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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 452 · 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. 1.1.46 + 4.8 = ? (a) 1.94 (b) 6.36 (c) 6.26 (d) 6.16
  2. 2.Which is the smallest: 0.687, 0.76, 0.022, 0.7? (a) 0.687 (b) 0.76 (c) 0.022 (d) 0.7
  3. 3.What is the value of the digit 4 in 79.246? (a) 0.4 (b) 4 (c) 0.04 (d) 0.004
  4. 4.Which is the greatest: 0.017, 0.74, 0.699, 0.7? (a) 0.017 (b) 0.74 (c) 0.699 (d) 0.7
  5. 5.What is the value of the digit 3 in 34.276? (a) 0.03 (b) 3 (c) 30 (d) 0.3
  6. 6.What is the value of the digit 7 in 91.457? (a) 0.07 (b) 0.007 (c) 7 (d) 0.7
  7. 7.6.48 + 9.1 = ? (a) 7.39 (b) 15.68 (c) 15.48 (d) 15.58
  8. 8.Which is the smallest: 0.316, 0.016, 0.46, 0.4? (a) 0.316 (b) 0.016 (c) 0.46 (d) 0.4
  9. 9.4.26 + 2.1 = ? (a) 4.47 (b) 6.46 (c) 6.26 (d) 6.36
  10. 10.Which is the smallest: 0.019, 0.67, 0.6, 0.556? (a) 0.019 (b) 0.67 (c) 0.6 (d) 0.556
  11. 11.1.81 + 5.8 = ? (a) 7.71 (b) 7.61 (c) 7.51 (d) 2.39
  12. 12.Which is the smallest: 0.072, 0.23, 0.122, 0.2? (a) 0.072 (b) 0.23 (c) 0.122 (d) 0.2
  13. 13.What is the value of the digit 7 in 57.138? (a) 0.07 (b) 7 (c) 0.7 (d) 70
  14. 14.What is the value of the digit 2 in 97.521? (a) 0.2 (b) 0.02 (c) 2 (d) 0.002
  15. 15.7.97 + 8.1 = ? (a) 15.97 (b) 8.78 (c) 16.17 (d) 16.07
  16. 16.What is the value of the digit 1 in 94.123? (a) 0.01 (b) 1 (c) 0.1 (d) 0.001
  17. 17.Which is the smallest: 0.226, 0.056, 0.32, 0.3? (a) 0.226 (b) 0.056 (c) 0.32 (d) 0.3
  18. 18.What is the value of the digit 4 in 54.829? (a) 4 (b) 0.4 (c) 40 (d) 0.04
  19. 19.1.21 + 1.1 = ? (a) 2.21 (b) 2.31 (c) 2.41 (d) 1.32
  20. 20.Which is the greatest: 0.8, 0.82, 0.759, 0.035? (a) 0.8 (b) 0.82 (c) 0.759 (d) 0.035
  21. 21.Which is the smallest: 0.398, 0.41, 0.032, 0.4? (a) 0.398 (b) 0.41 (c) 0.032 (d) 0.4
  22. 22.9.54 + 7.6 = ? (a) 17.24 (b) 10.3 (c) 17.04 (d) 17.14
  23. 23.What is the value of the digit 6 in 16.495? (a) 6 (b) 60 (c) 0.6 (d) 0.06
  24. 24.What is the value of the digit 9 in 81.629? (a) 0.9 (b) 0.009 (c) 9 (d) 0.09
  25. 25.2.76 + 6.2 = ? (a) 8.86 (b) 3.38 (c) 8.96 (d) 9.06
  26. 26.What is the value of the digit 3 in 36.748? (a) 0.3 (b) 30 (c) 0.03 (d) 3
  27. 27.2.05 + 4.2 = ? (a) 6.25 (b) 2.47 (c) 6.35 (d) 6.15
  28. 28.Which is the greatest: 0.064, 0.78, 0.7, 0.616? (a) 0.064 (b) 0.78 (c) 0.7 (d) 0.616
  29. 29.Which is the smallest: 0.5, 0.52, 0.461, 0.047? (a) 0.5 (b) 0.52 (c) 0.461 (d) 0.047
  30. 30.What is the value of the digit 9 in 79.548? (a) 90 (b) 9 (c) 0.9 (d) 0.09
  31. 31.4.65 + 5.2 = ? (a) 9.95 (b) 9.85 (c) 5.17 (d) 9.75
  32. 32.Which is the greatest: 0.2, 0.049, 0.119, 0.23? (a) 0.2 (b) 0.049 (c) 0.119 (d) 0.23
  33. 33.What is the value of the digit 3 in 73.845? (a) 30 (b) 0.3 (c) 3 (d) 0.03
  34. 34.Which is the greatest: 0.34, 0.096, 0.3, 0.238? (a) 0.34 (b) 0.096 (c) 0.3 (d) 0.238
  35. 35.Which is the greatest: 0.024, 0.44, 0.4, 0.329? (a) 0.024 (b) 0.44 (c) 0.4 (d) 0.329
  36. 36.What is the value of the digit 5 in 49.657? (a) 5 (b) 0.005 (c) 0.05 (d) 0.5
  37. 37.3.12 + 8.4 = ? (a) 11.42 (b) 11.52 (c) 3.96 (d) 11.62
  38. 38.3.71 + 4.4 = ? (a) 4.15 (b) 8.21 (c) 8.01 (d) 8.11
  39. 39.3.89 + 1.3 = ? (a) 5.09 (b) 5.29 (c) 5.19 (d) 4.02
  40. 40.What is the value of the digit 5 in 52.481? (a) 5 (b) 50 (c) 0.05 (d) 0.5

Answer key

  1. 6.26
  2. 0.022
  3. 0.04
  4. 0.74
  5. 30
  6. 0.007
  7. 15.58
  8. 0.016
  9. 6.36
  10. 0.019
  11. 7.61
  12. 0.072
  13. 7
  14. 0.02
  15. 16.07
  16. 0.1
  17. 0.056
  18. 4
  19. 2.31
  20. 0.82
  21. 0.032
  22. 17.14
  23. 6
  24. 0.009
  25. 8.96
  26. 30
  27. 6.25
  28. 0.78
  29. 0.047
  30. 9
  31. 9.85
  32. 0.23
  33. 3
  34. 0.34
  35. 0.44
  36. 0.05
  37. 11.52
  38. 8.11
  39. 5.19
  40. 50

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