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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 683 · 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. 1.1.95 + 2.4 = ? (a) 2.19 (b) 4.25 (c) 4.45 (d) 4.35
  2. 2.9.21 + 9.1 = ? (a) 18.41 (b) 10.12 (c) 18.21 (d) 18.31
  3. 3.Which is the greatest: 0.724, 0.017, 0.88, 0.8? (a) 0.724 (b) 0.017 (c) 0.88 (d) 0.8
  4. 4.Which is the smallest: 0.88, 0.721, 0.028, 0.8? (a) 0.88 (b) 0.721 (c) 0.028 (d) 0.8
  5. 5.3.06 + 5.9 = ? (a) 8.96 (b) 3.65 (c) 9.06 (d) 8.86
  6. 6.What is the value of the digit 6 in 72.684? (a) 0.06 (b) 6 (c) 0.6 (d) 0.006
  7. 7.Which is the greatest: 0.195, 0.24, 0.2, 0.025? (a) 0.195 (b) 0.24 (c) 0.2 (d) 0.025
  8. 8.5.71 + 9.1 = ? (a) 14.91 (b) 14.81 (c) 6.62 (d) 14.71
  9. 9.1.67 + 8.1 = ? (a) 9.87 (b) 9.77 (c) 9.67 (d) 2.48
  10. 10.What is the value of the digit 6 in 14.236? (a) 0.6 (b) 0.06 (c) 0.006 (d) 6
  11. 11.4.34 + 5.4 = ? (a) 9.64 (b) 4.88 (c) 9.84 (d) 9.74
  12. 12.4.31 + 2.9 = ? (a) 7.11 (b) 7.21 (c) 4.6 (d) 7.31
  13. 13.Which is the smallest: 0.8, 0.752, 0.029, 0.88? (a) 0.8 (b) 0.752 (c) 0.029 (d) 0.88
  14. 14.Which is the smallest: 0.543, 0.082, 0.6, 0.68? (a) 0.543 (b) 0.082 (c) 0.6 (d) 0.68
  15. 15.2.51 + 1.7 = ? (a) 4.31 (b) 4.11 (c) 2.68 (d) 4.21
  16. 16.6.02 + 4.1 = ? (a) 6.43 (b) 10.02 (c) 10.22 (d) 10.12
  17. 17.2.48 + 3.8 = ? (a) 2.86 (b) 6.28 (c) 6.38 (d) 6.18
  18. 18.Which is the smallest: 0.026, 0.3, 0.292, 0.32? (a) 0.026 (b) 0.3 (c) 0.292 (d) 0.32
  19. 19.6.36 + 3.2 = ? (a) 6.68 (b) 9.66 (c) 9.46 (d) 9.56
  20. 20.6.63 + 1.1 = ? (a) 6.74 (b) 7.83 (c) 7.63 (d) 7.73
  21. 21.Which is the smallest: 0.662, 0.78, 0.064, 0.7? (a) 0.662 (b) 0.78 (c) 0.064 (d) 0.7
  22. 22.6.38 + 5.8 = ? (a) 6.96 (b) 12.08 (c) 12.18 (d) 12.28
  23. 23.What is the value of the digit 5 in 62.735? (a) 0.5 (b) 5 (c) 0.05 (d) 0.005
  24. 24.5.11 + 1.4 = ? (a) 5.25 (b) 6.61 (c) 6.41 (d) 6.51
  25. 25.What is the value of the digit 7 in 82.971? (a) 0.7 (b) 0.07 (c) 0.007 (d) 7
  26. 26.What is the value of the digit 1 in 14.892? (a) 1 (b) 0.01 (c) 0.1 (d) 10
  27. 27.Which is the smallest: 0.69, 0.6, 0.053, 0.532? (a) 0.69 (b) 0.6 (c) 0.053 (d) 0.532
  28. 28.Which is the smallest: 0.036, 0.76, 0.623, 0.7? (a) 0.036 (b) 0.76 (c) 0.623 (d) 0.7
  29. 29.What is the value of the digit 2 in 52.469? (a) 0.2 (b) 2 (c) 0.02 (d) 20
  30. 30.Which is the smallest: 0.418, 0.5, 0.061, 0.51? (a) 0.418 (b) 0.5 (c) 0.061 (d) 0.51
  31. 31.What is the value of the digit 6 in 72.196? (a) 0.06 (b) 0.6 (c) 0.006 (d) 6
  32. 32.Which is the smallest: 0.633, 0.041, 0.7, 0.72? (a) 0.633 (b) 0.041 (c) 0.7 (d) 0.72
  33. 33.1.47 + 1.9 = ? (a) 3.37 (b) 3.27 (c) 1.66 (d) 3.47
  34. 34.Which is the greatest: 0.074, 0.341, 0.42, 0.4? (a) 0.074 (b) 0.341 (c) 0.42 (d) 0.4
  35. 35.What is the value of the digit 8 in 25.486? (a) 0.08 (b) 0.008 (c) 0.8 (d) 8
  36. 36.Which is the greatest: 0.663, 0.75, 0.018, 0.7? (a) 0.663 (b) 0.75 (c) 0.018 (d) 0.7
  37. 37.Which is the greatest: 0.33, 0.247, 0.074, 0.3? (a) 0.33 (b) 0.247 (c) 0.074 (d) 0.3
  38. 38.What is the value of the digit 4 in 54.178? (a) 4 (b) 0.4 (c) 40 (d) 0.04
  39. 39.4.59 + 3.6 = ? (a) 8.09 (b) 8.19 (c) 8.29 (d) 4.95
  40. 40.What is the value of the digit 3 in 51.396? (a) 0.03 (b) 0.003 (c) 3 (d) 0.3

Answer key

  1. 4.35
  2. 18.31
  3. 0.88
  4. 0.028
  5. 8.96
  6. 0.6
  7. 0.24
  8. 14.81
  9. 9.77
  10. 0.006
  11. 9.74
  12. 7.21
  13. 0.029
  14. 0.082
  15. 4.21
  16. 10.12
  17. 6.28
  18. 0.026
  19. 9.56
  20. 7.73
  21. 0.064
  22. 12.18
  23. 0.005
  24. 6.51
  25. 0.07
  26. 10
  27. 0.053
  28. 0.036
  29. 2
  30. 0.061
  31. 0.006
  32. 0.041
  33. 3.37
  34. 0.42
  35. 0.08
  36. 0.75
  37. 0.33
  38. 4
  39. 8.19
  40. 0.3

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