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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 353 · 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. 1.2.62 + 5.1 = ? (a) 7.62 (b) 3.13 (c) 7.72 (d) 7.82
  2. 2.5.89 + 6.2 = ? (a) 11.99 (b) 12.19 (c) 6.51 (d) 12.09
  3. 3.Which is the smallest: 0.51, 0.5, 0.041, 0.425? (a) 0.51 (b) 0.5 (c) 0.041 (d) 0.425
  4. 4.2.21 + 6.4 = ? (a) 8.61 (b) 8.71 (c) 8.51 (d) 2.85
  5. 5.What is the value of the digit 8 in 89.264? (a) 0.8 (b) 0.08 (c) 80 (d) 8
  6. 6.2.03 + 5.1 = ? (a) 7.03 (b) 7.23 (c) 7.13 (d) 2.54
  7. 7.What is the value of the digit 6 in 82.619? (a) 6 (b) 0.006 (c) 0.06 (d) 0.6
  8. 8.What is the value of the digit 4 in 42.597? (a) 4 (b) 40 (c) 0.04 (d) 0.4
  9. 9.9.52 + 7.1 = ? (a) 16.72 (b) 16.52 (c) 16.62 (d) 10.23
  10. 10.1.61 + 4.9 = ? (a) 2.1 (b) 6.51 (c) 6.61 (d) 6.41
  11. 11.What is the value of the digit 9 in 93.584? (a) 9 (b) 0.09 (c) 0.9 (d) 90
  12. 12.1.63 + 4.7 = ? (a) 6.43 (b) 2.1 (c) 6.33 (d) 6.23
  13. 13.9.65 + 2.1 = ? (a) 9.86 (b) 11.85 (c) 11.65 (d) 11.75
  14. 14.What is the value of the digit 5 in 84.175? (a) 5 (b) 0.05 (c) 0.5 (d) 0.005
  15. 15.5.43 + 8.8 = ? (a) 14.33 (b) 14.13 (c) 14.23 (d) 6.31
  16. 16.What is the value of the digit 8 in 98.253? (a) 0.8 (b) 80 (c) 0.08 (d) 8
  17. 17.What is the value of the digit 7 in 72.596? (a) 7 (b) 0.7 (c) 70 (d) 0.07
  18. 18.Which is the smallest: 0.034, 0.211, 0.3, 0.32? (a) 0.034 (b) 0.211 (c) 0.3 (d) 0.32
  19. 19.Which is the smallest: 0.632, 0.7, 0.021, 0.77? (a) 0.632 (b) 0.7 (c) 0.021 (d) 0.77
  20. 20.7.46 + 4.7 = ? (a) 7.93 (b) 12.06 (c) 12.26 (d) 12.16
  21. 21.7.47 + 5.3 = ? (a) 8 (b) 12.87 (c) 12.67 (d) 12.77
  22. 22.1.49 + 2.6 = ? (a) 4.19 (b) 3.99 (c) 4.09 (d) 1.75
  23. 23.What is the value of the digit 6 in 83.264? (a) 6 (b) 0.06 (c) 0.006 (d) 0.6
  24. 24.What is the value of the digit 5 in 45.827? (a) 0.5 (b) 5 (c) 50 (d) 0.05
  25. 25.What is the value of the digit 3 in 19.732? (a) 0.003 (b) 3 (c) 0.03 (d) 0.3
  26. 26.What is the value of the digit 6 in 64.317? (a) 0.6 (b) 60 (c) 6 (d) 0.06
  27. 27.9.21 + 1.5 = ? (a) 10.61 (b) 9.36 (c) 10.81 (d) 10.71
  28. 28.Which is the smallest: 0.251, 0.31, 0.047, 0.3? (a) 0.251 (b) 0.31 (c) 0.047 (d) 0.3
  29. 29.2.85 + 9.7 = ? (a) 12.55 (b) 12.45 (c) 3.82 (d) 12.65
  30. 30.4.98 + 1.9 = ? (a) 5.17 (b) 6.88 (c) 6.98 (d) 6.78
  31. 31.6.96 + 9.1 = ? (a) 16.16 (b) 7.87 (c) 15.96 (d) 16.06
  32. 32.4.51 + 6.4 = ? (a) 5.15 (b) 11.01 (c) 10.91 (d) 10.81
  33. 33.What is the value of the digit 5 in 42.597? (a) 0.05 (b) 0.005 (c) 0.5 (d) 5
  34. 34.What is the value of the digit 3 in 74.931? (a) 0.3 (b) 0.003 (c) 3 (d) 0.03
  35. 35.5.35 + 3.1 = ? (a) 5.66 (b) 8.55 (c) 8.45 (d) 8.35
  36. 36.What is the value of the digit 6 in 36.897? (a) 0.6 (b) 6 (c) 60 (d) 0.06
  37. 37.What is the value of the digit 9 in 69.134? (a) 90 (b) 0.9 (c) 9 (d) 0.09
  38. 38.2.36 + 6.1 = ? (a) 8.36 (b) 8.56 (c) 8.46 (d) 2.97
  39. 39.Which is the smallest: 0.399, 0.44, 0.4, 0.036? (a) 0.399 (b) 0.44 (c) 0.4 (d) 0.036
  40. 40.7.45 + 7.5 = ? (a) 8.2 (b) 15.05 (c) 14.85 (d) 14.95

Answer key

  1. 7.72
  2. 12.09
  3. 0.041
  4. 8.61
  5. 80
  6. 7.13
  7. 0.6
  8. 40
  9. 16.62
  10. 6.51
  11. 90
  12. 6.33
  13. 11.75
  14. 0.005
  15. 14.23
  16. 8
  17. 70
  18. 0.034
  19. 0.021
  20. 12.16
  21. 12.77
  22. 4.09
  23. 0.06
  24. 5
  25. 0.03
  26. 60
  27. 10.71
  28. 0.047
  29. 12.55
  30. 6.88
  31. 16.06
  32. 10.91
  33. 0.5
  34. 0.03
  35. 8.45
  36. 6
  37. 9
  38. 8.46
  39. 0.036
  40. 14.95

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