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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 562 · 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. 1.8.14 + 1.8 = ? (a) 8.32 (b) 9.84 (c) 9.94 (d) 10.04
  2. 2.What is the value of the digit 2 in 78.241? (a) 0.02 (b) 0.002 (c) 2 (d) 0.2
  3. 3.5.68 + 3.3 = ? (a) 8.88 (b) 8.98 (c) 6.01 (d) 9.08
  4. 4.2.71 + 7.7 = ? (a) 10.41 (b) 10.31 (c) 10.51 (d) 3.48
  5. 5.What is the value of the digit 6 in 84.651? (a) 0.06 (b) 0.006 (c) 0.6 (d) 6
  6. 6.7.35 + 4.1 = ? (a) 11.35 (b) 7.76 (c) 11.45 (d) 11.55
  7. 7.Which is the greatest: 0.017, 0.599, 0.6, 0.65? (a) 0.017 (b) 0.599 (c) 0.6 (d) 0.65
  8. 8.Which is the smallest: 0.55, 0.5, 0.041, 0.467? (a) 0.55 (b) 0.5 (c) 0.041 (d) 0.467
  9. 9.What is the value of the digit 7 in 27.189? (a) 7 (b) 0.07 (c) 70 (d) 0.7
  10. 10.What is the value of the digit 7 in 97.621? (a) 70 (b) 7 (c) 0.7 (d) 0.07
  11. 11.8.37 + 3.7 = ? (a) 11.97 (b) 8.74 (c) 12.17 (d) 12.07
  12. 12.What is the value of the digit 8 in 71.389? (a) 0.8 (b) 0.08 (c) 0.008 (d) 8
  13. 13.7.59 + 6.1 = ? (a) 8.2 (b) 13.79 (c) 13.59 (d) 13.69
  14. 14.Which is the greatest: 0.042, 0.35, 0.3, 0.261? (a) 0.042 (b) 0.35 (c) 0.3 (d) 0.261
  15. 15.7.04 + 2.9 = ? (a) 10.04 (b) 9.94 (c) 7.33 (d) 9.84
  16. 16.4.45 + 5.3 = ? (a) 9.75 (b) 9.85 (c) 9.65 (d) 4.98
  17. 17.Which is the greatest: 0.28, 0.031, 0.2, 0.124? (a) 0.28 (b) 0.031 (c) 0.2 (d) 0.124
  18. 18.Which is the smallest: 0.8, 0.726, 0.078, 0.88? (a) 0.8 (b) 0.726 (c) 0.078 (d) 0.88
  19. 19.Which is the greatest: 0.2, 0.27, 0.156, 0.091? (a) 0.2 (b) 0.27 (c) 0.156 (d) 0.091
  20. 20.Which is the smallest: 0.8, 0.094, 0.86, 0.774? (a) 0.8 (b) 0.094 (c) 0.86 (d) 0.774
  21. 21.What is the value of the digit 4 in 98.154? (a) 0.4 (b) 0.004 (c) 0.04 (d) 4
  22. 22.Which is the smallest: 0.4, 0.043, 0.44, 0.322? (a) 0.4 (b) 0.043 (c) 0.44 (d) 0.322
  23. 23.Which is the smallest: 0.129, 0.046, 0.2, 0.21? (a) 0.129 (b) 0.046 (c) 0.2 (d) 0.21
  24. 24.Which is the greatest: 0.4, 0.42, 0.348, 0.082? (a) 0.4 (b) 0.42 (c) 0.348 (d) 0.082
  25. 25.What is the value of the digit 8 in 65.781? (a) 0.08 (b) 0.008 (c) 8 (d) 0.8
  26. 26.What is the value of the digit 2 in 37.982? (a) 0.2 (b) 2 (c) 0.002 (d) 0.02
  27. 27.8.27 + 8.9 = ? (a) 17.17 (b) 9.16 (c) 17.07 (d) 17.27
  28. 28.What is the value of the digit 9 in 17.952? (a) 9 (b) 0.09 (c) 0.9 (d) 0.009
  29. 29.5.77 + 1.9 = ? (a) 7.77 (b) 7.67 (c) 5.96 (d) 7.57
  30. 30.2.67 + 9.8 = ? (a) 12.37 (b) 12.57 (c) 12.47 (d) 3.65
  31. 31.7.25 + 8.1 = ? (a) 8.06 (b) 15.35 (c) 15.45 (d) 15.25
  32. 32.3.48 + 6.7 = ? (a) 4.15 (b) 10.18 (c) 10.08 (d) 10.28
  33. 33.Which is the greatest: 0.7, 0.75, 0.663, 0.018? (a) 0.7 (b) 0.75 (c) 0.663 (d) 0.018
  34. 34.3.49 + 6.5 = ? (a) 4.14 (b) 10.09 (c) 9.89 (d) 9.99
  35. 35.Which is the greatest: 0.371, 0.051, 0.43, 0.4? (a) 0.371 (b) 0.051 (c) 0.43 (d) 0.4
  36. 36.Which is the greatest: 0.8, 0.725, 0.066, 0.87? (a) 0.8 (b) 0.725 (c) 0.066 (d) 0.87
  37. 37.Which is the greatest: 0.2, 0.22, 0.043, 0.164? (a) 0.2 (b) 0.22 (c) 0.043 (d) 0.164
  38. 38.Which is the greatest: 0.119, 0.089, 0.27, 0.2? (a) 0.119 (b) 0.089 (c) 0.27 (d) 0.2
  39. 39.4.63 + 7.1 = ? (a) 11.83 (b) 11.73 (c) 5.34 (d) 11.63
  40. 40.7.61 + 1.9 = ? (a) 7.8 (b) 9.51 (c) 9.41 (d) 9.61

Answer key

  1. 9.94
  2. 0.2
  3. 8.98
  4. 10.41
  5. 0.6
  6. 11.45
  7. 0.65
  8. 0.041
  9. 7
  10. 7
  11. 12.07
  12. 0.08
  13. 13.69
  14. 0.35
  15. 9.94
  16. 9.75
  17. 0.28
  18. 0.078
  19. 0.27
  20. 0.094
  21. 0.004
  22. 0.043
  23. 0.046
  24. 0.42
  25. 0.08
  26. 0.002
  27. 17.17
  28. 0.9
  29. 7.67
  30. 12.47
  31. 15.35
  32. 10.18
  33. 0.75
  34. 9.99
  35. 0.43
  36. 0.87
  37. 0.22
  38. 0.27
  39. 11.73
  40. 9.51

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