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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 194 · 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. 1.1.63 + 2.1 = ? (a) 1.84 (b) 3.73 (c) 3.83 (d) 3.63
  2. 2.Which is the greatest: 0.042, 0.319, 0.49, 0.4? (a) 0.042 (b) 0.319 (c) 0.49 (d) 0.4
  3. 3.Which is the smallest: 0.3, 0.38, 0.068, 0.241? (a) 0.3 (b) 0.38 (c) 0.068 (d) 0.241
  4. 4.Which is the smallest: 0.032, 0.224, 0.3, 0.38? (a) 0.032 (b) 0.224 (c) 0.3 (d) 0.38
  5. 5.What is the value of the digit 5 in 43.851? (a) 0.005 (b) 5 (c) 0.05 (d) 0.5
  6. 6.What is the value of the digit 4 in 16.843? (a) 0.4 (b) 0.004 (c) 0.04 (d) 4
  7. 7.5.56 + 3.2 = ? (a) 8.66 (b) 8.86 (c) 5.88 (d) 8.76
  8. 8.7.71 + 2.4 = ? (a) 7.95 (b) 10.11 (c) 10.01 (d) 10.21
  9. 9.Which is the smallest: 0.428, 0.078, 0.58, 0.5? (a) 0.428 (b) 0.078 (c) 0.58 (d) 0.5
  10. 10.1.18 + 3.1 = ? (a) 1.49 (b) 4.38 (c) 4.28 (d) 4.18
  11. 11.1.41 + 5.8 = ? (a) 7.21 (b) 7.11 (c) 7.31 (d) 1.99
  12. 12.Which is the smallest: 0.044, 0.21, 0.116, 0.2? (a) 0.044 (b) 0.21 (c) 0.116 (d) 0.2
  13. 13.1.53 + 6.9 = ? (a) 2.22 (b) 8.53 (c) 8.43 (d) 8.33
  14. 14.Which is the greatest: 0.314, 0.4, 0.082, 0.43? (a) 0.314 (b) 0.4 (c) 0.082 (d) 0.43
  15. 15.Which is the smallest: 0.063, 0.159, 0.26, 0.2? (a) 0.063 (b) 0.159 (c) 0.26 (d) 0.2
  16. 16.6.28 + 6.8 = ? (a) 6.96 (b) 13.18 (c) 13.08 (d) 12.98
  17. 17.What is the value of the digit 9 in 49.125? (a) 0.09 (b) 90 (c) 0.9 (d) 9
  18. 18.What is the value of the digit 5 in 78.465? (a) 5 (b) 0.05 (c) 0.5 (d) 0.005
  19. 19.What is the value of the digit 1 in 39.781? (a) 0.1 (b) 0.001 (c) 0.01 (d) 1
  20. 20.What is the value of the digit 8 in 73.148? (a) 0.08 (b) 0.8 (c) 8 (d) 0.008
  21. 21.3.21 + 1.9 = ? (a) 5.21 (b) 5.11 (c) 3.4 (d) 5.01
  22. 22.4.13 + 8.1 = ? (a) 12.13 (b) 4.94 (c) 12.23 (d) 12.33
  23. 23.3.45 + 4.4 = ? (a) 7.85 (b) 7.75 (c) 7.95 (d) 3.89
  24. 24.9.03 + 8.6 = ? (a) 17.53 (b) 9.89 (c) 17.73 (d) 17.63
  25. 25.2.89 + 4.9 = ? (a) 7.79 (b) 7.69 (c) 7.89 (d) 3.38
  26. 26.6.78 + 5.7 = ? (a) 12.38 (b) 12.48 (c) 12.58 (d) 7.35
  27. 27.4.57 + 4.1 = ? (a) 8.67 (b) 8.77 (c) 8.57 (d) 4.98
  28. 28.What is the value of the digit 9 in 94.618? (a) 0.09 (b) 90 (c) 9 (d) 0.9
  29. 29.What is the value of the digit 3 in 39.247? (a) 0.03 (b) 3 (c) 0.3 (d) 30
  30. 30.3.09 + 6.4 = ? (a) 9.39 (b) 3.73 (c) 9.49 (d) 9.59
  31. 31.What is the value of the digit 6 in 65.347? (a) 0.06 (b) 6 (c) 0.6 (d) 60
  32. 32.Which is the greatest: 0.039, 0.734, 0.8, 0.83? (a) 0.039 (b) 0.734 (c) 0.8 (d) 0.83
  33. 33.Which is the smallest: 0.691, 0.017, 0.75, 0.7? (a) 0.691 (b) 0.017 (c) 0.75 (d) 0.7
  34. 34.4.59 + 4.2 = ? (a) 8.69 (b) 8.89 (c) 8.79 (d) 5.01
  35. 35.What is the value of the digit 8 in 87.219? (a) 0.8 (b) 0.08 (c) 80 (d) 8
  36. 36.7.32 + 3.9 = ? (a) 11.12 (b) 11.32 (c) 7.71 (d) 11.22
  37. 37.What is the value of the digit 5 in 98.653? (a) 0.05 (b) 0.5 (c) 5 (d) 0.005
  38. 38.Which is the greatest: 0.699, 0.76, 0.096, 0.7? (a) 0.699 (b) 0.76 (c) 0.096 (d) 0.7
  39. 39.Which is the greatest: 0.6, 0.012, 0.63, 0.544? (a) 0.6 (b) 0.012 (c) 0.63 (d) 0.544
  40. 40.Which is the smallest: 0.8, 0.81, 0.793, 0.078? (a) 0.8 (b) 0.81 (c) 0.793 (d) 0.078

Answer key

  1. 3.73
  2. 0.49
  3. 0.068
  4. 0.032
  5. 0.05
  6. 0.04
  7. 8.76
  8. 10.11
  9. 0.078
  10. 4.28
  11. 7.21
  12. 0.044
  13. 8.43
  14. 0.43
  15. 0.063
  16. 13.08
  17. 9
  18. 0.005
  19. 0.001
  20. 0.008
  21. 5.11
  22. 12.23
  23. 7.85
  24. 17.63
  25. 7.79
  26. 12.48
  27. 8.67
  28. 90
  29. 30
  30. 9.49
  31. 60
  32. 0.83
  33. 0.017
  34. 8.79
  35. 80
  36. 11.22
  37. 0.05
  38. 0.76
  39. 0.63
  40. 0.078

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