + 9.8 = ? (a) 5.17 (b) 14.09 (c) 13.99 (d) 13.89
  7. 7.Which is the smallest: 0.3, 0.218, 0.079, 0.38? (a) 0.3 (b) 0.218 (c) 0.079 (d) 0.38
  8. 8.5.53 + 4.8 = ? (a) 10.23 (b) 10.43 (c) 6.01 (d) 10.33
  9. 9.7.13 + 2.1 = ? (a) 7.34 (b) 9.13 (c) 9.33 (d) 9.23
  10. 10.What is the value of the digit 1 in 31.489? (a) 1 (b) 10 (c) 0.01 (d) 0.1
  11. 11.8.83 + 7.1 = ? (a) 9.54 (b) 15.83 (c) 16.03 (d) 15.93
  12. 12.2.03 + 7.3 = ? (a) 9.23 (b) 9.43 (c) 2.76 (d) 9.33
  13. 13.What is the value of the digit 8 in 52.184? (a) 0.008 (b) 0.08 (c) 8 (d) 0.8
  14. 14.What is the value of the digit 6 in 96.174? (a) 60 (b) 0.6 (c) 6 (d) 0.06
  15. 15.Which is the greatest: 0.363, 0.4, 0.43, 0.046? (a) 0.363 (b) 0.4 (c) 0.43 (d) 0.046
  16. 16.1.04 + 2.4 = ? (a) 3.54 (b) 1.28 (c) 3.34 (d) 3.44
  17. 17.8.63 + 8.1 = ? (a) 16.73 (b) 16.83 (c) 16.63 (d) 9.44
  18. 18.Which is the smallest: 0.3, 0.078, 0.252, 0.39? (a) 0.3 (b) 0.078 (c) 0.252 (d) 0.39
  19. 19.What is the value of the digit 1 in 83.471? (a) 0.001 (b) 0.01 (c) 0.1 (d) 1
  20. 20.What is the value of the digit 1 in 61.728? (a) 1 (b) 0.1 (c) 10 (d) 0.01
  21. 21.Which is the greatest: 0.341, 0.4, 0.47, 0.043? (a) 0.341 (b) 0.4 (c) 0.47 (d) 0.043
  22. 22.Which is the greatest: 0.7, 0.041, 0.646, 0.74? (a) 0.7 (b) 0.041 (c) 0.646 (d) 0.74
  23. 23.1.88 + 1.1 = ? (a) 1.99 (b) 3.08 (c) 2.88 (d) 2.98
  24. 24.Which is the smallest: 0.099, 0.573, 0.6, 0.65? (a) 0.099 (b) 0.573 (c) 0.6 (d) 0.65
  25. 25.Which is the greatest: 0.279, 0.38, 0.015, 0.3? (a) 0.279 (b) 0.38 (c) 0.015 (d) 0.3
  26. 26.What is the value of the digit 7 in 89.713? (a) 7 (b) 0.007 (c) 0.07 (d) 0.7
  27. 27.5.72 + 2.2 = ? (a) 5.94 (b) 7.92 (c) 7.82 (d) 8.02
  28. 28.Which is the smallest: 0.375, 0.43, 0.4, 0.054? (a) 0.375 (b) 0.43 (c) 0.4 (d) 0.054
  29. 29.What is the value of the digit 5 in 86.572? (a) 5 (b) 0.05 (c) 0.005 (d) 0.5
  30. 30.What is the value of the digit 2 in 29.436? (a) 0.02 (b) 2 (c) 20 (d) 0.2
  31. 31.3.14 + 5.2 = ? (a) 3.66 (b) 8.44 (c) 8.24 (d) 8.34
  32. 32.What is the value of the digit 5 in 76.514? (a) 0.005 (b) 0.05 (c) 5 (d) 0.5
  33. 33.2.01 + 9.4 = ? (a) 11.51 (b) 11.41 (c) 11.31 (d) 2.95
  34. 34.5.98 + 6.9 = ? (a) 12.88 (b) 12.78 (c) 6.67 (d) 12.98
  35. 35.9.68 + 4.7 = ? (a) 14.48 (b) 10.15 (c) 14.38 (d) 14.28
  36. 36.6.85 + 2.4 = ? (a) 7.09 (b) 9.35 (c) 9.15 (d) 9.25
  37. 37.Which is the smallest: 0.212, 0.3, 0.019, 0.32? (a) 0.212 (b) 0.3 (c) 0.019 (d) 0.32
  38. 38.5.71 + 4.1 = ? (a) 9.71 (b) 9.91 (c) 6.12 (d) 9.81
  39. 39.7.39 + 6.9 = ? (a) 14.19 (b) 14.39 (c) 14.29 (d) 8.08
  40. 40.What is the value of the digit 8 in 19.682? (a) 0.8 (b) 8 (c) 0.008 (d) 0.08

Answer key

  1. 9
  2. 8.48
  3. 9.58
  4. 0.013
  5. 0.012
  6. 13.99
  7. 0.079
  8. 10.33
  9. 9.23
  10. 1
  11. 15.93
  12. 9.33
  13. 0.08
  14. 6
  15. 0.43
  16. 3.44
  17. 16.73
  18. 0.078
  19. 0.001
  20. 1
  21. 0.47
  22. 0.74
  23. 2.98
  24. 0.099
  25. 0.38
  26. 0.7
  27. 7.92
  28. 0.054
  29. 0.5
  30. 20
  31. 8.34
  32. 0.5
  33. 11.41
  34. 12.88
  35. 14.38
  36. 9.25
  37. 0.019
  38. 9.81
  39. 14.29
  40. 0.08

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