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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 575 · 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 2 in 68.523? (a) 0.002 (b) 0.2 (c) 0.02 (d) 2
  2. 2.8.14 + 3.9 = ? (a) 12.04 (b) 8.53 (c) 12.14 (d) 11.94
  3. 3.7.51 + 1.6 = ? (a) 7.67 (b) 9.21 (c) 9.01 (d) 9.11
  4. 4.1.71 + 1.7 = ? (a) 1.88 (b) 3.41 (c) 3.31 (d) 3.51
  5. 5.3.57 + 4.8 = ? (a) 8.37 (b) 8.27 (c) 8.47 (d) 4.05
  6. 6.1.66 + 6.4 = ? (a) 8.16 (b) 7.96 (c) 8.06 (d) 2.3
  7. 7.Which is the smallest: 0.456, 0.5, 0.011, 0.56? (a) 0.456 (b) 0.5 (c) 0.011 (d) 0.56
  8. 8.Which is the smallest: 0.4, 0.075, 0.319, 0.45? (a) 0.4 (b) 0.075 (c) 0.319 (d) 0.45
  9. 9.6.09 + 4.7 = ? (a) 10.79 (b) 6.56 (c) 10.69 (d) 10.89
  10. 10.2.17 + 2.1 = ? (a) 4.37 (b) 2.38 (c) 4.17 (d) 4.27
  11. 11.What is the value of the digit 5 in 29.615? (a) 0.05 (b) 0.005 (c) 0.5 (d) 5
  12. 12.Which is the greatest: 0.278, 0.3, 0.31, 0.042? (a) 0.278 (b) 0.3 (c) 0.31 (d) 0.042
  13. 13.1.87 + 3.7 = ? (a) 2.24 (b) 5.57 (c) 5.67 (d) 5.47
  14. 14.What is the value of the digit 2 in 86.725? (a) 0.02 (b) 2 (c) 0.2 (d) 0.002
  15. 15.Which is the greatest: 0.085, 0.68, 0.6, 0.555? (a) 0.085 (b) 0.68 (c) 0.6 (d) 0.555
  16. 16.8.35 + 4.2 = ? (a) 8.77 (b) 12.65 (c) 12.45 (d) 12.55
  17. 17.What is the value of the digit 7 in 71.925? (a) 0.7 (b) 70 (c) 0.07 (d) 7
  18. 18.9.31 + 2.9 = ? (a) 12.21 (b) 12.31 (c) 12.11 (d) 9.6
  19. 19.7.49 + 8.2 = ? (a) 8.31 (b) 15.79 (c) 15.59 (d) 15.69
  20. 20.Which is the smallest: 0.7, 0.695, 0.73, 0.052? (a) 0.7 (b) 0.695 (c) 0.73 (d) 0.052
  21. 21.Which is the smallest: 0.191, 0.26, 0.2, 0.019? (a) 0.191 (b) 0.26 (c) 0.2 (d) 0.019
  22. 22.9.11 + 1.7 = ? (a) 10.71 (b) 10.91 (c) 10.81 (d) 9.28
  23. 23.Which is the smallest: 0.198, 0.23, 0.2, 0.081? (a) 0.198 (b) 0.23 (c) 0.2 (d) 0.081
  24. 24.3.94 + 2.6 = ? (a) 6.44 (b) 4.2 (c) 6.54 (d) 6.64
  25. 25.Which is the smallest: 0.264, 0.3, 0.038, 0.39? (a) 0.264 (b) 0.3 (c) 0.038 (d) 0.39
  26. 26.What is the value of the digit 3 in 37.158? (a) 0.03 (b) 30 (c) 0.3 (d) 3
  27. 27.Which is the greatest: 0.012, 0.174, 0.2, 0.25? (a) 0.012 (b) 0.174 (c) 0.2 (d) 0.25
  28. 28.4.31 + 8.4 = ? (a) 12.71 (b) 5.15 (c) 12.81 (d) 12.61
  29. 29.What is the value of the digit 3 in 13.826? (a) 0.03 (b) 0.3 (c) 30 (d) 3
  30. 30.What is the value of the digit 4 in 14.362? (a) 0.04 (b) 40 (c) 0.4 (d) 4
  31. 31.Which is the smallest: 0.5, 0.073, 0.52, 0.457? (a) 0.5 (b) 0.073 (c) 0.52 (d) 0.457
  32. 32.3.41 + 7.7 = ? (a) 4.18 (b) 11.21 (c) 11.11 (d) 11.01
  33. 33.8.86 + 1.4 = ? (a) 10.26 (b) 10.36 (c) 9 (d) 10.16
  34. 34.6.23 + 9.2 = ? (a) 15.33 (b) 7.15 (c) 15.53 (d) 15.43
  35. 35.What is the value of the digit 6 in 47.126? (a) 6 (b) 0.06 (c) 0.6 (d) 0.006
  36. 36.What is the value of the digit 4 in 74.512? (a) 4 (b) 0.04 (c) 40 (d) 0.4
  37. 37.What is the value of the digit 6 in 47.162? (a) 0.06 (b) 0.006 (c) 6 (d) 0.6
  38. 38.What is the value of the digit 5 in 81.356? (a) 0.05 (b) 0.5 (c) 5 (d) 0.005
  39. 39.4.99 + 8.5 = ? (a) 13.49 (b) 13.59 (c) 13.39 (d) 5.84
  40. 40.1.81 + 3.6 = ? (a) 5.51 (b) 5.41 (c) 5.31 (d) 2.17

Answer key

  1. 0.02
  2. 12.04
  3. 9.11
  4. 3.41
  5. 8.37
  6. 8.06
  7. 0.011
  8. 0.075
  9. 10.79
  10. 4.27
  11. 0.005
  12. 0.31
  13. 5.57
  14. 0.02
  15. 0.68
  16. 12.55
  17. 70
  18. 12.21
  19. 15.69
  20. 0.052
  21. 0.019
  22. 10.81
  23. 0.081
  24. 6.54
  25. 0.038
  26. 30
  27. 0.25
  28. 12.71
  29. 3
  30. 4
  31. 0.073
  32. 11.11
  33. 10.26
  34. 15.43
  35. 0.006
  36. 4
  37. 0.06
  38. 0.05
  39. 13.49
  40. 5.41

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