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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 665 · 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. 1.9.04 + 4.7 = ? (a) 13.84 (b) 13.64 (c) 9.51 (d) 13.74
  2. 2.Which is the smallest: 0.6, 0.524, 0.059, 0.64? (a) 0.6 (b) 0.524 (c) 0.059 (d) 0.64
  3. 3.8.85 + 7.5 = ? (a) 16.45 (b) 16.25 (c) 16.35 (d) 9.6
  4. 4.What is the value of the digit 6 in 76.135? (a) 0.6 (b) 60 (c) 6 (d) 0.06
  5. 5.3.64 + 4.9 = ? (a) 8.54 (b) 8.64 (c) 8.44 (d) 4.13
  6. 6.What is the value of the digit 4 in 81.426? (a) 4 (b) 0.004 (c) 0.04 (d) 0.4
  7. 7.2.43 + 1.9 = ? (a) 4.43 (b) 4.33 (c) 4.23 (d) 2.62
  8. 8.What is the value of the digit 3 in 83.471? (a) 3 (b) 0.03 (c) 0.3 (d) 30
  9. 9.4.28 + 1.1 = ? (a) 4.39 (b) 5.28 (c) 5.48 (d) 5.38
  10. 10.What is the value of the digit 4 in 89.364? (a) 0.4 (b) 0.04 (c) 4 (d) 0.004
  11. 11.6.51 + 7.6 = ? (a) 7.27 (b) 14.11 (c) 14.21 (d) 14.01
  12. 12.8.02 + 2.6 = ? (a) 10.72 (b) 8.28 (c) 10.62 (d) 10.52
  13. 13.Which is the greatest: 0.2, 0.171, 0.21, 0.041? (a) 0.2 (b) 0.171 (c) 0.21 (d) 0.041
  14. 14.Which is the smallest: 0.093, 0.765, 0.84, 0.8? (a) 0.093 (b) 0.765 (c) 0.84 (d) 0.8
  15. 15.Which is the smallest: 0.49, 0.342, 0.4, 0.015? (a) 0.49 (b) 0.342 (c) 0.4 (d) 0.015
  16. 16.What is the value of the digit 9 in 48.129? (a) 0.9 (b) 0.09 (c) 9 (d) 0.009
  17. 17.Which is the smallest: 0.65, 0.6, 0.531, 0.081? (a) 0.65 (b) 0.6 (c) 0.531 (d) 0.081
  18. 18.What is the value of the digit 4 in 31.594? (a) 0.4 (b) 4 (c) 0.004 (d) 0.04
  19. 19.4.59 + 4.4 = ? (a) 8.89 (b) 5.03 (c) 9.09 (d) 8.99
  20. 20.Which is the smallest: 0.063, 0.272, 0.36, 0.3? (a) 0.063 (b) 0.272 (c) 0.36 (d) 0.3
  21. 21.7.75 + 1.8 = ? (a) 9.45 (b) 9.65 (c) 7.93 (d) 9.55
  22. 22.What is the value of the digit 8 in 27.896? (a) 0.8 (b) 0.008 (c) 0.08 (d) 8
  23. 23.What is the value of the digit 9 in 89.415? (a) 0.9 (b) 90 (c) 9 (d) 0.09
  24. 24.What is the value of the digit 5 in 25.391? (a) 0.5 (b) 5 (c) 50 (d) 0.05
  25. 25.Which is the smallest: 0.4, 0.369, 0.089, 0.42? (a) 0.4 (b) 0.369 (c) 0.089 (d) 0.42
  26. 26.What is the value of the digit 3 in 32.519? (a) 3 (b) 0.03 (c) 0.3 (d) 30
  27. 27.Which is the smallest: 0.185, 0.26, 0.2, 0.017? (a) 0.185 (b) 0.26 (c) 0.2 (d) 0.017
  28. 28.Which is the greatest: 0.6, 0.64, 0.587, 0.059? (a) 0.6 (b) 0.64 (c) 0.587 (d) 0.059
  29. 29.1.79 + 7.3 = ? (a) 9.19 (b) 2.52 (c) 9.09 (d) 8.99
  30. 30.What is the value of the digit 6 in 87.964? (a) 0.006 (b) 0.6 (c) 6 (d) 0.06
  31. 31.What is the value of the digit 7 in 63.287? (a) 0.007 (b) 0.07 (c) 0.7 (d) 7
  32. 32.5.16 + 3.1 = ? (a) 8.26 (b) 5.47 (c) 8.16 (d) 8.36
  33. 33.Which is the greatest: 0.379, 0.053, 0.42, 0.4? (a) 0.379 (b) 0.053 (c) 0.42 (d) 0.4
  34. 34.2.51 + 2.7 = ? (a) 5.11 (b) 5.31 (c) 2.78 (d) 5.21
  35. 35.3.01 + 4.7 = ? (a) 3.48 (b) 7.81 (c) 7.61 (d) 7.71
  36. 36.Which is the greatest: 0.23, 0.182, 0.065, 0.2? (a) 0.23 (b) 0.182 (c) 0.065 (d) 0.2
  37. 37.3.89 + 9.8 = ? (a) 13.69 (b) 4.87 (c) 13.79 (d) 13.59
  38. 38.Which is the smallest: 0.5, 0.55, 0.033, 0.412? (a) 0.5 (b) 0.55 (c) 0.033 (d) 0.412
  39. 39.Which is the smallest: 0.037, 0.8, 0.81, 0.794? (a) 0.037 (b) 0.8 (c) 0.81 (d) 0.794
  40. 40.Which is the smallest: 0.5, 0.425, 0.58, 0.035? (a) 0.5 (b) 0.425 (c) 0.58 (d) 0.035

Answer key

  1. 13.74
  2. 0.059
  3. 16.35
  4. 6
  5. 8.54
  6. 0.4
  7. 4.33
  8. 3
  9. 5.38
  10. 0.004
  11. 14.11
  12. 10.62
  13. 0.21
  14. 0.093
  15. 0.015
  16. 0.009
  17. 0.081
  18. 0.004
  19. 8.99
  20. 0.063
  21. 9.55
  22. 0.8
  23. 9
  24. 5
  25. 0.089
  26. 30
  27. 0.017
  28. 0.64
  29. 9.09
  30. 0.06
  31. 0.007
  32. 8.26
  33. 0.42
  34. 5.21
  35. 7.71
  36. 0.23
  37. 13.69
  38. 0.033
  39. 0.037
  40. 0.035

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