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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 652 · 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. 1.1.22 + 7.3 = ? (a) 1.95 (b) 8.62 (c) 8.52 (d) 8.42
  2. 2.Which is the greatest: 0.033, 0.554, 0.6, 0.61? (a) 0.033 (b) 0.554 (c) 0.6 (d) 0.61
  3. 3.4.95 + 3.7 = ? (a) 5.32 (b) 8.75 (c) 8.65 (d) 8.55
  4. 4.What is the value of the digit 9 in 96.758? (a) 90 (b) 0.9 (c) 0.09 (d) 9
  5. 5.Which is the greatest: 0.565, 0.63, 0.6, 0.094? (a) 0.565 (b) 0.63 (c) 0.6 (d) 0.094
  6. 6.3.88 + 4.2 = ? (a) 4.3 (b) 7.98 (c) 8.18 (d) 8.08
  7. 7.3.24 + 7.5 = ? (a) 10.84 (b) 3.99 (c) 10.64 (d) 10.74
  8. 8.2.75 + 8.4 = ? (a) 11.15 (b) 11.25 (c) 11.05 (d) 3.59
  9. 9.Which is the greatest: 0.23, 0.082, 0.187, 0.2? (a) 0.23 (b) 0.082 (c) 0.187 (d) 0.2
  10. 10.5.01 + 2.1 = ? (a) 7.21 (b) 5.22 (c) 7.01 (d) 7.11
  11. 11.1.11 + 5.9 = ? (a) 1.7 (b) 7.11 (c) 6.91 (d) 7.01
  12. 12.8.18 + 3.3 = ? (a) 8.51 (b) 11.58 (c) 11.48 (d) 11.38
  13. 13.What is the value of the digit 1 in 19.354? (a) 1 (b) 0.01 (c) 10 (d) 0.1
  14. 14.2.93 + 4.8 = ? (a) 7.83 (b) 7.73 (c) 7.63 (d) 3.41
  15. 15.Which is the smallest: 0.2, 0.27, 0.164, 0.066? (a) 0.2 (b) 0.27 (c) 0.164 (d) 0.066
  16. 16.What is the value of the digit 5 in 35.126? (a) 0.05 (b) 5 (c) 0.5 (d) 50
  17. 17.Which is the smallest: 0.82, 0.047, 0.8, 0.732? (a) 0.82 (b) 0.047 (c) 0.8 (d) 0.732
  18. 18.Which is the greatest: 0.225, 0.049, 0.34, 0.3? (a) 0.225 (b) 0.049 (c) 0.34 (d) 0.3
  19. 19.What is the value of the digit 4 in 34.982? (a) 0.4 (b) 4 (c) 0.04 (d) 40
  20. 20.8.73 + 1.6 = ? (a) 10.43 (b) 8.89 (c) 10.33 (d) 10.23
  21. 21.1.31 + 2.7 = ? (a) 4.11 (b) 4.01 (c) 1.58 (d) 3.91
  22. 22.Which is the smallest: 0.032, 0.149, 0.22, 0.2? (a) 0.032 (b) 0.149 (c) 0.22 (d) 0.2
  23. 23.8.66 + 2.2 = ? (a) 10.96 (b) 10.86 (c) 10.76 (d) 8.88
  24. 24.4.83 + 3.1 = ? (a) 5.14 (b) 8.03 (c) 7.83 (d) 7.93
  25. 25.Which is the smallest: 0.789, 0.038, 0.81, 0.8? (a) 0.789 (b) 0.038 (c) 0.81 (d) 0.8
  26. 26.What is the value of the digit 8 in 83.124? (a) 0.8 (b) 80 (c) 0.08 (d) 8
  27. 27.Which is the smallest: 0.015, 0.3, 0.269, 0.31? (a) 0.015 (b) 0.3 (c) 0.269 (d) 0.31
  28. 28.8.61 + 7.7 = ? (a) 9.38 (b) 16.41 (c) 16.31 (d) 16.21
  29. 29.6.86 + 3.1 = ? (a) 10.06 (b) 9.86 (c) 7.17 (d) 9.96
  30. 30.What is the value of the digit 3 in 38.521? (a) 30 (b) 0.03 (c) 3 (d) 0.3
  31. 31.What is the value of the digit 7 in 73.156? (a) 0.7 (b) 7 (c) 70 (d) 0.07
  32. 32.Which is the greatest: 0.178, 0.29, 0.092, 0.2? (a) 0.178 (b) 0.29 (c) 0.092 (d) 0.2
  33. 33.3.02 + 2.9 = ? (a) 3.31 (b) 6.02 (c) 5.82 (d) 5.92
  34. 34.What is the value of the digit 2 in 61.832? (a) 0.2 (b) 2 (c) 0.02 (d) 0.002
  35. 35.1.14 + 5.3 = ? (a) 6.54 (b) 6.34 (c) 1.67 (d) 6.44
  36. 36.9.59 + 8.2 = ? (a) 17.69 (b) 17.79 (c) 17.89 (d) 10.41
  37. 37.Which is the greatest: 0.81, 0.035, 0.779, 0.8? (a) 0.81 (b) 0.035 (c) 0.779 (d) 0.8
  38. 38.What is the value of the digit 3 in 35.821? (a) 30 (b) 3 (c) 0.03 (d) 0.3
  39. 39.2.29 + 9.1 = ? (a) 3.2 (b) 11.39 (c) 11.29 (d) 11.49
  40. 40.3.71 + 4.2 = ? (a) 8.01 (b) 7.91 (c) 7.81 (d) 4.13

Answer key

  1. 8.52
  2. 0.61
  3. 8.65
  4. 90
  5. 0.63
  6. 8.08
  7. 10.74
  8. 11.15
  9. 0.23
  10. 7.11
  11. 7.01
  12. 11.48
  13. 10
  14. 7.73
  15. 0.066
  16. 5
  17. 0.047
  18. 0.34
  19. 4
  20. 10.33
  21. 4.01
  22. 0.032
  23. 10.86
  24. 7.93
  25. 0.038
  26. 80
  27. 0.015
  28. 16.31
  29. 9.96
  30. 30
  31. 70
  32. 0.29
  33. 5.92
  34. 0.002
  35. 6.44
  36. 17.79
  37. 0.81
  38. 30
  39. 11.39
  40. 7.91

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