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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 428 · 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: 0.36, 0.089, 0.235, 0.3? (a) 0.36 (b) 0.089 (c) 0.235 (d) 0.3
  2. 2.3.39 + 3.2 = ? (a) 3.71 (b) 6.59 (c) 6.69 (d) 6.49
  3. 3.5.88 + 5.9 = ? (a) 6.47 (b) 11.88 (c) 11.68 (d) 11.78
  4. 4.Which is the smallest: 0.64, 0.6, 0.517, 0.054? (a) 0.64 (b) 0.6 (c) 0.517 (d) 0.054
  5. 5.8.09 + 3.8 = ? (a) 11.79 (b) 11.89 (c) 8.47 (d) 11.99
  6. 6.9.94 + 1.2 = ? (a) 11.04 (b) 11.24 (c) 11.14 (d) 10.06
  7. 7.What is the value of the digit 3 in 19.863? (a) 0.03 (b) 0.3 (c) 3 (d) 0.003
  8. 8.Which is the smallest: 0.034, 0.5, 0.429, 0.51? (a) 0.034 (b) 0.5 (c) 0.429 (d) 0.51
  9. 9.Which is the greatest: 0.047, 0.36, 0.233, 0.3? (a) 0.047 (b) 0.36 (c) 0.233 (d) 0.3
  10. 10.2.78 + 2.1 = ? (a) 4.78 (b) 4.98 (c) 4.88 (d) 2.99
  11. 11.What is the value of the digit 8 in 73.281? (a) 0.08 (b) 0.008 (c) 0.8 (d) 8
  12. 12.3.03 + 1.7 = ? (a) 3.2 (b) 4.73 (c) 4.83 (d) 4.63
  13. 13.7.76 + 4.2 = ? (a) 11.96 (b) 11.86 (c) 8.18 (d) 12.06
  14. 14.What is the value of the digit 2 in 13.529? (a) 0.02 (b) 0.2 (c) 2 (d) 0.002
  15. 15.Which is the greatest: 0.74, 0.086, 0.7, 0.666? (a) 0.74 (b) 0.086 (c) 0.7 (d) 0.666
  16. 16.Which is the greatest: 0.436, 0.5, 0.59, 0.062? (a) 0.436 (b) 0.5 (c) 0.59 (d) 0.062
  17. 17.What is the value of the digit 9 in 81.629? (a) 0.09 (b) 0.009 (c) 9 (d) 0.9
  18. 18.4.07 + 1.6 = ? (a) 5.57 (b) 5.67 (c) 4.23 (d) 5.77
  19. 19.What is the value of the digit 5 in 46.512? (a) 5 (b) 0.005 (c) 0.05 (d) 0.5
  20. 20.Which is the smallest: 0.75, 0.623, 0.066, 0.7? (a) 0.75 (b) 0.623 (c) 0.066 (d) 0.7
  21. 21.What is the value of the digit 8 in 21.684? (a) 0.008 (b) 8 (c) 0.08 (d) 0.8
  22. 22.What is the value of the digit 9 in 95.431? (a) 0.09 (b) 0.9 (c) 9 (d) 90
  23. 23.Which is the greatest: 0.6, 0.67, 0.052, 0.575? (a) 0.6 (b) 0.67 (c) 0.052 (d) 0.575
  24. 24.Which is the greatest: 0.72, 0.678, 0.7, 0.012? (a) 0.72 (b) 0.678 (c) 0.7 (d) 0.012
  25. 25.Which is the smallest: 0.089, 0.3, 0.38, 0.281? (a) 0.089 (b) 0.3 (c) 0.38 (d) 0.281
  26. 26.Which is the greatest: 0.2, 0.015, 0.25, 0.164? (a) 0.2 (b) 0.015 (c) 0.25 (d) 0.164
  27. 27.Which is the smallest: 0.3, 0.39, 0.071, 0.212? (a) 0.3 (b) 0.39 (c) 0.071 (d) 0.212
  28. 28.What is the value of the digit 3 in 84.239? (a) 0.003 (b) 3 (c) 0.3 (d) 0.03
  29. 29.5.01 + 3.3 = ? (a) 8.31 (b) 8.41 (c) 5.34 (d) 8.21
  30. 30.Which is the smallest: 0.615, 0.084, 0.7, 0.72? (a) 0.615 (b) 0.084 (c) 0.7 (d) 0.72
  31. 31.3.11 + 4.9 = ? (a) 8.01 (b) 8.11 (c) 7.91 (d) 3.6
  32. 32.What is the value of the digit 3 in 21.359? (a) 0.3 (b) 3 (c) 0.03 (d) 0.003
  33. 33.Which is the greatest: 0.3, 0.39, 0.038, 0.236? (a) 0.3 (b) 0.39 (c) 0.038 (d) 0.236
  34. 34.4.69 + 8.8 = ? (a) 5.57 (b) 13.39 (c) 13.49 (d) 13.59
  35. 35.What is the value of the digit 5 in 35.129? (a) 0.5 (b) 50 (c) 0.05 (d) 5
  36. 36.6.86 + 9.2 = ? (a) 7.78 (b) 16.06 (c) 15.96 (d) 16.16
  37. 37.5.41 + 6.7 = ? (a) 12.11 (b) 6.08 (c) 12.01 (d) 12.21
  38. 38.7.07 + 2.6 = ? (a) 9.57 (b) 9.77 (c) 7.33 (d) 9.67
  39. 39.3.94 + 7.4 = ? (a) 11.34 (b) 4.68 (c) 11.44 (d) 11.24
  40. 40.9.54 + 5.4 = ? (a) 10.08 (b) 14.84 (c) 15.04 (d) 14.94

Answer key

  1. 0.36
  2. 6.59
  3. 11.78
  4. 0.054
  5. 11.89
  6. 11.14
  7. 0.003
  8. 0.034
  9. 0.36
  10. 4.88
  11. 0.08
  12. 4.73
  13. 11.96
  14. 0.02
  15. 0.74
  16. 0.59
  17. 0.009
  18. 5.67
  19. 0.5
  20. 0.066
  21. 0.08
  22. 90
  23. 0.67
  24. 0.72
  25. 0.089
  26. 0.25
  27. 0.071
  28. 0.03
  29. 8.31
  30. 0.084
  31. 8.01
  32. 0.3
  33. 0.39
  34. 13.49
  35. 5
  36. 16.06
  37. 12.11
  38. 9.67
  39. 11.34
  40. 14.94

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