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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 573 · 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 1 in 19.486? (a) 0.01 (b) 10 (c) 1 (d) 0.1
  2. 2.3.73 + 9.6 = ? (a) 13.33 (b) 13.23 (c) 13.43 (d) 4.69
  3. 3.7.58 + 6.2 = ? (a) 13.68 (b) 13.78 (c) 13.88 (d) 8.2
  4. 4.7.84 + 5.7 = ? (a) 8.41 (b) 13.54 (c) 13.44 (d) 13.64
  5. 5.Which is the smallest: 0.39, 0.012, 0.256, 0.3? (a) 0.39 (b) 0.012 (c) 0.256 (d) 0.3
  6. 6.6.21 + 9.8 = ? (a) 7.19 (b) 16.01 (c) 15.91 (d) 16.11
  7. 7.8.05 + 4.5 = ? (a) 12.65 (b) 8.5 (c) 12.45 (d) 12.55
  8. 8.4.69 + 7.6 = ? (a) 12.39 (b) 12.29 (c) 5.45 (d) 12.19
  9. 9.6.95 + 3.1 = ? (a) 9.95 (b) 10.05 (c) 7.26 (d) 10.15
  10. 10.Which is the smallest: 0.21, 0.2, 0.132, 0.088? (a) 0.21 (b) 0.2 (c) 0.132 (d) 0.088
  11. 11.What is the value of the digit 1 in 72.146? (a) 0.01 (b) 0.001 (c) 0.1 (d) 1
  12. 12.What is the value of the digit 6 in 71.653? (a) 0.006 (b) 6 (c) 0.06 (d) 0.6
  13. 13.What is the value of the digit 1 in 32.184? (a) 0.01 (b) 1 (c) 0.001 (d) 0.1
  14. 14.Which is the greatest: 0.324, 0.42, 0.057, 0.4? (a) 0.324 (b) 0.42 (c) 0.057 (d) 0.4
  15. 15.What is the value of the digit 3 in 86.732? (a) 0.003 (b) 0.03 (c) 0.3 (d) 3
  16. 16.Which is the greatest: 0.24, 0.159, 0.2, 0.082? (a) 0.24 (b) 0.159 (c) 0.2 (d) 0.082
  17. 17.4.31 + 8.1 = ? (a) 12.31 (b) 12.51 (c) 12.41 (d) 5.12
  18. 18.What is the value of the digit 1 in 76.391? (a) 0.001 (b) 0.01 (c) 1 (d) 0.1
  19. 19.4.87 + 7.1 = ? (a) 11.87 (b) 5.58 (c) 11.97 (d) 12.07
  20. 20.Which is the smallest: 0.055, 0.2, 0.24, 0.131? (a) 0.055 (b) 0.2 (c) 0.24 (d) 0.131
  21. 21.1.75 + 5.4 = ? (a) 7.15 (b) 7.25 (c) 7.05 (d) 2.29
  22. 22.1.05 + 1.9 = ? (a) 1.24 (b) 3.05 (c) 2.95 (d) 2.85
  23. 23.2.11 + 7.7 = ? (a) 9.91 (b) 2.88 (c) 9.71 (d) 9.81
  24. 24.What is the value of the digit 1 in 85.914? (a) 1 (b) 0.1 (c) 0.01 (d) 0.001
  25. 25.Which is the greatest: 0.42, 0.055, 0.4, 0.395? (a) 0.42 (b) 0.055 (c) 0.4 (d) 0.395
  26. 26.Which is the greatest: 0.075, 0.79, 0.629, 0.7? (a) 0.075 (b) 0.79 (c) 0.629 (d) 0.7
  27. 27.What is the value of the digit 2 in 52.948? (a) 20 (b) 0.2 (c) 2 (d) 0.02
  28. 28.What is the value of the digit 4 in 94.853? (a) 0.04 (b) 4 (c) 0.4 (d) 40
  29. 29.1.11 + 7.7 = ? (a) 8.71 (b) 1.88 (c) 8.81 (d) 8.91
  30. 30.What is the value of the digit 3 in 36.187? (a) 0.3 (b) 0.03 (c) 3 (d) 30
  31. 31.9.72 + 7.4 = ? (a) 17.12 (b) 10.46 (c) 17.22 (d) 17.02
  32. 32.Which is the greatest: 0.3, 0.39, 0.042, 0.257? (a) 0.3 (b) 0.39 (c) 0.042 (d) 0.257
  33. 33.Which is the greatest: 0.022, 0.54, 0.449, 0.5? (a) 0.022 (b) 0.54 (c) 0.449 (d) 0.5
  34. 34.What is the value of the digit 4 in 52.469? (a) 0.04 (b) 4 (c) 0.004 (d) 0.4
  35. 35.Which is the greatest: 0.3, 0.092, 0.37, 0.229? (a) 0.3 (b) 0.092 (c) 0.37 (d) 0.229
  36. 36.What is the value of the digit 4 in 13.548? (a) 4 (b) 0.04 (c) 0.4 (d) 0.004
  37. 37.1.84 + 9.3 = ? (a) 11.14 (b) 11.24 (c) 11.04 (d) 2.77
  38. 38.What is the value of the digit 5 in 68.253? (a) 5 (b) 0.5 (c) 0.05 (d) 0.005
  39. 39.1.06 + 5.4 = ? (a) 1.6 (b) 6.56 (c) 6.36 (d) 6.46
  40. 40.Which is the greatest: 0.018, 0.3, 0.33, 0.236? (a) 0.018 (b) 0.3 (c) 0.33 (d) 0.236

Answer key

  1. 10
  2. 13.33
  3. 13.78
  4. 13.54
  5. 0.012
  6. 16.01
  7. 12.55
  8. 12.29
  9. 10.05
  10. 0.088
  11. 0.1
  12. 0.6
  13. 0.1
  14. 0.42
  15. 0.03
  16. 0.24
  17. 12.41
  18. 0.001
  19. 11.97
  20. 0.055
  21. 7.15
  22. 2.95
  23. 9.81
  24. 0.01
  25. 0.42
  26. 0.79
  27. 2
  28. 4
  29. 8.81
  30. 30
  31. 17.12
  32. 0.39
  33. 0.54
  34. 0.4
  35. 0.37
  36. 0.04
  37. 11.14
  38. 0.05
  39. 6.46
  40. 0.33

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