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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 819 · 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 9 in 91.678? (a) 90 (b) 9 (c) 0.09 (d) 0.9
  2. 2.What is the value of the digit 2 in 26.853? (a) 0.2 (b) 20 (c) 0.02 (d) 2
  3. 3.What is the value of the digit 8 in 25.831? (a) 8 (b) 0.08 (c) 0.008 (d) 0.8
  4. 4.Which is the greatest: 0.396, 0.074, 0.4, 0.42? (a) 0.396 (b) 0.074 (c) 0.4 (d) 0.42
  5. 5.What is the value of the digit 8 in 16.835? (a) 0.8 (b) 8 (c) 0.08 (d) 0.008
  6. 6.What is the value of the digit 2 in 25.417? (a) 20 (b) 0.2 (c) 2 (d) 0.02
  7. 7.Which is the smallest: 0.041, 0.5, 0.424, 0.57? (a) 0.041 (b) 0.5 (c) 0.424 (d) 0.57
  8. 8.4.05 + 8.7 = ? (a) 4.92 (b) 12.65 (c) 12.85 (d) 12.75
  9. 9.Which is the smallest: 0.683, 0.013, 0.74, 0.7? (a) 0.683 (b) 0.013 (c) 0.74 (d) 0.7
  10. 10.1.29 + 6.2 = ? (a) 1.91 (b) 7.49 (c) 7.59 (d) 7.39
  11. 11.Which is the smallest: 0.5, 0.451, 0.51, 0.074? (a) 0.5 (b) 0.451 (c) 0.51 (d) 0.074
  12. 12.Which is the greatest: 0.048, 0.249, 0.3, 0.39? (a) 0.048 (b) 0.249 (c) 0.3 (d) 0.39
  13. 13.1.89 + 8.3 = ? (a) 2.72 (b) 10.09 (c) 10.29 (d) 10.19
  14. 14.What is the value of the digit 1 in 13.547? (a) 0.1 (b) 1 (c) 10 (d) 0.01
  15. 15.What is the value of the digit 8 in 79.182? (a) 0.008 (b) 8 (c) 0.08 (d) 0.8
  16. 16.What is the value of the digit 4 in 48.569? (a) 0.4 (b) 0.04 (c) 40 (d) 4
  17. 17.Which is the greatest: 0.8, 0.022, 0.793, 0.88? (a) 0.8 (b) 0.022 (c) 0.793 (d) 0.88
  18. 18.9.66 + 9.9 = ? (a) 19.46 (b) 19.66 (c) 19.56 (d) 10.65
  19. 19.1.38 + 7.2 = ? (a) 8.58 (b) 8.48 (c) 2.1 (d) 8.68
  20. 20.Which is the smallest: 0.356, 0.4, 0.048, 0.42? (a) 0.356 (b) 0.4 (c) 0.048 (d) 0.42
  21. 21.8.52 + 5.3 = ? (a) 13.82 (b) 9.05 (c) 13.72 (d) 13.92
  22. 22.What is the value of the digit 7 in 57.162? (a) 70 (b) 0.7 (c) 7 (d) 0.07
  23. 23.Which is the greatest: 0.098, 0.7, 0.73, 0.695? (a) 0.098 (b) 0.7 (c) 0.73 (d) 0.695
  24. 24.Which is the greatest: 0.142, 0.23, 0.2, 0.055? (a) 0.142 (b) 0.23 (c) 0.2 (d) 0.055
  25. 25.7.51 + 9.7 = ? (a) 17.11 (b) 8.48 (c) 17.31 (d) 17.21
  26. 26.4.25 + 2.2 = ? (a) 6.55 (b) 6.45 (c) 6.35 (d) 4.47
  27. 27.Which is the greatest: 0.644, 0.7, 0.71, 0.035? (a) 0.644 (b) 0.7 (c) 0.71 (d) 0.035
  28. 28.Which is the greatest: 0.6, 0.572, 0.032, 0.66? (a) 0.6 (b) 0.572 (c) 0.032 (d) 0.66
  29. 29.1.31 + 2.2 = ? (a) 1.53 (b) 3.41 (c) 3.51 (d) 3.61
  30. 30.Which is the smallest: 0.5, 0.51, 0.483, 0.034? (a) 0.5 (b) 0.51 (c) 0.483 (d) 0.034
  31. 31.What is the value of the digit 8 in 35.148? (a) 0.08 (b) 8 (c) 0.008 (d) 0.8
  32. 32.Which is the smallest: 0.252, 0.31, 0.3, 0.087? (a) 0.252 (b) 0.31 (c) 0.3 (d) 0.087
  33. 33.Which is the smallest: 0.038, 0.551, 0.6, 0.68? (a) 0.038 (b) 0.551 (c) 0.6 (d) 0.68
  34. 34.2.53 + 1.8 = ? (a) 2.71 (b) 4.43 (c) 4.23 (d) 4.33
  35. 35.Which is the greatest: 0.036, 0.37, 0.239, 0.3? (a) 0.036 (b) 0.37 (c) 0.239 (d) 0.3
  36. 36.Which is the smallest: 0.074, 0.24, 0.124, 0.2? (a) 0.074 (b) 0.24 (c) 0.124 (d) 0.2
  37. 37.2.71 + 2.8 = ? (a) 5.51 (b) 5.61 (c) 5.41 (d) 2.99
  38. 38.7.94 + 4.3 = ? (a) 12.24 (b) 8.37 (c) 12.14 (d) 12.34
  39. 39.What is the value of the digit 4 in 82.394? (a) 0.04 (b) 0.004 (c) 0.4 (d) 4
  40. 40.What is the value of the digit 1 in 23.189? (a) 0.1 (b) 1 (c) 0.001 (d) 0.01

Answer key

  1. 90
  2. 20
  3. 0.8
  4. 0.42
  5. 0.8
  6. 20
  7. 0.041
  8. 12.75
  9. 0.013
  10. 7.49
  11. 0.074
  12. 0.39
  13. 10.19
  14. 10
  15. 0.08
  16. 40
  17. 0.88
  18. 19.56
  19. 8.58
  20. 0.048
  21. 13.82
  22. 7
  23. 0.73
  24. 0.23
  25. 17.21
  26. 6.45
  27. 0.71
  28. 0.66
  29. 3.51
  30. 0.034
  31. 0.008
  32. 0.087
  33. 0.038
  34. 4.33
  35. 0.37
  36. 0.074
  37. 5.51
  38. 12.24
  39. 0.004
  40. 0.1

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