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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 553 · 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.What is the value of the digit 9 in 79.514? (a) 9 (b) 0.09 (c) 0.9 (d) 90
  2. 2.3.83 + 1.9 = ? (a) 5.83 (b) 4.02 (c) 5.73 (d) 5.63
  3. 3.4.47 + 9.1 = ? (a) 13.47 (b) 13.57 (c) 13.67 (d) 5.38
  4. 4.2.98 + 9.1 = ? (a) 11.98 (b) 12.08 (c) 3.89 (d) 12.18
  5. 5.What is the value of the digit 3 in 93.124? (a) 3 (b) 0.3 (c) 0.03 (d) 30
  6. 6.Which is the greatest: 0.3, 0.221, 0.32, 0.027? (a) 0.3 (b) 0.221 (c) 0.32 (d) 0.027
  7. 7.Which is the smallest: 0.8, 0.771, 0.065, 0.81? (a) 0.8 (b) 0.771 (c) 0.065 (d) 0.81
  8. 8.3.22 + 4.6 = ? (a) 7.72 (b) 7.82 (c) 7.92 (d) 3.68
  9. 9.2.24 + 1.2 = ? (a) 3.44 (b) 3.54 (c) 3.34 (d) 2.36
  10. 10.What is the value of the digit 5 in 51.243? (a) 50 (b) 5 (c) 0.5 (d) 0.05
  11. 11.6.81 + 3.1 = ? (a) 7.12 (b) 9.91 (c) 10.01 (d) 9.81
  12. 12.Which is the greatest: 0.6, 0.573, 0.62, 0.047? (a) 0.6 (b) 0.573 (c) 0.62 (d) 0.047
  13. 13.9.46 + 6.7 = ? (a) 16.06 (b) 10.13 (c) 16.26 (d) 16.16
  14. 14.What is the value of the digit 7 in 17.325? (a) 7 (b) 0.07 (c) 70 (d) 0.7
  15. 15.1.64 + 7.3 = ? (a) 9.04 (b) 8.94 (c) 8.84 (d) 2.37
  16. 16.2.92 + 1.8 = ? (a) 3.1 (b) 4.62 (c) 4.72 (d) 4.82
  17. 17.3.53 + 9.1 = ? (a) 12.63 (b) 12.53 (c) 12.73 (d) 4.44
  18. 18.What is the value of the digit 5 in 54.239? (a) 5 (b) 0.5 (c) 0.05 (d) 50
  19. 19.9.97 + 2.1 = ? (a) 10.18 (b) 12.07 (c) 11.97 (d) 12.17
  20. 20.What is the value of the digit 3 in 32.819? (a) 30 (b) 3 (c) 0.3 (d) 0.03
  21. 21.What is the value of the digit 6 in 64.315? (a) 6 (b) 0.06 (c) 0.6 (d) 60
  22. 22.2.66 + 8.9 = ? (a) 11.46 (b) 3.55 (c) 11.66 (d) 11.56
  23. 23.What is the value of the digit 7 in 35.167? (a) 0.7 (b) 0.007 (c) 0.07 (d) 7
  24. 24.4.93 + 5.2 = ? (a) 10.13 (b) 5.45 (c) 10.03 (d) 10.23
  25. 25.Which is the smallest: 0.2, 0.111, 0.047, 0.29? (a) 0.2 (b) 0.111 (c) 0.047 (d) 0.29
  26. 26.3.11 + 9.9 = ? (a) 4.1 (b) 12.91 (c) 13.11 (d) 13.01
  27. 27.What is the value of the digit 1 in 31.964? (a) 0.1 (b) 0.01 (c) 1 (d) 10
  28. 28.8.75 + 3.6 = ? (a) 12.35 (b) 9.11 (c) 12.25 (d) 12.45
  29. 29.4.26 + 3.3 = ? (a) 7.66 (b) 4.59 (c) 7.56 (d) 7.46
  30. 30.Which is the greatest: 0.64, 0.581, 0.088, 0.6? (a) 0.64 (b) 0.581 (c) 0.088 (d) 0.6
  31. 31.What is the value of the digit 5 in 92.534? (a) 5 (b) 0.05 (c) 0.5 (d) 0.005
  32. 32.2.15 + 6.3 = ? (a) 8.45 (b) 8.35 (c) 8.55 (d) 2.78
  33. 33.What is the value of the digit 9 in 95.871? (a) 0.09 (b) 9 (c) 0.9 (d) 90
  34. 34.1.94 + 4.2 = ? (a) 6.24 (b) 6.14 (c) 6.04 (d) 2.36
  35. 35.What is the value of the digit 9 in 89.345? (a) 0.09 (b) 0.9 (c) 9 (d) 90
  36. 36.5.02 + 1.7 = ? (a) 5.19 (b) 6.62 (c) 6.72 (d) 6.82
  37. 37.What is the value of the digit 5 in 71.596? (a) 5 (b) 0.005 (c) 0.5 (d) 0.05
  38. 38.Which is the smallest: 0.091, 0.392, 0.4, 0.46? (a) 0.091 (b) 0.392 (c) 0.4 (d) 0.46
  39. 39.What is the value of the digit 5 in 59.271? (a) 5 (b) 0.05 (c) 50 (d) 0.5
  40. 40.Which is the smallest: 0.088, 0.7, 0.73, 0.677? (a) 0.088 (b) 0.7 (c) 0.73 (d) 0.677

Answer key

  1. 9
  2. 5.73
  3. 13.57
  4. 12.08
  5. 3
  6. 0.32
  7. 0.065
  8. 7.82
  9. 3.44
  10. 50
  11. 9.91
  12. 0.62
  13. 16.16
  14. 7
  15. 8.94
  16. 4.72
  17. 12.63
  18. 50
  19. 12.07
  20. 30
  21. 60
  22. 11.56
  23. 0.007
  24. 10.13
  25. 0.047
  26. 13.01
  27. 1
  28. 12.35
  29. 7.56
  30. 0.64
  31. 0.5
  32. 8.45
  33. 90
  34. 6.14
  35. 9
  36. 6.72
  37. 0.5
  38. 0.091
  39. 50
  40. 0.088

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