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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 644 · 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. 1.8.75 + 7.9 = ? (a) 16.75 (b) 9.54 (c) 16.55 (d) 16.65
  2. 2.1.16 + 5.9 = ? (a) 7.16 (b) 1.75 (c) 7.06 (d) 6.96
  3. 3.What is the value of the digit 1 in 21.937? (a) 1 (b) 0.1 (c) 10 (d) 0.01
  4. 4.What is the value of the digit 9 in 71.934? (a) 0.009 (b) 0.09 (c) 0.9 (d) 9
  5. 5.Which is the greatest: 0.69, 0.6, 0.075, 0.581? (a) 0.69 (b) 0.6 (c) 0.075 (d) 0.581
  6. 6.What is the value of the digit 6 in 95.634? (a) 0.006 (b) 6 (c) 0.6 (d) 0.06
  7. 7.What is the value of the digit 9 in 36.897? (a) 0.009 (b) 9 (c) 0.9 (d) 0.09
  8. 8.Which is the greatest: 0.4, 0.365, 0.049, 0.43? (a) 0.4 (b) 0.365 (c) 0.049 (d) 0.43
  9. 9.6.54 + 1.1 = ? (a) 6.65 (b) 7.74 (c) 7.64 (d) 7.54
  10. 10.Which is the greatest: 0.526, 0.62, 0.6, 0.011? (a) 0.526 (b) 0.62 (c) 0.6 (d) 0.011
  11. 11.6.21 + 5.4 = ? (a) 11.51 (b) 11.71 (c) 11.61 (d) 6.75
  12. 12.4.37 + 3.5 = ? (a) 7.87 (b) 7.97 (c) 7.77 (d) 4.72
  13. 13.Which is the greatest: 0.784, 0.8, 0.85, 0.011? (a) 0.784 (b) 0.8 (c) 0.85 (d) 0.011
  14. 14.8.27 + 8.1 = ? (a) 16.27 (b) 9.08 (c) 16.47 (d) 16.37
  15. 15.Which is the smallest: 0.256, 0.099, 0.33, 0.3? (a) 0.256 (b) 0.099 (c) 0.33 (d) 0.3
  16. 16.What is the value of the digit 1 in 54.168? (a) 1 (b) 0.001 (c) 0.01 (d) 0.1
  17. 17.What is the value of the digit 3 in 34.815? (a) 0.3 (b) 0.03 (c) 3 (d) 30
  18. 18.What is the value of the digit 6 in 61.385? (a) 0.06 (b) 6 (c) 0.6 (d) 60
  19. 19.Which is the smallest: 0.44, 0.391, 0.076, 0.4? (a) 0.44 (b) 0.391 (c) 0.076 (d) 0.4
  20. 20.7.57 + 9.1 = ? (a) 8.48 (b) 16.77 (c) 16.57 (d) 16.67
  21. 21.2.03 + 3.1 = ? (a) 2.34 (b) 5.03 (c) 5.13 (d) 5.23
  22. 22.What is the value of the digit 3 in 32.186? (a) 3 (b) 0.3 (c) 0.03 (d) 30
  23. 23.Which is the smallest: 0.323, 0.036, 0.4, 0.42? (a) 0.323 (b) 0.036 (c) 0.4 (d) 0.42
  24. 24.Which is the smallest: 0.34, 0.289, 0.042, 0.3? (a) 0.34 (b) 0.289 (c) 0.042 (d) 0.3
  25. 25.Which is the greatest: 0.4, 0.353, 0.45, 0.065? (a) 0.4 (b) 0.353 (c) 0.45 (d) 0.065
  26. 26.6.83 + 6.2 = ? (a) 13.13 (b) 7.45 (c) 12.93 (d) 13.03
  27. 27.What is the value of the digit 4 in 42.176? (a) 4 (b) 0.04 (c) 0.4 (d) 40
  28. 28.6.07 + 2.9 = ? (a) 6.36 (b) 8.87 (c) 8.97 (d) 9.07
  29. 29.Which is the greatest: 0.29, 0.093, 0.2, 0.151? (a) 0.29 (b) 0.093 (c) 0.2 (d) 0.151
  30. 30.5.81 + 1.2 = ? (a) 7.01 (b) 5.93 (c) 6.91 (d) 7.11
  31. 31.What is the value of the digit 1 in 31.284? (a) 0.01 (b) 0.1 (c) 10 (d) 1
  32. 32.Which is the greatest: 0.776, 0.8, 0.039, 0.86? (a) 0.776 (b) 0.8 (c) 0.039 (d) 0.86
  33. 33.Which is the greatest: 0.271, 0.3, 0.31, 0.037? (a) 0.271 (b) 0.3 (c) 0.31 (d) 0.037
  34. 34.Which is the smallest: 0.61, 0.6, 0.018, 0.529? (a) 0.61 (b) 0.6 (c) 0.018 (d) 0.529
  35. 35.1.51 + 1.4 = ? (a) 1.65 (b) 3.01 (c) 2.91 (d) 2.81
  36. 36.8.28 + 1.1 = ? (a) 9.38 (b) 9.28 (c) 8.39 (d) 9.48
  37. 37.6.92 + 6.6 = ? (a) 7.58 (b) 13.52 (c) 13.42 (d) 13.62
  38. 38.6.66 + 5.9 = ? (a) 12.56 (b) 12.66 (c) 7.25 (d) 12.46
  39. 39.8.48 + 1.1 = ? (a) 8.59 (b) 9.68 (c) 9.58 (d) 9.48
  40. 40.What is the value of the digit 6 in 25.346? (a) 6 (b) 0.006 (c) 0.06 (d) 0.6

Answer key

  1. 16.65
  2. 7.06
  3. 1
  4. 0.9
  5. 0.69
  6. 0.6
  7. 0.09
  8. 0.43
  9. 7.64
  10. 0.62
  11. 11.61
  12. 7.87
  13. 0.85
  14. 16.37
  15. 0.099
  16. 0.1
  17. 30
  18. 60
  19. 0.076
  20. 16.67
  21. 5.13
  22. 30
  23. 0.036
  24. 0.042
  25. 0.45
  26. 13.03
  27. 40
  28. 8.97
  29. 0.29
  30. 7.01
  31. 1
  32. 0.86
  33. 0.31
  34. 0.018
  35. 2.91
  36. 9.38
  37. 13.52
  38. 12.56
  39. 9.58
  40. 0.006

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