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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 799 · 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. 1.4.96 + 8.4 = ? (a) 13.46 (b) 5.8 (c) 13.26 (d) 13.36
  2. 2.What is the value of the digit 1 in 23.146? (a) 0.01 (b) 0.1 (c) 0.001 (d) 1
  3. 3.4.18 + 8.3 = ? (a) 12.38 (b) 5.01 (c) 12.58 (d) 12.48
  4. 4.Which is the greatest: 0.387, 0.43, 0.054, 0.4? (a) 0.387 (b) 0.43 (c) 0.054 (d) 0.4
  5. 5.What is the value of the digit 3 in 87.316? (a) 0.003 (b) 0.3 (c) 3 (d) 0.03
  6. 6.7.81 + 2.5 = ? (a) 10.21 (b) 10.41 (c) 8.06 (d) 10.31
  7. 7.6.37 + 2.3 = ? (a) 8.67 (b) 8.57 (c) 6.6 (d) 8.77
  8. 8.7.91 + 1.6 = ? (a) 9.41 (b) 9.51 (c) 8.07 (d) 9.61
  9. 9.7.12 + 9.8 = ? (a) 16.82 (b) 8.1 (c) 16.92 (d) 17.02
  10. 10.What is the value of the digit 6 in 12.386? (a) 6 (b) 0.006 (c) 0.06 (d) 0.6
  11. 11.3.61 + 6.8 = ? (a) 4.29 (b) 10.31 (c) 10.51 (d) 10.41
  12. 12.What is the value of the digit 7 in 25.367? (a) 7 (b) 0.007 (c) 0.07 (d) 0.7
  13. 13.Which is the smallest: 0.021, 0.192, 0.24, 0.2? (a) 0.021 (b) 0.192 (c) 0.24 (d) 0.2
  14. 14.6.82 + 6.6 = ? (a) 13.42 (b) 7.48 (c) 13.32 (d) 13.52
  15. 15.7.62 + 6.1 = ? (a) 8.23 (b) 13.72 (c) 13.62 (d) 13.82
  16. 16.What is the value of the digit 9 in 61.729? (a) 0.009 (b) 0.9 (c) 0.09 (d) 9
  17. 17.Which is the greatest: 0.021, 0.541, 0.64, 0.6? (a) 0.021 (b) 0.541 (c) 0.64 (d) 0.6
  18. 18.Which is the greatest: 0.583, 0.098, 0.62, 0.6? (a) 0.583 (b) 0.098 (c) 0.62 (d) 0.6
  19. 19.Which is the greatest: 0.025, 0.8, 0.89, 0.787? (a) 0.025 (b) 0.8 (c) 0.89 (d) 0.787
  20. 20.8.51 + 3.7 = ? (a) 12.21 (b) 12.11 (c) 8.88 (d) 12.31
  21. 21.4.41 + 8.6 = ? (a) 13.01 (b) 12.91 (c) 13.11 (d) 5.27
  22. 22.2.01 + 2.9 = ? (a) 4.81 (b) 2.3 (c) 5.01 (d) 4.91
  23. 23.What is the value of the digit 3 in 24.931? (a) 0.3 (b) 3 (c) 0.03 (d) 0.003
  24. 24.Which is the greatest: 0.655, 0.7, 0.023, 0.79? (a) 0.655 (b) 0.7 (c) 0.023 (d) 0.79
  25. 25.Which is the greatest: 0.024, 0.33, 0.3, 0.226? (a) 0.024 (b) 0.33 (c) 0.3 (d) 0.226
  26. 26.Which is the smallest: 0.7, 0.78, 0.052, 0.631? (a) 0.7 (b) 0.78 (c) 0.052 (d) 0.631
  27. 27.What is the value of the digit 7 in 17.329? (a) 0.7 (b) 0.07 (c) 7 (d) 70
  28. 28.What is the value of the digit 5 in 58.412? (a) 0.5 (b) 50 (c) 0.05 (d) 5
  29. 29.What is the value of the digit 8 in 12.485? (a) 0.8 (b) 8 (c) 0.008 (d) 0.08
  30. 30.Which is the smallest: 0.6, 0.085, 0.69, 0.551? (a) 0.6 (b) 0.085 (c) 0.69 (d) 0.551
  31. 31.7.92 + 7.4 = ? (a) 8.66 (b) 15.42 (c) 15.22 (d) 15.32
  32. 32.What is the value of the digit 8 in 27.183? (a) 0.08 (b) 0.008 (c) 0.8 (d) 8
  33. 33.What is the value of the digit 2 in 82.176? (a) 0.02 (b) 20 (c) 0.2 (d) 2
  34. 34.9.42 + 4.7 = ? (a) 14.12 (b) 9.89 (c) 14.02 (d) 14.22
  35. 35.9.03 + 3.5 = ? (a) 12.63 (b) 12.43 (c) 12.53 (d) 9.38
  36. 36.5.61 + 2.1 = ? (a) 7.61 (b) 7.81 (c) 7.71 (d) 5.82
  37. 37.7.34 + 8.9 = ? (a) 8.23 (b) 16.34 (c) 16.14 (d) 16.24
  38. 38.Which is the smallest: 0.8, 0.079, 0.82, 0.712? (a) 0.8 (b) 0.079 (c) 0.82 (d) 0.712
  39. 39.What is the value of the digit 1 in 69.142? (a) 0.1 (b) 0.01 (c) 1 (d) 0.001
  40. 40.Which is the smallest: 0.138, 0.29, 0.066, 0.2? (a) 0.138 (b) 0.29 (c) 0.066 (d) 0.2

Answer key

  1. 13.36
  2. 0.1
  3. 12.48
  4. 0.43
  5. 0.3
  6. 10.31
  7. 8.67
  8. 9.51
  9. 16.92
  10. 0.006
  11. 10.41
  12. 0.007
  13. 0.021
  14. 13.42
  15. 13.72
  16. 0.009
  17. 0.64
  18. 0.62
  19. 0.89
  20. 12.21
  21. 13.01
  22. 4.91
  23. 0.03
  24. 0.79
  25. 0.33
  26. 0.052
  27. 7
  28. 50
  29. 0.08
  30. 0.085
  31. 15.32
  32. 0.08
  33. 2
  34. 14.12
  35. 12.53
  36. 7.71
  37. 16.24
  38. 0.079
  39. 0.1
  40. 0.066

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