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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 508 · 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. 1.5.19 + 4.8 = ? (a) 9.99 (b) 5.67 (c) 10.09 (d) 9.89
  2. 2.What is the value of the digit 5 in 31.456? (a) 5 (b) 0.005 (c) 0.05 (d) 0.5
  3. 3.Which is the smallest: 0.428, 0.5, 0.021, 0.57? (a) 0.428 (b) 0.5 (c) 0.021 (d) 0.57
  4. 4.What is the value of the digit 5 in 25.893? (a) 0.5 (b) 5 (c) 50 (d) 0.05
  5. 5.What is the value of the digit 4 in 95.473? (a) 4 (b) 0.4 (c) 0.004 (d) 0.04
  6. 6.Which is the smallest: 0.63, 0.043, 0.6, 0.555? (a) 0.63 (b) 0.043 (c) 0.6 (d) 0.555
  7. 7.What is the value of the digit 3 in 34.279? (a) 3 (b) 0.3 (c) 30 (d) 0.03
  8. 8.Which is the greatest: 0.81, 0.013, 0.8, 0.711? (a) 0.81 (b) 0.013 (c) 0.8 (d) 0.711
  9. 9.6.01 + 2.1 = ? (a) 6.22 (b) 8.01 (c) 8.21 (d) 8.11
  10. 10.Which is the smallest: 0.66, 0.013, 0.6, 0.565? (a) 0.66 (b) 0.013 (c) 0.6 (d) 0.565
  11. 11.What is the value of the digit 7 in 41.785? (a) 0.007 (b) 7 (c) 0.7 (d) 0.07
  12. 12.6.29 + 3.4 = ? (a) 9.59 (b) 9.79 (c) 6.63 (d) 9.69
  13. 13.3.75 + 3.2 = ? (a) 7.05 (b) 6.85 (c) 6.95 (d) 4.07
  14. 14.1.22 + 9.2 = ? (a) 10.52 (b) 10.32 (c) 2.14 (d) 10.42
  15. 15.7.41 + 2.4 = ? (a) 9.81 (b) 9.71 (c) 7.65 (d) 9.91
  16. 16.9.63 + 3.3 = ? (a) 13.03 (b) 12.93 (c) 9.96 (d) 12.83
  17. 17.What is the value of the digit 3 in 31.682? (a) 0.03 (b) 30 (c) 0.3 (d) 3
  18. 18.2.12 + 6.1 = ? (a) 8.12 (b) 2.73 (c) 8.32 (d) 8.22
  19. 19.What is the value of the digit 2 in 38.942? (a) 0.002 (b) 0.02 (c) 0.2 (d) 2
  20. 20.Which is the greatest: 0.2, 0.044, 0.28, 0.165? (a) 0.2 (b) 0.044 (c) 0.28 (d) 0.165
  21. 21.Which is the greatest: 0.686, 0.7, 0.047, 0.72? (a) 0.686 (b) 0.7 (c) 0.047 (d) 0.72
  22. 22.Which is the smallest: 0.63, 0.039, 0.6, 0.579? (a) 0.63 (b) 0.039 (c) 0.6 (d) 0.579
  23. 23.What is the value of the digit 8 in 17.384? (a) 0.08 (b) 8 (c) 0.8 (d) 0.008
  24. 24.Which is the greatest: 0.63, 0.578, 0.6, 0.035? (a) 0.63 (b) 0.578 (c) 0.6 (d) 0.035
  25. 25.What is the value of the digit 2 in 98.542? (a) 0.2 (b) 2 (c) 0.002 (d) 0.02
  26. 26.3.76 + 8.1 = ? (a) 11.86 (b) 4.57 (c) 11.76 (d) 11.96
  27. 27.Which is the smallest: 0.675, 0.76, 0.041, 0.7? (a) 0.675 (b) 0.76 (c) 0.041 (d) 0.7
  28. 28.Which is the smallest: 0.71, 0.688, 0.7, 0.098? (a) 0.71 (b) 0.688 (c) 0.7 (d) 0.098
  29. 29.What is the value of the digit 7 in 24.783? (a) 7 (b) 0.7 (c) 0.07 (d) 0.007
  30. 30.What is the value of the digit 7 in 67.835? (a) 70 (b) 0.07 (c) 7 (d) 0.7
  31. 31.What is the value of the digit 3 in 59.327? (a) 0.003 (b) 3 (c) 0.3 (d) 0.03
  32. 32.Which is the smallest: 0.041, 0.752, 0.8, 0.85? (a) 0.041 (b) 0.752 (c) 0.8 (d) 0.85
  33. 33.Which is the greatest: 0.7, 0.055, 0.664, 0.75? (a) 0.7 (b) 0.055 (c) 0.664 (d) 0.75
  34. 34.5.45 + 6.6 = ? (a) 11.95 (b) 12.05 (c) 6.11 (d) 12.15
  35. 35.Which is the greatest: 0.25, 0.071, 0.174, 0.2? (a) 0.25 (b) 0.071 (c) 0.174 (d) 0.2
  36. 36.Which is the greatest: 0.329, 0.4, 0.087, 0.48? (a) 0.329 (b) 0.4 (c) 0.087 (d) 0.48
  37. 37.2.71 + 3.6 = ? (a) 6.21 (b) 3.07 (c) 6.41 (d) 6.31
  38. 38.9.91 + 3.7 = ? (a) 13.51 (b) 13.71 (c) 10.28 (d) 13.61
  39. 39.5.47 + 7.1 = ? (a) 12.47 (b) 12.67 (c) 12.57 (d) 6.18
  40. 40.Which is the greatest: 0.032, 0.58, 0.441, 0.5? (a) 0.032 (b) 0.58 (c) 0.441 (d) 0.5

Answer key

  1. 9.99
  2. 0.05
  3. 0.021
  4. 5
  5. 0.4
  6. 0.043
  7. 30
  8. 0.81
  9. 8.11
  10. 0.013
  11. 0.7
  12. 9.69
  13. 6.95
  14. 10.42
  15. 9.81
  16. 12.93
  17. 30
  18. 8.22
  19. 0.002
  20. 0.28
  21. 0.72
  22. 0.039
  23. 0.08
  24. 0.63
  25. 0.002
  26. 11.86
  27. 0.041
  28. 0.098
  29. 0.7
  30. 7
  31. 0.3
  32. 0.041
  33. 0.75
  34. 12.05
  35. 0.25
  36. 0.48
  37. 6.31
  38. 13.61
  39. 12.57
  40. 0.58

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