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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 117 · 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.Which is the greatest: 0.031, 0.75, 0.7, 0.661? (a) 0.031 (b) 0.75 (c) 0.7 (d) 0.661
  2. 2.What is the value of the digit 4 in 79.645? (a) 4 (b) 0.04 (c) 0.4 (d) 0.004
  3. 3.8.06 + 9.5 = ? (a) 17.46 (b) 17.56 (c) 17.66 (d) 9.01
  4. 4.7.09 + 6.3 = ? (a) 7.72 (b) 13.39 (c) 13.49 (d) 13.29
  5. 5.What is the value of the digit 5 in 64.513? (a) 5 (b) 0.005 (c) 0.5 (d) 0.05
  6. 6.What is the value of the digit 2 in 79.328? (a) 0.002 (b) 0.02 (c) 0.2 (d) 2
  7. 7.1.47 + 6.3 = ? (a) 2.1 (b) 7.87 (c) 7.67 (d) 7.77
  8. 8.What is the value of the digit 6 in 67.592? (a) 60 (b) 0.6 (c) 6 (d) 0.06
  9. 9.9.37 + 1.4 = ? (a) 10.87 (b) 9.51 (c) 10.67 (d) 10.77
  10. 10.What is the value of the digit 2 in 86.412? (a) 0.002 (b) 0.2 (c) 2 (d) 0.02
  11. 11.Which is the smallest: 0.4, 0.43, 0.021, 0.375? (a) 0.4 (b) 0.43 (c) 0.021 (d) 0.375
  12. 12.8.77 + 6.1 = ? (a) 14.97 (b) 9.38 (c) 14.77 (d) 14.87
  13. 13.Which is the smallest: 0.3, 0.058, 0.31, 0.243? (a) 0.3 (b) 0.058 (c) 0.31 (d) 0.243
  14. 14.1.61 + 6.8 = ? (a) 8.41 (b) 2.29 (c) 8.51 (d) 8.31
  15. 15.What is the value of the digit 7 in 79.832? (a) 70 (b) 7 (c) 0.7 (d) 0.07
  16. 16.9.49 + 1.8 = ? (a) 11.39 (b) 11.19 (c) 9.67 (d) 11.29
  17. 17.1.52 + 2.4 = ? (a) 4.02 (b) 3.82 (c) 1.76 (d) 3.92
  18. 18.What is the value of the digit 1 in 81.732? (a) 0.1 (b) 10 (c) 0.01 (d) 1
  19. 19.What is the value of the digit 3 in 62.349? (a) 3 (b) 0.003 (c) 0.3 (d) 0.03
  20. 20.Which is the greatest: 0.2, 0.082, 0.29, 0.197? (a) 0.2 (b) 0.082 (c) 0.29 (d) 0.197
  21. 21.Which is the greatest: 0.051, 0.29, 0.113, 0.2? (a) 0.051 (b) 0.29 (c) 0.113 (d) 0.2
  22. 22.2.21 + 5.6 = ? (a) 2.77 (b) 7.81 (c) 7.91 (d) 7.71
  23. 23.2.54 + 9.3 = ? (a) 11.94 (b) 11.74 (c) 11.84 (d) 3.47
  24. 24.What is the value of the digit 2 in 52.961? (a) 20 (b) 2 (c) 0.02 (d) 0.2
  25. 25.What is the value of the digit 5 in 35.186? (a) 0.05 (b) 5 (c) 50 (d) 0.5
  26. 26.2.52 + 4.5 = ? (a) 7.12 (b) 2.97 (c) 7.02 (d) 6.92
  27. 27.What is the value of the digit 4 in 12.746? (a) 0.4 (b) 0.04 (c) 4 (d) 0.004
  28. 28.6.89 + 5.1 = ? (a) 12.09 (b) 7.4 (c) 11.99 (d) 11.89
  29. 29.Which is the smallest: 0.058, 0.6, 0.64, 0.572? (a) 0.058 (b) 0.6 (c) 0.64 (d) 0.572
  30. 30.9.51 + 2.7 = ? (a) 12.21 (b) 9.78 (c) 12.31 (d) 12.11
  31. 31.6.14 + 5.1 = ? (a) 6.65 (b) 11.14 (c) 11.34 (d) 11.24
  32. 32.Which is the smallest: 0.29, 0.2, 0.136, 0.027? (a) 0.29 (b) 0.2 (c) 0.136 (d) 0.027
  33. 33.7.12 + 1.1 = ? (a) 8.12 (b) 8.22 (c) 7.23 (d) 8.32
  34. 34.What is the value of the digit 8 in 86.412? (a) 80 (b) 0.08 (c) 8 (d) 0.8
  35. 35.What is the value of the digit 1 in 14.953? (a) 0.1 (b) 1 (c) 0.01 (d) 10
  36. 36.8.66 + 6.4 = ? (a) 14.96 (b) 9.3 (c) 15.16 (d) 15.06
  37. 37.Which is the greatest: 0.175, 0.27, 0.2, 0.039? (a) 0.175 (b) 0.27 (c) 0.2 (d) 0.039
  38. 38.What is the value of the digit 9 in 62.439? (a) 0.09 (b) 9 (c) 0.9 (d) 0.009
  39. 39.9.56 + 4.2 = ? (a) 13.66 (b) 9.98 (c) 13.76 (d) 13.86
  40. 40.4.14 + 8.1 = ? (a) 12.34 (b) 12.14 (c) 12.24 (d) 4.95

Answer key

  1. 0.75
  2. 0.04
  3. 17.56
  4. 13.39
  5. 0.5
  6. 0.02
  7. 7.77
  8. 60
  9. 10.77
  10. 0.002
  11. 0.021
  12. 14.87
  13. 0.058
  14. 8.41
  15. 70
  16. 11.29
  17. 3.92
  18. 1
  19. 0.3
  20. 0.29
  21. 0.29
  22. 7.81
  23. 11.84
  24. 2
  25. 5
  26. 7.02
  27. 0.04
  28. 11.99
  29. 0.058
  30. 12.21
  31. 11.24
  32. 0.027
  33. 8.22
  34. 80
  35. 10
  36. 15.06
  37. 0.27
  38. 0.009
  39. 13.76
  40. 12.24

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