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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 513 · 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. 1.9.91 + 5.6 = ? (a) 15.51 (b) 10.47 (c) 15.41 (d) 15.61
  2. 2.What is the value of the digit 5 in 51.378? (a) 5 (b) 0.05 (c) 0.5 (d) 50
  3. 3.4.09 + 2.7 = ? (a) 6.89 (b) 6.69 (c) 4.36 (d) 6.79
  4. 4.Which is the smallest: 0.2, 0.085, 0.22, 0.111? (a) 0.2 (b) 0.085 (c) 0.22 (d) 0.111
  5. 5.What is the value of the digit 3 in 37.568? (a) 0.03 (b) 3 (c) 30 (d) 0.3
  6. 6.What is the value of the digit 6 in 61.538? (a) 0.06 (b) 6 (c) 0.6 (d) 60
  7. 7.Which is the greatest: 0.088, 0.7, 0.654, 0.79? (a) 0.088 (b) 0.7 (c) 0.654 (d) 0.79
  8. 8.1.33 + 7.1 = ? (a) 2.04 (b) 8.53 (c) 8.43 (d) 8.33
  9. 9.3.81 + 8.1 = ? (a) 4.62 (b) 11.81 (c) 12.01 (d) 11.91
  10. 10.Which is the greatest: 0.65, 0.571, 0.6, 0.059? (a) 0.65 (b) 0.571 (c) 0.6 (d) 0.059
  11. 11.Which is the greatest: 0.49, 0.016, 0.396, 0.4? (a) 0.49 (b) 0.016 (c) 0.396 (d) 0.4
  12. 12.What is the value of the digit 3 in 41.832? (a) 0.03 (b) 0.3 (c) 0.003 (d) 3
  13. 13.What is the value of the digit 8 in 37.185? (a) 0.008 (b) 8 (c) 0.08 (d) 0.8
  14. 14.Which is the smallest: 0.29, 0.2, 0.015, 0.179? (a) 0.29 (b) 0.2 (c) 0.015 (d) 0.179
  15. 15.Which is the greatest: 0.044, 0.35, 0.274, 0.3? (a) 0.044 (b) 0.35 (c) 0.274 (d) 0.3
  16. 16.5.41 + 7.1 = ? (a) 12.61 (b) 6.12 (c) 12.41 (d) 12.51
  17. 17.2.22 + 8.5 = ? (a) 10.82 (b) 10.72 (c) 3.07 (d) 10.62
  18. 18.Which is the greatest: 0.097, 0.497, 0.59, 0.5? (a) 0.097 (b) 0.497 (c) 0.59 (d) 0.5
  19. 19.1.68 + 2.1 = ? (a) 1.89 (b) 3.78 (c) 3.88 (d) 3.68
  20. 20.7.56 + 4.5 = ? (a) 8.01 (b) 11.96 (c) 12.16 (d) 12.06
  21. 21.Which is the smallest: 0.071, 0.59, 0.5, 0.422? (a) 0.071 (b) 0.59 (c) 0.5 (d) 0.422
  22. 22.3.93 + 6.6 = ? (a) 10.53 (b) 4.59 (c) 10.43 (d) 10.63
  23. 23.Which is the greatest: 0.741, 0.89, 0.8, 0.075? (a) 0.741 (b) 0.89 (c) 0.8 (d) 0.075
  24. 24.Which is the smallest: 0.28, 0.2, 0.046, 0.167? (a) 0.28 (b) 0.2 (c) 0.046 (d) 0.167
  25. 25.What is the value of the digit 9 in 69.382? (a) 90 (b) 0.9 (c) 0.09 (d) 9
  26. 26.Which is the smallest: 0.22, 0.167, 0.043, 0.2? (a) 0.22 (b) 0.167 (c) 0.043 (d) 0.2
  27. 27.Which is the smallest: 0.63, 0.538, 0.066, 0.6? (a) 0.63 (b) 0.538 (c) 0.066 (d) 0.6
  28. 28.3.11 + 6.1 = ? (a) 3.72 (b) 9.31 (c) 9.21 (d) 9.11
  29. 29.What is the value of the digit 9 in 78.495? (a) 0.9 (b) 9 (c) 0.009 (d) 0.09
  30. 30.1.41 + 6.4 = ? (a) 7.71 (b) 2.05 (c) 7.81 (d) 7.91
  31. 31.What is the value of the digit 7 in 73.851? (a) 7 (b) 0.7 (c) 0.07 (d) 70
  32. 32.7.11 + 8.9 = ? (a) 15.91 (b) 8 (c) 16.01 (d) 16.11
  33. 33.9.33 + 2.9 = ? (a) 12.33 (b) 12.23 (c) 12.13 (d) 9.62
  34. 34.5.09 + 2.4 = ? (a) 5.33 (b) 7.59 (c) 7.39 (d) 7.49
  35. 35.What is the value of the digit 3 in 27.483? (a) 0.003 (b) 3 (c) 0.3 (d) 0.03
  36. 36.Which is the smallest: 0.3, 0.32, 0.239, 0.043? (a) 0.3 (b) 0.32 (c) 0.239 (d) 0.043
  37. 37.What is the value of the digit 3 in 59.132? (a) 0.03 (b) 0.003 (c) 3 (d) 0.3
  38. 38.What is the value of the digit 8 in 86.732? (a) 0.08 (b) 0.8 (c) 8 (d) 80
  39. 39.What is the value of the digit 1 in 18.234? (a) 1 (b) 10 (c) 0.01 (d) 0.1
  40. 40.What is the value of the digit 1 in 19.872? (a) 10 (b) 0.1 (c) 0.01 (d) 1

Answer key

  1. 15.51
  2. 50
  3. 6.79
  4. 0.085
  5. 30
  6. 60
  7. 0.79
  8. 8.43
  9. 11.91
  10. 0.65
  11. 0.49
  12. 0.03
  13. 0.08
  14. 0.015
  15. 0.35
  16. 12.51
  17. 10.72
  18. 0.59
  19. 3.78
  20. 12.06
  21. 0.071
  22. 10.53
  23. 0.89
  24. 0.046
  25. 9
  26. 0.043
  27. 0.066
  28. 9.21
  29. 0.09
  30. 7.81
  31. 70
  32. 16.01
  33. 12.23
  34. 7.49
  35. 0.003
  36. 0.043
  37. 0.03
  38. 80
  39. 10
  40. 10

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