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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 130 · 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: 0.154, 0.077, 0.23, 0.2? (a) 0.154 (b) 0.077 (c) 0.23 (d) 0.2
  2. 2.Which is the greatest: 0.029, 0.319, 0.43, 0.4? (a) 0.029 (b) 0.319 (c) 0.43 (d) 0.4
  3. 3.2.52 + 5.1 = ? (a) 7.72 (b) 7.52 (c) 7.62 (d) 3.03
  4. 4.7.32 + 5.4 = ? (a) 12.62 (b) 12.72 (c) 12.82 (d) 7.86
  5. 5.What is the value of the digit 8 in 98.275? (a) 80 (b) 0.08 (c) 8 (d) 0.8
  6. 6.Which is the greatest: 0.59, 0.042, 0.423, 0.5? (a) 0.59 (b) 0.042 (c) 0.423 (d) 0.5
  7. 7.2.14 + 1.5 = ? (a) 3.74 (b) 2.29 (c) 3.54 (d) 3.64
  8. 8.9.34 + 3.3 = ? (a) 9.67 (b) 12.64 (c) 12.54 (d) 12.74
  9. 9.5.64 + 2.9 = ? (a) 8.54 (b) 5.93 (c) 8.44 (d) 8.64
  10. 10.What is the value of the digit 2 in 18.237? (a) 0.2 (b) 0.002 (c) 2 (d) 0.02
  11. 11.What is the value of the digit 9 in 27.936? (a) 9 (b) 0.9 (c) 0.09 (d) 0.009
  12. 12.Which is the greatest: 0.157, 0.019, 0.22, 0.2? (a) 0.157 (b) 0.019 (c) 0.22 (d) 0.2
  13. 13.Which is the greatest: 0.648, 0.72, 0.7, 0.057? (a) 0.648 (b) 0.72 (c) 0.7 (d) 0.057
  14. 14.Which is the smallest: 0.014, 0.3, 0.38, 0.289? (a) 0.014 (b) 0.3 (c) 0.38 (d) 0.289
  15. 15.Which is the greatest: 0.27, 0.2, 0.017, 0.191? (a) 0.27 (b) 0.2 (c) 0.017 (d) 0.191
  16. 16.What is the value of the digit 6 in 36.417? (a) 0.06 (b) 60 (c) 0.6 (d) 6
  17. 17.4.72 + 2.4 = ? (a) 7.22 (b) 7.12 (c) 7.02 (d) 4.96
  18. 18.8.92 + 1.1 = ? (a) 10.02 (b) 9.92 (c) 9.03 (d) 10.12
  19. 19.7.47 + 1.6 = ? (a) 9.07 (b) 8.97 (c) 9.17 (d) 7.63
  20. 20.What is the value of the digit 9 in 43.759? (a) 0.9 (b) 0.09 (c) 0.009 (d) 9
  21. 21.Which is the greatest: 0.5, 0.494, 0.052, 0.52? (a) 0.5 (b) 0.494 (c) 0.052 (d) 0.52
  22. 22.What is the value of the digit 2 in 28.149? (a) 0.02 (b) 20 (c) 0.2 (d) 2
  23. 23.What is the value of the digit 3 in 73.915? (a) 30 (b) 0.03 (c) 0.3 (d) 3
  24. 24.7.71 + 3.7 = ? (a) 11.51 (b) 11.31 (c) 11.41 (d) 8.08
  25. 25.6.52 + 8.1 = ? (a) 14.52 (b) 7.33 (c) 14.62 (d) 14.72
  26. 26.What is the value of the digit 5 in 83.651? (a) 5 (b) 0.5 (c) 0.05 (d) 0.005
  27. 27.Which is the greatest: 0.785, 0.86, 0.8, 0.081? (a) 0.785 (b) 0.86 (c) 0.8 (d) 0.081
  28. 28.Which is the smallest: 0.66, 0.6, 0.591, 0.031? (a) 0.66 (b) 0.6 (c) 0.591 (d) 0.031
  29. 29.8.51 + 9.8 = ? (a) 18.41 (b) 9.49 (c) 18.31 (d) 18.21
  30. 30.Which is the smallest: 0.076, 0.229, 0.38, 0.3? (a) 0.076 (b) 0.229 (c) 0.38 (d) 0.3
  31. 31.5.73 + 1.1 = ? (a) 6.93 (b) 6.83 (c) 6.73 (d) 5.84
  32. 32.What is the value of the digit 8 in 26.487? (a) 0.8 (b) 0.08 (c) 0.008 (d) 8
  33. 33.3.14 + 7.9 = ? (a) 3.93 (b) 10.94 (c) 11.14 (d) 11.04
  34. 34.Which is the greatest: 0.8, 0.069, 0.774, 0.82? (a) 0.8 (b) 0.069 (c) 0.774 (d) 0.82
  35. 35.Which is the greatest: 0.061, 0.49, 0.395, 0.4? (a) 0.061 (b) 0.49 (c) 0.395 (d) 0.4
  36. 36.Which is the greatest: 0.527, 0.6, 0.67, 0.078? (a) 0.527 (b) 0.6 (c) 0.67 (d) 0.078
  37. 37.What is the value of the digit 9 in 38.916? (a) 9 (b) 0.09 (c) 0.009 (d) 0.9
  38. 38.Which is the smallest: 0.7, 0.72, 0.652, 0.054? (a) 0.7 (b) 0.72 (c) 0.652 (d) 0.054
  39. 39.Which is the greatest: 0.027, 0.7, 0.75, 0.675? (a) 0.027 (b) 0.7 (c) 0.75 (d) 0.675
  40. 40.What is the value of the digit 2 in 26.984? (a) 2 (b) 0.02 (c) 0.2 (d) 20

Answer key

  1. 0.23
  2. 0.43
  3. 7.62
  4. 12.72
  5. 8
  6. 0.59
  7. 3.64
  8. 12.64
  9. 8.54
  10. 0.2
  11. 0.9
  12. 0.22
  13. 0.72
  14. 0.014
  15. 0.27
  16. 6
  17. 7.12
  18. 10.02
  19. 9.07
  20. 0.009
  21. 0.52
  22. 20
  23. 3
  24. 11.41
  25. 14.62
  26. 0.05
  27. 0.86
  28. 0.031
  29. 18.31
  30. 0.076
  31. 6.83
  32. 0.08
  33. 11.04
  34. 0.82
  35. 0.49
  36. 0.67
  37. 0.9
  38. 0.054
  39. 0.75
  40. 20

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