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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 800 · 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. 1.3.69 + 6.1 = ? (a) 9.89 (b) 9.79 (c) 9.69 (d) 4.3
  2. 2.Which is the smallest: 0.44, 0.4, 0.377, 0.086? (a) 0.44 (b) 0.4 (c) 0.377 (d) 0.086
  3. 3.What is the value of the digit 1 in 58.192? (a) 1 (b) 0.1 (c) 0.001 (d) 0.01
  4. 4.1.42 + 8.6 = ? (a) 10.02 (b) 2.28 (c) 9.92 (d) 10.12
  5. 5.5.26 + 1.1 = ? (a) 6.46 (b) 6.26 (c) 6.36 (d) 5.37
  6. 6.What is the value of the digit 9 in 34.259? (a) 0.009 (b) 9 (c) 0.09 (d) 0.9
  7. 7.What is the value of the digit 8 in 81.532? (a) 80 (b) 0.8 (c) 0.08 (d) 8
  8. 8.6.61 + 3.2 = ? (a) 6.93 (b) 9.71 (c) 9.81 (d) 9.91
  9. 9.What is the value of the digit 2 in 25.761? (a) 0.2 (b) 20 (c) 0.02 (d) 2
  10. 10.Which is the greatest: 0.59, 0.5, 0.476, 0.015? (a) 0.59 (b) 0.5 (c) 0.476 (d) 0.015
  11. 11.6.71 + 8.2 = ? (a) 14.91 (b) 14.81 (c) 15.01 (d) 7.53
  12. 12.7.23 + 2.5 = ? (a) 7.48 (b) 9.63 (c) 9.73 (d) 9.83
  13. 13.What is the value of the digit 1 in 91.528? (a) 0.01 (b) 1 (c) 0.1 (d) 10
  14. 14.2.36 + 7.6 = ? (a) 10.06 (b) 3.12 (c) 9.96 (d) 9.86
  15. 15.1.17 + 7.7 = ? (a) 8.87 (b) 8.77 (c) 8.97 (d) 1.94
  16. 16.Which is the greatest: 0.5, 0.59, 0.443, 0.082? (a) 0.5 (b) 0.59 (c) 0.443 (d) 0.082
  17. 17.What is the value of the digit 2 in 37.124? (a) 0.2 (b) 0.002 (c) 2 (d) 0.02
  18. 18.3.56 + 6.9 = ? (a) 10.46 (b) 10.36 (c) 4.25 (d) 10.56
  19. 19.What is the value of the digit 2 in 24.719? (a) 20 (b) 2 (c) 0.02 (d) 0.2
  20. 20.3.16 + 1.7 = ? (a) 4.96 (b) 3.33 (c) 4.76 (d) 4.86
  21. 21.What is the value of the digit 2 in 53.281? (a) 0.2 (b) 0.002 (c) 2 (d) 0.02
  22. 22.What is the value of the digit 2 in 27.965? (a) 20 (b) 2 (c) 0.2 (d) 0.02
  23. 23.1.16 + 1.8 = ? (a) 2.96 (b) 1.34 (c) 3.06 (d) 2.86
  24. 24.8.63 + 1.6 = ? (a) 10.23 (b) 10.33 (c) 10.13 (d) 8.79
  25. 25.4.05 + 2.1 = ? (a) 4.26 (b) 6.15 (c) 6.25 (d) 6.05
  26. 26.8.94 + 5.1 = ? (a) 13.94 (b) 14.04 (c) 9.45 (d) 14.14
  27. 27.What is the value of the digit 5 in 95.821? (a) 0.05 (b) 50 (c) 5 (d) 0.5
  28. 28.What is the value of the digit 4 in 16.489? (a) 0.004 (b) 0.4 (c) 4 (d) 0.04
  29. 29.4.72 + 4.7 = ? (a) 9.52 (b) 5.19 (c) 9.32 (d) 9.42
  30. 30.7.61 + 7.9 = ? (a) 15.41 (b) 8.4 (c) 15.61 (d) 15.51
  31. 31.Which is the greatest: 0.28, 0.147, 0.023, 0.2? (a) 0.28 (b) 0.147 (c) 0.023 (d) 0.2
  32. 32.9.56 + 4.5 = ? (a) 14.06 (b) 14.16 (c) 10.01 (d) 13.96
  33. 33.What is the value of the digit 4 in 84.263? (a) 40 (b) 0.4 (c) 4 (d) 0.04
  34. 34.What is the value of the digit 7 in 73.285? (a) 0.7 (b) 0.07 (c) 7 (d) 70
  35. 35.9.02 + 3.1 = ? (a) 9.33 (b) 12.12 (c) 12.02 (d) 12.22
  36. 36.What is the value of the digit 6 in 23.569? (a) 0.006 (b) 6 (c) 0.06 (d) 0.6
  37. 37.What is the value of the digit 1 in 21.457? (a) 1 (b) 0.1 (c) 0.01 (d) 10
  38. 38.What is the value of the digit 3 in 49.385? (a) 0.03 (b) 0.3 (c) 0.003 (d) 3
  39. 39.7.29 + 7.1 = ? (a) 14.49 (b) 14.39 (c) 8 (d) 14.29
  40. 40.What is the value of the digit 3 in 31.825? (a) 3 (b) 0.03 (c) 0.3 (d) 30

Answer key

  1. 9.79
  2. 0.086
  3. 0.1
  4. 10.02
  5. 6.36
  6. 0.009
  7. 80
  8. 9.81
  9. 20
  10. 0.59
  11. 14.91
  12. 9.73
  13. 1
  14. 9.96
  15. 8.87
  16. 0.59
  17. 0.02
  18. 10.46
  19. 20
  20. 4.86
  21. 0.2
  22. 20
  23. 2.96
  24. 10.23
  25. 6.15
  26. 14.04
  27. 5
  28. 0.4
  29. 9.42
  30. 15.51
  31. 0.28
  32. 14.06
  33. 4
  34. 70
  35. 12.12
  36. 0.06
  37. 1
  38. 0.3
  39. 14.39
  40. 30

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