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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 388 · 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. 1.1.54 + 6.7 = ? (a) 8.14 (b) 8.34 (c) 8.24 (d) 2.21
  2. 2.Which is the smallest: 0.79, 0.619, 0.7, 0.056? (a) 0.79 (b) 0.619 (c) 0.7 (d) 0.056
  3. 3.Which is the smallest: 0.029, 0.411, 0.58, 0.5? (a) 0.029 (b) 0.411 (c) 0.58 (d) 0.5
  4. 4.2.96 + 7.8 = ? (a) 3.74 (b) 10.86 (c) 10.66 (d) 10.76
  5. 5.What is the value of the digit 9 in 72.953? (a) 0.009 (b) 0.09 (c) 9 (d) 0.9
  6. 6.What is the value of the digit 5 in 23.517? (a) 5 (b) 0.005 (c) 0.05 (d) 0.5
  7. 7.1.11 + 1.5 = ? (a) 1.26 (b) 2.51 (c) 2.61 (d) 2.71
  8. 8.What is the value of the digit 5 in 94.235? (a) 5 (b) 0.05 (c) 0.5 (d) 0.005
  9. 9.Which is the smallest: 0.068, 0.224, 0.32, 0.3? (a) 0.068 (b) 0.224 (c) 0.32 (d) 0.3
  10. 10.What is the value of the digit 1 in 49.831? (a) 0.01 (b) 0.1 (c) 0.001 (d) 1
  11. 11.What is the value of the digit 7 in 75.148? (a) 70 (b) 0.07 (c) 0.7 (d) 7
  12. 12.Which is the smallest: 0.571, 0.028, 0.63, 0.6? (a) 0.571 (b) 0.028 (c) 0.63 (d) 0.6
  13. 13.5.35 + 6.1 = ? (a) 5.96 (b) 11.35 (c) 11.55 (d) 11.45
  14. 14.What is the value of the digit 8 in 42.893? (a) 0.008 (b) 8 (c) 0.8 (d) 0.08
  15. 15.9.34 + 2.5 = ? (a) 9.59 (b) 11.74 (c) 11.84 (d) 11.94
  16. 16.6.41 + 1.1 = ? (a) 6.52 (b) 7.51 (c) 7.61 (d) 7.41
  17. 17.What is the value of the digit 9 in 98.456? (a) 0.9 (b) 9 (c) 0.09 (d) 90
  18. 18.What is the value of the digit 8 in 89.423? (a) 80 (b) 8 (c) 0.08 (d) 0.8
  19. 19.6.65 + 3.1 = ? (a) 9.65 (b) 6.96 (c) 9.75 (d) 9.85
  20. 20.5.68 + 6.8 = ? (a) 12.48 (b) 6.36 (c) 12.38 (d) 12.58
  21. 21.2.96 + 6.2 = ? (a) 9.26 (b) 9.06 (c) 9.16 (d) 3.58
  22. 22.What is the value of the digit 9 in 42.976? (a) 9 (b) 0.009 (c) 0.09 (d) 0.9
  23. 23.Which is the greatest: 0.157, 0.24, 0.036, 0.2? (a) 0.157 (b) 0.24 (c) 0.036 (d) 0.2
  24. 24.5.87 + 9.1 = ? (a) 15.07 (b) 6.78 (c) 14.87 (d) 14.97
  25. 25.7.92 + 6.4 = ? (a) 8.56 (b) 14.22 (c) 14.32 (d) 14.42
  26. 26.Which is the greatest: 0.8, 0.88, 0.788, 0.037? (a) 0.8 (b) 0.88 (c) 0.788 (d) 0.037
  27. 27.6.08 + 1.9 = ? (a) 8.08 (b) 7.98 (c) 7.88 (d) 6.27
  28. 28.4.21 + 2.5 = ? (a) 6.61 (b) 6.71 (c) 4.46 (d) 6.81
  29. 29.What is the value of the digit 2 in 76.842? (a) 2 (b) 0.2 (c) 0.002 (d) 0.02
  30. 30.What is the value of the digit 2 in 97.261? (a) 0.02 (b) 2 (c) 0.002 (d) 0.2
  31. 31.Which is the smallest: 0.6, 0.61, 0.537, 0.026? (a) 0.6 (b) 0.61 (c) 0.537 (d) 0.026
  32. 32.What is the value of the digit 6 in 69.482? (a) 0.6 (b) 6 (c) 60 (d) 0.06
  33. 33.Which is the smallest: 0.519, 0.68, 0.6, 0.037? (a) 0.519 (b) 0.68 (c) 0.6 (d) 0.037
  34. 34.Which is the smallest: 0.022, 0.33, 0.3, 0.211? (a) 0.022 (b) 0.33 (c) 0.3 (d) 0.211
  35. 35.Which is the greatest: 0.685, 0.7, 0.79, 0.079? (a) 0.685 (b) 0.7 (c) 0.79 (d) 0.079
  36. 36.Which is the greatest: 0.72, 0.031, 0.669, 0.7? (a) 0.72 (b) 0.031 (c) 0.669 (d) 0.7
  37. 37.3.27 + 7.4 = ? (a) 10.77 (b) 4.01 (c) 10.57 (d) 10.67
  38. 38.6.91 + 2.1 = ? (a) 8.91 (b) 9.11 (c) 9.01 (d) 7.12
  39. 39.What is the value of the digit 7 in 97.638? (a) 0.07 (b) 0.7 (c) 70 (d) 7
  40. 40.5.93 + 1.9 = ? (a) 7.83 (b) 7.73 (c) 6.12 (d) 7.93

Answer key

  1. 8.24
  2. 0.056
  3. 0.029
  4. 10.76
  5. 0.9
  6. 0.5
  7. 2.61
  8. 0.005
  9. 0.068
  10. 0.001
  11. 70
  12. 0.028
  13. 11.45
  14. 0.8
  15. 11.84
  16. 7.51
  17. 90
  18. 80
  19. 9.75
  20. 12.48
  21. 9.16
  22. 0.9
  23. 0.24
  24. 14.97
  25. 14.32
  26. 0.88
  27. 7.98
  28. 6.71
  29. 0.002
  30. 0.2
  31. 0.026
  32. 60
  33. 0.037
  34. 0.022
  35. 0.79
  36. 0.72
  37. 10.67
  38. 9.01
  39. 7
  40. 7.83

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