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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 770 · 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.Which is the greatest: 0.064, 0.82, 0.723, 0.8? (a) 0.064 (b) 0.82 (c) 0.723 (d) 0.8
  2. 2.Which is the greatest: 0.6, 0.565, 0.077, 0.65? (a) 0.6 (b) 0.565 (c) 0.077 (d) 0.65
  3. 3.Which is the smallest: 0.421, 0.5, 0.51, 0.084? (a) 0.421 (b) 0.5 (c) 0.51 (d) 0.084
  4. 4.What is the value of the digit 5 in 35.219? (a) 0.5 (b) 5 (c) 50 (d) 0.05
  5. 5.Which is the greatest: 0.34, 0.3, 0.011, 0.264? (a) 0.34 (b) 0.3 (c) 0.011 (d) 0.264
  6. 6.7.62 + 7.1 = ? (a) 14.62 (b) 14.82 (c) 14.72 (d) 8.33
  7. 7.Which is the greatest: 0.3, 0.023, 0.39, 0.263? (a) 0.3 (b) 0.023 (c) 0.39 (d) 0.263
  8. 8.8.81 + 2.1 = ? (a) 10.81 (b) 10.91 (c) 9.02 (d) 11.01
  9. 9.Which is the greatest: 0.019, 0.256, 0.31, 0.3? (a) 0.019 (b) 0.256 (c) 0.31 (d) 0.3
  10. 10.What is the value of the digit 9 in 56.289? (a) 0.009 (b) 9 (c) 0.09 (d) 0.9
  11. 11.9.84 + 8.2 = ? (a) 18.14 (b) 18.04 (c) 10.66 (d) 17.94
  12. 12.What is the value of the digit 1 in 81.734? (a) 10 (b) 1 (c) 0.01 (d) 0.1
  13. 13.Which is the smallest: 0.092, 0.237, 0.3, 0.34? (a) 0.092 (b) 0.237 (c) 0.3 (d) 0.34
  14. 14.What is the value of the digit 3 in 81.634? (a) 0.03 (b) 0.3 (c) 3 (d) 0.003
  15. 15.9.99 + 4.7 = ? (a) 14.69 (b) 14.79 (c) 10.46 (d) 14.59
  16. 16.Which is the greatest: 0.124, 0.2, 0.013, 0.25? (a) 0.124 (b) 0.2 (c) 0.013 (d) 0.25
  17. 17.5.98 + 3.9 = ? (a) 6.37 (b) 9.98 (c) 9.88 (d) 9.78
  18. 18.Which is the smallest: 0.567, 0.6, 0.032, 0.64? (a) 0.567 (b) 0.6 (c) 0.032 (d) 0.64
  19. 19.Which is the smallest: 0.8, 0.86, 0.757, 0.044? (a) 0.8 (b) 0.86 (c) 0.757 (d) 0.044
  20. 20.7.63 + 8.6 = ? (a) 16.33 (b) 16.23 (c) 8.49 (d) 16.13
  21. 21.What is the value of the digit 8 in 61.824? (a) 8 (b) 0.08 (c) 0.8 (d) 0.008
  22. 22.What is the value of the digit 1 in 54.168? (a) 0.01 (b) 0.1 (c) 1 (d) 0.001
  23. 23.Which is the greatest: 0.2, 0.064, 0.124, 0.21? (a) 0.2 (b) 0.064 (c) 0.124 (d) 0.21
  24. 24.2.96 + 6.2 = ? (a) 9.06 (b) 9.26 (c) 9.16 (d) 3.58
  25. 25.2.88 + 6.2 = ? (a) 9.08 (b) 3.5 (c) 8.98 (d) 9.18
  26. 26.1.51 + 8.8 = ? (a) 10.21 (b) 10.41 (c) 10.31 (d) 2.39
  27. 27.1.14 + 2.1 = ? (a) 1.35 (b) 3.34 (c) 3.14 (d) 3.24
  28. 28.Which is the smallest: 0.137, 0.041, 0.21, 0.2? (a) 0.137 (b) 0.041 (c) 0.21 (d) 0.2
  29. 29.3.23 + 4.4 = ? (a) 3.67 (b) 7.73 (c) 7.63 (d) 7.53
  30. 30.What is the value of the digit 2 in 42.613? (a) 0.02 (b) 20 (c) 2 (d) 0.2
  31. 31.What is the value of the digit 4 in 14.573? (a) 0.04 (b) 4 (c) 40 (d) 0.4
  32. 32.4.33 + 4.1 = ? (a) 4.74 (b) 8.53 (c) 8.43 (d) 8.33
  33. 33.5.78 + 8.9 = ? (a) 14.78 (b) 14.68 (c) 14.58 (d) 6.67
  34. 34.Which is the greatest: 0.093, 0.354, 0.4, 0.43? (a) 0.093 (b) 0.354 (c) 0.4 (d) 0.43
  35. 35.Which is the greatest: 0.084, 0.8, 0.88, 0.776? (a) 0.084 (b) 0.8 (c) 0.88 (d) 0.776
  36. 36.Which is the greatest: 0.615, 0.7, 0.029, 0.79? (a) 0.615 (b) 0.7 (c) 0.029 (d) 0.79
  37. 37.1.66 + 2.8 = ? (a) 1.94 (b) 4.56 (c) 4.36 (d) 4.46
  38. 38.6.84 + 5.9 = ? (a) 12.74 (b) 12.64 (c) 12.84 (d) 7.43
  39. 39.What is the value of the digit 2 in 53.472? (a) 0.002 (b) 0.2 (c) 2 (d) 0.02
  40. 40.What is the value of the digit 7 in 84.725? (a) 0.007 (b) 7 (c) 0.07 (d) 0.7

Answer key

  1. 0.82
  2. 0.65
  3. 0.084
  4. 5
  5. 0.34
  6. 14.72
  7. 0.39
  8. 10.91
  9. 0.31
  10. 0.009
  11. 18.04
  12. 1
  13. 0.092
  14. 0.03
  15. 14.69
  16. 0.25
  17. 9.88
  18. 0.032
  19. 0.044
  20. 16.23
  21. 0.8
  22. 0.1
  23. 0.21
  24. 9.16
  25. 9.08
  26. 10.31
  27. 3.24
  28. 0.041
  29. 7.63
  30. 2
  31. 4
  32. 8.43
  33. 14.68
  34. 0.43
  35. 0.88
  36. 0.79
  37. 4.46
  38. 12.74
  39. 0.002
  40. 0.7

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