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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 622 · 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 1 in 81.562? (a) 1 (b) 0.01 (c) 10 (d) 0.1
  2. 2.Which is the smallest: 0.79, 0.619, 0.028, 0.7? (a) 0.79 (b) 0.619 (c) 0.028 (d) 0.7
  3. 3.3.09 + 9.6 = ? (a) 12.59 (b) 12.69 (c) 4.05 (d) 12.79
  4. 4.What is the value of the digit 3 in 67.132? (a) 3 (b) 0.03 (c) 0.003 (d) 0.3
  5. 5.9.01 + 7.8 = ? (a) 9.79 (b) 16.91 (c) 16.81 (d) 16.71
  6. 6.2.86 + 4.4 = ? (a) 7.16 (b) 7.36 (c) 3.3 (d) 7.26
  7. 7.8.55 + 7.5 = ? (a) 16.15 (b) 15.95 (c) 16.05 (d) 9.3
  8. 8.8.11 + 4.9 = ? (a) 13.11 (b) 8.6 (c) 12.91 (d) 13.01
  9. 9.8.61 + 9.9 = ? (a) 9.6 (b) 18.41 (c) 18.51 (d) 18.61
  10. 10.What is the value of the digit 8 in 79.853? (a) 0.008 (b) 8 (c) 0.8 (d) 0.08
  11. 11.6.91 + 6.5 = ? (a) 13.51 (b) 7.56 (c) 13.41 (d) 13.31
  12. 12.Which is the smallest: 0.737, 0.87, 0.031, 0.8? (a) 0.737 (b) 0.87 (c) 0.031 (d) 0.8
  13. 13.9.75 + 2.8 = ? (a) 10.03 (b) 12.45 (c) 12.55 (d) 12.65
  14. 14.Which is the greatest: 0.5, 0.59, 0.076, 0.477? (a) 0.5 (b) 0.59 (c) 0.076 (d) 0.477
  15. 15.What is the value of the digit 2 in 42.953? (a) 0.2 (b) 0.02 (c) 20 (d) 2
  16. 16.What is the value of the digit 6 in 26.147? (a) 60 (b) 6 (c) 0.6 (d) 0.06
  17. 17.3.16 + 7.5 = ? (a) 10.76 (b) 3.91 (c) 10.56 (d) 10.66
  18. 18.5.49 + 7.1 = ? (a) 6.2 (b) 12.59 (c) 12.69 (d) 12.49
  19. 19.What is the value of the digit 4 in 23.417? (a) 0.04 (b) 0.004 (c) 0.4 (d) 4
  20. 20.Which is the greatest: 0.077, 0.7, 0.632, 0.79? (a) 0.077 (b) 0.7 (c) 0.632 (d) 0.79
  21. 21.Which is the smallest: 0.7, 0.083, 0.77, 0.618? (a) 0.7 (b) 0.083 (c) 0.77 (d) 0.618
  22. 22.What is the value of the digit 9 in 98.751? (a) 0.9 (b) 0.09 (c) 9 (d) 90
  23. 23.Which is the smallest: 0.3, 0.32, 0.264, 0.058? (a) 0.3 (b) 0.32 (c) 0.264 (d) 0.058
  24. 24.2.68 + 6.3 = ? (a) 8.88 (b) 9.08 (c) 8.98 (d) 3.31
  25. 25.Which is the smallest: 0.614, 0.086, 0.7, 0.71? (a) 0.614 (b) 0.086 (c) 0.7 (d) 0.71
  26. 26.9.14 + 3.6 = ? (a) 12.64 (b) 9.5 (c) 12.74 (d) 12.84
  27. 27.1.85 + 6.1 = ? (a) 7.85 (b) 2.46 (c) 8.05 (d) 7.95
  28. 28.3.18 + 4.3 = ? (a) 7.38 (b) 7.48 (c) 7.58 (d) 3.61
  29. 29.Which is the smallest: 0.56, 0.097, 0.5, 0.432? (a) 0.56 (b) 0.097 (c) 0.5 (d) 0.432
  30. 30.Which is the greatest: 0.53, 0.455, 0.078, 0.5? (a) 0.53 (b) 0.455 (c) 0.078 (d) 0.5
  31. 31.Which is the greatest: 0.8, 0.88, 0.038, 0.715? (a) 0.8 (b) 0.88 (c) 0.038 (d) 0.715
  32. 32.Which is the greatest: 0.7, 0.695, 0.72, 0.079? (a) 0.7 (b) 0.695 (c) 0.72 (d) 0.079
  33. 33.Which is the smallest: 0.26, 0.2, 0.076, 0.157? (a) 0.26 (b) 0.2 (c) 0.076 (d) 0.157
  34. 34.5.44 + 7.1 = ? (a) 6.15 (b) 12.44 (c) 12.64 (d) 12.54
  35. 35.1.19 + 8.8 = ? (a) 10.09 (b) 2.07 (c) 9.99 (d) 9.89
  36. 36.7.91 + 1.2 = ? (a) 9.21 (b) 9.11 (c) 8.03 (d) 9.01
  37. 37.What is the value of the digit 3 in 67.213? (a) 0.03 (b) 0.003 (c) 3 (d) 0.3
  38. 38.6.04 + 7.7 = ? (a) 13.64 (b) 13.84 (c) 13.74 (d) 6.81
  39. 39.6.86 + 3.8 = ? (a) 10.56 (b) 10.76 (c) 7.24 (d) 10.66
  40. 40.9.79 + 2.2 = ? (a) 12.09 (b) 10.01 (c) 11.99 (d) 11.89

Answer key

  1. 1
  2. 0.028
  3. 12.69
  4. 0.03
  5. 16.81
  6. 7.26
  7. 16.05
  8. 13.01
  9. 18.51
  10. 0.8
  11. 13.41
  12. 0.031
  13. 12.55
  14. 0.59
  15. 2
  16. 6
  17. 10.66
  18. 12.59
  19. 0.4
  20. 0.79
  21. 0.083
  22. 90
  23. 0.058
  24. 8.98
  25. 0.086
  26. 12.74
  27. 7.95
  28. 7.48
  29. 0.097
  30. 0.53
  31. 0.88
  32. 0.72
  33. 0.076
  34. 12.54
  35. 9.99
  36. 9.11
  37. 0.003
  38. 13.74
  39. 10.66
  40. 11.99

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