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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 172 · 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 7 in 34.728? (a) 0.007 (b) 0.7 (c) 7 (d) 0.07
  2. 2.8.07 + 2.1 = ? (a) 10.27 (b) 10.07 (c) 10.17 (d) 8.28
  3. 3.6.12 + 5.6 = ? (a) 11.62 (b) 6.68 (c) 11.72 (d) 11.82
  4. 4.What is the value of the digit 1 in 76.415? (a) 0.1 (b) 1 (c) 0.001 (d) 0.01
  5. 5.What is the value of the digit 4 in 69.143? (a) 0.004 (b) 0.4 (c) 0.04 (d) 4
  6. 6.Which is the greatest: 0.65, 0.6, 0.054, 0.562? (a) 0.65 (b) 0.6 (c) 0.054 (d) 0.562
  7. 7.1.45 + 6.7 = ? (a) 8.15 (b) 2.12 (c) 8.05 (d) 8.25
  8. 8.What is the value of the digit 9 in 96.187? (a) 0.09 (b) 90 (c) 9 (d) 0.9
  9. 9.Which is the greatest: 0.052, 0.75, 0.689, 0.7? (a) 0.052 (b) 0.75 (c) 0.689 (d) 0.7
  10. 10.7.11 + 8.9 = ? (a) 8 (b) 16.01 (c) 16.11 (d) 15.91
  11. 11.3.51 + 3.8 = ? (a) 7.41 (b) 7.21 (c) 3.89 (d) 7.31
  12. 12.6.37 + 4.4 = ? (a) 10.87 (b) 6.81 (c) 10.67 (d) 10.77
  13. 13.2.09 + 1.8 = ? (a) 3.99 (b) 3.89 (c) 2.27 (d) 3.79
  14. 14.Which is the greatest: 0.715, 0.85, 0.039, 0.8? (a) 0.715 (b) 0.85 (c) 0.039 (d) 0.8
  15. 15.What is the value of the digit 1 in 48.129? (a) 0.001 (b) 1 (c) 0.1 (d) 0.01
  16. 16.Which is the greatest: 0.21, 0.082, 0.184, 0.2? (a) 0.21 (b) 0.082 (c) 0.184 (d) 0.2
  17. 17.3.07 + 3.5 = ? (a) 3.42 (b) 6.47 (c) 6.67 (d) 6.57
  18. 18.Which is the smallest: 0.4, 0.46, 0.057, 0.347? (a) 0.4 (b) 0.46 (c) 0.057 (d) 0.347
  19. 19.What is the value of the digit 2 in 72.681? (a) 0.02 (b) 2 (c) 20 (d) 0.2
  20. 20.Which is the greatest: 0.33, 0.255, 0.066, 0.3? (a) 0.33 (b) 0.255 (c) 0.066 (d) 0.3
  21. 21.What is the value of the digit 6 in 56.138? (a) 60 (b) 0.6 (c) 0.06 (d) 6
  22. 22.7.94 + 4.7 = ? (a) 12.54 (b) 12.64 (c) 8.41 (d) 12.74
  23. 23.4.18 + 6.1 = ? (a) 10.18 (b) 10.28 (c) 10.38 (d) 4.79
  24. 24.3.17 + 1.1 = ? (a) 4.27 (b) 3.28 (c) 4.37 (d) 4.17
  25. 25.Which is the smallest: 0.6, 0.65, 0.016, 0.529? (a) 0.6 (b) 0.65 (c) 0.016 (d) 0.529
  26. 26.2.79 + 9.1 = ? (a) 3.7 (b) 11.79 (c) 11.89 (d) 11.99
  27. 27.1.79 + 1.9 = ? (a) 3.59 (b) 3.69 (c) 3.79 (d) 1.98
  28. 28.Which is the greatest: 0.031, 0.81, 0.711, 0.8? (a) 0.031 (b) 0.81 (c) 0.711 (d) 0.8
  29. 29.3.11 + 3.3 = ? (a) 6.31 (b) 6.51 (c) 6.41 (d) 3.44
  30. 30.Which is the greatest: 0.61, 0.587, 0.045, 0.6? (a) 0.61 (b) 0.587 (c) 0.045 (d) 0.6
  31. 31.Which is the greatest: 0.69, 0.6, 0.513, 0.036? (a) 0.69 (b) 0.6 (c) 0.513 (d) 0.036
  32. 32.2.56 + 9.3 = ? (a) 11.96 (b) 11.86 (c) 3.49 (d) 11.76
  33. 33.What is the value of the digit 5 in 72.495? (a) 0.005 (b) 5 (c) 0.5 (d) 0.05
  34. 34.4.39 + 5.5 = ? (a) 4.94 (b) 9.89 (c) 9.99 (d) 9.79
  35. 35.4.46 + 5.1 = ? (a) 9.56 (b) 4.97 (c) 9.46 (d) 9.66
  36. 36.4.01 + 6.1 = ? (a) 10.21 (b) 10.11 (c) 4.62 (d) 10.01
  37. 37.Which is the smallest: 0.51, 0.462, 0.045, 0.5? (a) 0.51 (b) 0.462 (c) 0.045 (d) 0.5
  38. 38.What is the value of the digit 3 in 19.385? (a) 0.003 (b) 0.03 (c) 3 (d) 0.3
  39. 39.Which is the smallest: 0.273, 0.37, 0.057, 0.3? (a) 0.273 (b) 0.37 (c) 0.057 (d) 0.3
  40. 40.Which is the smallest: 0.44, 0.347, 0.065, 0.4? (a) 0.44 (b) 0.347 (c) 0.065 (d) 0.4

Answer key

  1. 0.7
  2. 10.17
  3. 11.72
  4. 0.01
  5. 0.04
  6. 0.65
  7. 8.15
  8. 90
  9. 0.75
  10. 16.01
  11. 7.31
  12. 10.77
  13. 3.89
  14. 0.85
  15. 0.1
  16. 0.21
  17. 6.57
  18. 0.057
  19. 2
  20. 0.33
  21. 6
  22. 12.64
  23. 10.28
  24. 4.27
  25. 0.016
  26. 11.89
  27. 3.69
  28. 0.81
  29. 6.41
  30. 0.61
  31. 0.69
  32. 11.86
  33. 0.005
  34. 9.89
  35. 9.56
  36. 10.11
  37. 0.045
  38. 0.3
  39. 0.057
  40. 0.065

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