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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 107 · 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. 1.9.12 + 8.7 = ? (a) 17.72 (b) 17.92 (c) 17.82 (d) 9.99
  2. 2.9.29 + 2.4 = ? (a) 11.69 (b) 11.59 (c) 11.79 (d) 9.53
  3. 3.What is the value of the digit 4 in 58.741? (a) 4 (b) 0.04 (c) 0.4 (d) 0.004
  4. 4.Which is the greatest: 0.797, 0.84, 0.053, 0.8? (a) 0.797 (b) 0.84 (c) 0.053 (d) 0.8
  5. 5.Which is the greatest: 0.2, 0.26, 0.156, 0.035? (a) 0.2 (b) 0.26 (c) 0.156 (d) 0.035
  6. 6.5.23 + 4.8 = ? (a) 5.71 (b) 9.93 (c) 10.03 (d) 10.13
  7. 7.Which is the smallest: 0.4, 0.029, 0.343, 0.48? (a) 0.4 (b) 0.029 (c) 0.343 (d) 0.48
  8. 8.2.92 + 7.1 = ? (a) 10.02 (b) 10.12 (c) 3.63 (d) 9.92
  9. 9.2.47 + 4.9 = ? (a) 2.96 (b) 7.47 (c) 7.37 (d) 7.27
  10. 10.Which is the greatest: 0.48, 0.4, 0.348, 0.095? (a) 0.48 (b) 0.4 (c) 0.348 (d) 0.095
  11. 11.Which is the smallest: 0.65, 0.046, 0.6, 0.543? (a) 0.65 (b) 0.046 (c) 0.6 (d) 0.543
  12. 12.What is the value of the digit 6 in 43.926? (a) 6 (b) 0.6 (c) 0.006 (d) 0.06
  13. 13.Which is the greatest: 0.044, 0.7, 0.642, 0.79? (a) 0.044 (b) 0.7 (c) 0.642 (d) 0.79
  14. 14.What is the value of the digit 5 in 98.245? (a) 0.5 (b) 0.05 (c) 5 (d) 0.005
  15. 15.Which is the greatest: 0.189, 0.022, 0.26, 0.2? (a) 0.189 (b) 0.022 (c) 0.26 (d) 0.2
  16. 16.5.14 + 4.2 = ? (a) 9.34 (b) 9.24 (c) 9.44 (d) 5.56
  17. 17.2.72 + 6.9 = ? (a) 3.41 (b) 9.72 (c) 9.52 (d) 9.62
  18. 18.What is the value of the digit 7 in 17.392? (a) 0.07 (b) 0.7 (c) 7 (d) 70
  19. 19.1.82 + 9.1 = ? (a) 10.82 (b) 11.02 (c) 2.73 (d) 10.92
  20. 20.What is the value of the digit 5 in 58.372? (a) 50 (b) 0.5 (c) 5 (d) 0.05
  21. 21.2.64 + 2.4 = ? (a) 2.88 (b) 4.94 (c) 5.04 (d) 5.14
  22. 22.7.24 + 4.3 = ? (a) 11.64 (b) 11.54 (c) 11.44 (d) 7.67
  23. 23.8.68 + 2.7 = ? (a) 8.95 (b) 11.48 (c) 11.28 (d) 11.38
  24. 24.5.06 + 6.4 = ? (a) 11.36 (b) 5.7 (c) 11.56 (d) 11.46
  25. 25.Which is the greatest: 0.2, 0.146, 0.062, 0.28? (a) 0.2 (b) 0.146 (c) 0.062 (d) 0.28
  26. 26.What is the value of the digit 2 in 47.926? (a) 0.02 (b) 2 (c) 0.2 (d) 0.002
  27. 27.Which is the greatest: 0.5, 0.067, 0.497, 0.55? (a) 0.5 (b) 0.067 (c) 0.497 (d) 0.55
  28. 28.What is the value of the digit 4 in 34.217? (a) 40 (b) 4 (c) 0.4 (d) 0.04
  29. 29.6.22 + 3.4 = ? (a) 9.62 (b) 9.52 (c) 9.72 (d) 6.56
  30. 30.What is the value of the digit 1 in 29.615? (a) 0.01 (b) 0.001 (c) 1 (d) 0.1
  31. 31.Which is the greatest: 0.097, 0.292, 0.3, 0.37? (a) 0.097 (b) 0.292 (c) 0.3 (d) 0.37
  32. 32.Which is the greatest: 0.27, 0.048, 0.2, 0.124? (a) 0.27 (b) 0.048 (c) 0.2 (d) 0.124
  33. 33.2.03 + 4.5 = ? (a) 6.43 (b) 6.53 (c) 2.48 (d) 6.63
  34. 34.Which is the greatest: 0.042, 0.416, 0.56, 0.5? (a) 0.042 (b) 0.416 (c) 0.56 (d) 0.5
  35. 35.Which is the greatest: 0.5, 0.083, 0.488, 0.55? (a) 0.5 (b) 0.083 (c) 0.488 (d) 0.55
  36. 36.Which is the greatest: 0.7, 0.082, 0.617, 0.73? (a) 0.7 (b) 0.082 (c) 0.617 (d) 0.73
  37. 37.7.98 + 7.7 = ? (a) 8.75 (b) 15.58 (c) 15.78 (d) 15.68
  38. 38.What is the value of the digit 1 in 12.374? (a) 0.01 (b) 0.1 (c) 10 (d) 1
  39. 39.What is the value of the digit 1 in 81.365? (a) 0.01 (b) 0.1 (c) 1 (d) 10
  40. 40.7.62 + 2.2 = ? (a) 9.72 (b) 7.84 (c) 9.92 (d) 9.82

Answer key

  1. 17.82
  2. 11.69
  3. 0.04
  4. 0.84
  5. 0.26
  6. 10.03
  7. 0.029
  8. 10.02
  9. 7.37
  10. 0.48
  11. 0.046
  12. 0.006
  13. 0.79
  14. 0.005
  15. 0.26
  16. 9.34
  17. 9.62
  18. 7
  19. 10.92
  20. 50
  21. 5.04
  22. 11.54
  23. 11.38
  24. 11.46
  25. 0.28
  26. 0.02
  27. 0.55
  28. 4
  29. 9.62
  30. 0.01
  31. 0.37
  32. 0.27
  33. 6.53
  34. 0.56
  35. 0.55
  36. 0.73
  37. 15.68
  38. 10
  39. 1
  40. 9.82

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