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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 698 · 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. 1.3.97 + 3.1 = ? (a) 6.97 (b) 4.28 (c) 7.17 (d) 7.07
  2. 2.Which is the smallest: 0.081, 0.65, 0.6, 0.544? (a) 0.081 (b) 0.65 (c) 0.6 (d) 0.544
  3. 3.1.88 + 8.3 = ? (a) 10.28 (b) 2.71 (c) 10.08 (d) 10.18
  4. 4.7.41 + 4.1 = ? (a) 11.41 (b) 11.61 (c) 11.51 (d) 7.82
  5. 5.What is the value of the digit 7 in 72.136? (a) 70 (b) 7 (c) 0.07 (d) 0.7
  6. 6.7.85 + 1.7 = ? (a) 8.02 (b) 9.55 (c) 9.65 (d) 9.45
  7. 7.2.25 + 2.2 = ? (a) 2.47 (b) 4.45 (c) 4.55 (d) 4.35
  8. 8.6.25 + 2.3 = ? (a) 6.48 (b) 8.45 (c) 8.65 (d) 8.55
  9. 9.5.66 + 6.7 = ? (a) 12.36 (b) 6.33 (c) 12.26 (d) 12.46
  10. 10.Which is the greatest: 0.054, 0.651, 0.7, 0.71? (a) 0.054 (b) 0.651 (c) 0.7 (d) 0.71
  11. 11.What is the value of the digit 6 in 27.861? (a) 0.006 (b) 0.06 (c) 0.6 (d) 6
  12. 12.3.52 + 7.1 = ? (a) 10.72 (b) 10.52 (c) 4.23 (d) 10.62
  13. 13.7.85 + 3.6 = ? (a) 11.35 (b) 8.21 (c) 11.55 (d) 11.45
  14. 14.What is the value of the digit 6 in 87.269? (a) 0.6 (b) 0.006 (c) 6 (d) 0.06
  15. 15.6.99 + 7.8 = ? (a) 14.79 (b) 14.89 (c) 7.77 (d) 14.69
  16. 16.Which is the smallest: 0.615, 0.78, 0.082, 0.7? (a) 0.615 (b) 0.78 (c) 0.082 (d) 0.7
  17. 17.What is the value of the digit 5 in 17.568? (a) 0.05 (b) 5 (c) 0.005 (d) 0.5
  18. 18.What is the value of the digit 9 in 73.529? (a) 0.09 (b) 9 (c) 0.9 (d) 0.009
  19. 19.6.58 + 2.1 = ? (a) 8.78 (b) 8.58 (c) 6.79 (d) 8.68
  20. 20.8.13 + 6.1 = ? (a) 8.74 (b) 14.33 (c) 14.23 (d) 14.13
  21. 21.1.87 + 6.9 = ? (a) 8.87 (b) 8.77 (c) 2.56 (d) 8.67
  22. 22.What is the value of the digit 1 in 84.172? (a) 0.01 (b) 1 (c) 0.001 (d) 0.1
  23. 23.1.63 + 6.8 = ? (a) 8.53 (b) 8.33 (c) 2.31 (d) 8.43
  24. 24.Which is the greatest: 0.525, 0.6, 0.65, 0.032? (a) 0.525 (b) 0.6 (c) 0.65 (d) 0.032
  25. 25.4.29 + 9.5 = ? (a) 13.89 (b) 5.24 (c) 13.79 (d) 13.69
  26. 26.What is the value of the digit 6 in 37.516? (a) 0.6 (b) 0.06 (c) 0.006 (d) 6
  27. 27.What is the value of the digit 6 in 83.961? (a) 6 (b) 0.006 (c) 0.06 (d) 0.6
  28. 28.What is the value of the digit 9 in 92.768? (a) 0.9 (b) 0.09 (c) 9 (d) 90
  29. 29.What is the value of the digit 2 in 24.195? (a) 2 (b) 0.02 (c) 0.2 (d) 20
  30. 30.1.02 + 1.2 = ? (a) 2.12 (b) 1.14 (c) 2.22 (d) 2.32
  31. 31.Which is the greatest: 0.071, 0.169, 0.26, 0.2? (a) 0.071 (b) 0.169 (c) 0.26 (d) 0.2
  32. 32.Which is the greatest: 0.575, 0.64, 0.6, 0.034? (a) 0.575 (b) 0.64 (c) 0.6 (d) 0.034
  33. 33.What is the value of the digit 2 in 52.471? (a) 0.02 (b) 20 (c) 0.2 (d) 2
  34. 34.What is the value of the digit 1 in 13.297? (a) 0.1 (b) 1 (c) 0.01 (d) 10
  35. 35.Which is the greatest: 0.153, 0.088, 0.22, 0.2? (a) 0.153 (b) 0.088 (c) 0.22 (d) 0.2
  36. 36.What is the value of the digit 6 in 15.367? (a) 6 (b) 0.06 (c) 0.6 (d) 0.006
  37. 37.Which is the smallest: 0.086, 0.21, 0.2, 0.139? (a) 0.086 (b) 0.21 (c) 0.2 (d) 0.139
  38. 38.What is the value of the digit 2 in 97.268? (a) 2 (b) 0.002 (c) 0.2 (d) 0.02
  39. 39.5.43 + 8.7 = ? (a) 6.3 (b) 14.23 (c) 14.03 (d) 14.13
  40. 40.What is the value of the digit 3 in 35.647? (a) 30 (b) 3 (c) 0.03 (d) 0.3

Answer key

  1. 7.07
  2. 0.081
  3. 10.18
  4. 11.51
  5. 70
  6. 9.55
  7. 4.45
  8. 8.55
  9. 12.36
  10. 0.71
  11. 0.06
  12. 10.62
  13. 11.45
  14. 0.06
  15. 14.79
  16. 0.082
  17. 0.5
  18. 0.009
  19. 8.68
  20. 14.23
  21. 8.77
  22. 0.1
  23. 8.43
  24. 0.65
  25. 13.79
  26. 0.006
  27. 0.06
  28. 90
  29. 20
  30. 2.22
  31. 0.26
  32. 0.64
  33. 2
  34. 10
  35. 0.22
  36. 0.06
  37. 0.086
  38. 0.2
  39. 14.13
  40. 30

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