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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 202 · 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. 1.8.35 + 2.7 = ? (a) 11.15 (b) 8.62 (c) 11.05 (d) 10.95
  2. 2.7.94 + 2.3 = ? (a) 10.24 (b) 10.34 (c) 8.17 (d) 10.14
  3. 3.9.66 + 6.7 = ? (a) 16.46 (b) 16.36 (c) 16.26 (d) 10.33
  4. 4.Which is the greatest: 0.215, 0.3, 0.32, 0.086? (a) 0.215 (b) 0.3 (c) 0.32 (d) 0.086
  5. 5.Which is the greatest: 0.029, 0.4, 0.392, 0.44? (a) 0.029 (b) 0.4 (c) 0.392 (d) 0.44
  6. 6.What is the value of the digit 5 in 23.785? (a) 0.5 (b) 0.005 (c) 0.05 (d) 5
  7. 7.Which is the greatest: 0.322, 0.054, 0.49, 0.4? (a) 0.322 (b) 0.054 (c) 0.49 (d) 0.4
  8. 8.1.23 + 8.6 = ? (a) 9.73 (b) 9.93 (c) 9.83 (d) 2.09
  9. 9.9.15 + 3.7 = ? (a) 12.75 (b) 12.95 (c) 12.85 (d) 9.52
  10. 10.What is the value of the digit 2 in 43.672? (a) 0.002 (b) 2 (c) 0.2 (d) 0.02
  11. 11.1.52 + 6.1 = ? (a) 7.62 (b) 2.13 (c) 7.52 (d) 7.72
  12. 12.Which is the greatest: 0.8, 0.022, 0.716, 0.82? (a) 0.8 (b) 0.022 (c) 0.716 (d) 0.82
  13. 13.Which is the greatest: 0.3, 0.34, 0.256, 0.012? (a) 0.3 (b) 0.34 (c) 0.256 (d) 0.012
  14. 14.1.44 + 3.1 = ? (a) 4.54 (b) 4.44 (c) 1.75 (d) 4.64
  15. 15.What is the value of the digit 9 in 51.839? (a) 0.009 (b) 0.09 (c) 9 (d) 0.9
  16. 16.4.94 + 1.7 = ? (a) 5.11 (b) 6.64 (c) 6.54 (d) 6.74
  17. 17.Which is the greatest: 0.026, 0.4, 0.48, 0.381? (a) 0.026 (b) 0.4 (c) 0.48 (d) 0.381
  18. 18.What is the value of the digit 6 in 16.329? (a) 6 (b) 60 (c) 0.06 (d) 0.6
  19. 19.Which is the greatest: 0.213, 0.3, 0.038, 0.39? (a) 0.213 (b) 0.3 (c) 0.038 (d) 0.39
  20. 20.Which is the smallest: 0.72, 0.625, 0.7, 0.012? (a) 0.72 (b) 0.625 (c) 0.7 (d) 0.012
  21. 21.Which is the smallest: 0.45, 0.012, 0.4, 0.336? (a) 0.45 (b) 0.012 (c) 0.4 (d) 0.336
  22. 22.9.59 + 1.8 = ? (a) 11.49 (b) 11.39 (c) 11.29 (d) 9.77
  23. 23.Which is the smallest: 0.292, 0.36, 0.044, 0.3? (a) 0.292 (b) 0.36 (c) 0.044 (d) 0.3
  24. 24.What is the value of the digit 3 in 13.467? (a) 3 (b) 0.3 (c) 30 (d) 0.03
  25. 25.What is the value of the digit 2 in 82.641? (a) 0.2 (b) 0.02 (c) 20 (d) 2
  26. 26.What is the value of the digit 6 in 23.618? (a) 6 (b) 0.06 (c) 0.006 (d) 0.6
  27. 27.What is the value of the digit 5 in 13.957? (a) 0.5 (b) 0.05 (c) 5 (d) 0.005
  28. 28.4.15 + 9.1 = ? (a) 13.25 (b) 13.15 (c) 5.06 (d) 13.35
  29. 29.What is the value of the digit 8 in 39.681? (a) 0.8 (b) 0.08 (c) 0.008 (d) 8
  30. 30.Which is the smallest: 0.019, 0.156, 0.23, 0.2? (a) 0.019 (b) 0.156 (c) 0.23 (d) 0.2
  31. 31.5.39 + 2.9 = ? (a) 5.68 (b) 8.19 (c) 8.39 (d) 8.29
  32. 32.9.17 + 5.2 = ? (a) 9.69 (b) 14.37 (c) 14.47 (d) 14.27
  33. 33.7.69 + 1.6 = ? (a) 9.29 (b) 9.19 (c) 9.39 (d) 7.85
  34. 34.6.91 + 1.1 = ? (a) 8.11 (b) 7.91 (c) 7.02 (d) 8.01
  35. 35.8.19 + 3.1 = ? (a) 8.5 (b) 11.39 (c) 11.29 (d) 11.19
  36. 36.What is the value of the digit 4 in 53.649? (a) 0.4 (b) 4 (c) 0.04 (d) 0.004
  37. 37.What is the value of the digit 7 in 74.835? (a) 0.07 (b) 7 (c) 0.7 (d) 70
  38. 38.7.58 + 6.4 = ? (a) 8.22 (b) 13.88 (c) 14.08 (d) 13.98
  39. 39.Which is the smallest: 0.072, 0.84, 0.8, 0.721? (a) 0.072 (b) 0.84 (c) 0.8 (d) 0.721
  40. 40.3.52 + 5.3 = ? (a) 8.72 (b) 4.05 (c) 8.82 (d) 8.92

Answer key

  1. 11.05
  2. 10.24
  3. 16.36
  4. 0.32
  5. 0.44
  6. 0.005
  7. 0.49
  8. 9.83
  9. 12.85
  10. 0.002
  11. 7.62
  12. 0.82
  13. 0.34
  14. 4.54
  15. 0.009
  16. 6.64
  17. 0.48
  18. 6
  19. 0.39
  20. 0.012
  21. 0.012
  22. 11.39
  23. 0.044
  24. 3
  25. 2
  26. 0.6
  27. 0.05
  28. 13.25
  29. 0.08
  30. 0.019
  31. 8.29
  32. 14.37
  33. 9.29
  34. 8.01
  35. 11.29
  36. 0.04
  37. 70
  38. 13.98
  39. 0.072
  40. 8.82

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