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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 818 · 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. 1.1.49 + 5.3 = ? (a) 6.89 (b) 6.69 (c) 6.79 (d) 2.02
  2. 2.1.01 + 1.4 = ? (a) 1.15 (b) 2.51 (c) 2.31 (d) 2.41
  3. 3.8.08 + 1.7 = ? (a) 9.88 (b) 9.68 (c) 9.78 (d) 8.25
  4. 4.Which is the smallest: 0.189, 0.2, 0.29, 0.091? (a) 0.189 (b) 0.2 (c) 0.29 (d) 0.091
  5. 5.4.61 + 9.7 = ? (a) 14.21 (b) 14.41 (c) 14.31 (d) 5.58
  6. 6.1.14 + 2.4 = ? (a) 3.54 (b) 1.38 (c) 3.64 (d) 3.44
  7. 7.What is the value of the digit 7 in 25.718? (a) 0.007 (b) 0.07 (c) 0.7 (d) 7
  8. 8.Which is the smallest: 0.65, 0.6, 0.063, 0.538? (a) 0.65 (b) 0.6 (c) 0.063 (d) 0.538
  9. 9.Which is the smallest: 0.43, 0.086, 0.4, 0.323? (a) 0.43 (b) 0.086 (c) 0.4 (d) 0.323
  10. 10.5.27 + 3.2 = ? (a) 5.59 (b) 8.47 (c) 8.57 (d) 8.37
  11. 11.What is the value of the digit 2 in 51.972? (a) 0.002 (b) 2 (c) 0.02 (d) 0.2
  12. 12.What is the value of the digit 6 in 25.761? (a) 0.6 (b) 0.006 (c) 0.06 (d) 6
  13. 13.5.25 + 3.7 = ? (a) 5.62 (b) 8.95 (c) 8.85 (d) 9.05
  14. 14.Which is the greatest: 0.451, 0.061, 0.5, 0.51? (a) 0.451 (b) 0.061 (c) 0.5 (d) 0.51
  15. 15.Which is the greatest: 0.094, 0.579, 0.6, 0.63? (a) 0.094 (b) 0.579 (c) 0.6 (d) 0.63
  16. 16.3.75 + 6.6 = ? (a) 4.41 (b) 10.35 (c) 10.25 (d) 10.45
  17. 17.7.37 + 1.4 = ? (a) 7.51 (b) 8.77 (c) 8.87 (d) 8.67
  18. 18.3.11 + 3.4 = ? (a) 6.41 (b) 6.51 (c) 3.45 (d) 6.61
  19. 19.Which is the greatest: 0.351, 0.031, 0.48, 0.4? (a) 0.351 (b) 0.031 (c) 0.48 (d) 0.4
  20. 20.3.36 + 3.5 = ? (a) 6.96 (b) 6.86 (c) 3.71 (d) 6.76
  21. 21.What is the value of the digit 4 in 29.843? (a) 4 (b) 0.004 (c) 0.4 (d) 0.04
  22. 22.Which is the smallest: 0.438, 0.52, 0.091, 0.5? (a) 0.438 (b) 0.52 (c) 0.091 (d) 0.5
  23. 23.2.85 + 5.1 = ? (a) 3.36 (b) 8.05 (c) 7.85 (d) 7.95
  24. 24.Which is the greatest: 0.71, 0.7, 0.616, 0.076? (a) 0.71 (b) 0.7 (c) 0.616 (d) 0.076
  25. 25.4.09 + 2.1 = ? (a) 6.09 (b) 6.19 (c) 4.3 (d) 6.29
  26. 26.1.15 + 8.8 = ? (a) 10.05 (b) 9.95 (c) 9.85 (d) 2.03
  27. 27.3.85 + 3.2 = ? (a) 7.15 (b) 7.05 (c) 4.17 (d) 6.95
  28. 28.Which is the smallest: 0.692, 0.76, 0.012, 0.7? (a) 0.692 (b) 0.76 (c) 0.012 (d) 0.7
  29. 29.Which is the greatest: 0.5, 0.56, 0.418, 0.045? (a) 0.5 (b) 0.56 (c) 0.418 (d) 0.045
  30. 30.Which is the greatest: 0.296, 0.36, 0.096, 0.3? (a) 0.296 (b) 0.36 (c) 0.096 (d) 0.3
  31. 31.What is the value of the digit 5 in 56.314? (a) 0.5 (b) 5 (c) 0.05 (d) 50
  32. 32.What is the value of the digit 1 in 37.612? (a) 0.001 (b) 0.1 (c) 1 (d) 0.01
  33. 33.Which is the smallest: 0.393, 0.44, 0.015, 0.4? (a) 0.393 (b) 0.44 (c) 0.015 (d) 0.4
  34. 34.3.94 + 2.9 = ? (a) 6.84 (b) 4.23 (c) 6.94 (d) 6.74
  35. 35.What is the value of the digit 1 in 24.761? (a) 0.001 (b) 0.1 (c) 1 (d) 0.01
  36. 36.Which is the smallest: 0.027, 0.6, 0.63, 0.593? (a) 0.027 (b) 0.6 (c) 0.63 (d) 0.593
  37. 37.7.62 + 9.4 = ? (a) 17.12 (b) 16.92 (c) 17.02 (d) 8.56
  38. 38.What is the value of the digit 6 in 65.718? (a) 0.06 (b) 60 (c) 0.6 (d) 6
  39. 39.What is the value of the digit 2 in 42.579? (a) 0.2 (b) 0.02 (c) 2 (d) 20
  40. 40.6.66 + 6.7 = ? (a) 13.26 (b) 13.46 (c) 13.36 (d) 7.33

Answer key

  1. 6.79
  2. 2.41
  3. 9.78
  4. 0.091
  5. 14.31
  6. 3.54
  7. 0.7
  8. 0.063
  9. 0.086
  10. 8.47
  11. 0.002
  12. 0.06
  13. 8.95
  14. 0.51
  15. 0.63
  16. 10.35
  17. 8.77
  18. 6.51
  19. 0.48
  20. 6.86
  21. 0.04
  22. 0.091
  23. 7.95
  24. 0.71
  25. 6.19
  26. 9.95
  27. 7.05
  28. 0.012
  29. 0.56
  30. 0.36
  31. 50
  32. 0.01
  33. 0.015
  34. 6.84
  35. 0.001
  36. 0.027
  37. 17.02
  38. 60
  39. 2
  40. 13.36

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