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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 397 · 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. 1.4.61 + 6.1 = ? (a) 5.22 (b) 10.61 (c) 10.71 (d) 10.81
  2. 2.8.89 + 7.9 = ? (a) 9.68 (b) 16.79 (c) 16.69 (d) 16.89
  3. 3.What is the value of the digit 9 in 35.927? (a) 9 (b) 0.9 (c) 0.009 (d) 0.09
  4. 4.Which is the smallest: 0.037, 0.465, 0.52, 0.5? (a) 0.037 (b) 0.465 (c) 0.52 (d) 0.5
  5. 5.What is the value of the digit 5 in 85.432? (a) 0.05 (b) 50 (c) 5 (d) 0.5
  6. 6.What is the value of the digit 6 in 83.692? (a) 6 (b) 0.006 (c) 0.06 (d) 0.6
  7. 7.Which is the smallest: 0.75, 0.062, 0.612, 0.7? (a) 0.75 (b) 0.062 (c) 0.612 (d) 0.7
  8. 8.Which is the greatest: 0.126, 0.27, 0.2, 0.041? (a) 0.126 (b) 0.27 (c) 0.2 (d) 0.041
  9. 9.What is the value of the digit 8 in 94.872? (a) 0.08 (b) 8 (c) 0.8 (d) 0.008
  10. 10.What is the value of the digit 5 in 78.459? (a) 5 (b) 0.005 (c) 0.05 (d) 0.5
  11. 11.What is the value of the digit 1 in 25.169? (a) 1 (b) 0.01 (c) 0.1 (d) 0.001
  12. 12.What is the value of the digit 9 in 68.179? (a) 0.009 (b) 0.09 (c) 9 (d) 0.9
  13. 13.Which is the smallest: 0.84, 0.8, 0.758, 0.025? (a) 0.84 (b) 0.8 (c) 0.758 (d) 0.025
  14. 14.What is the value of the digit 1 in 71.843? (a) 0.01 (b) 10 (c) 0.1 (d) 1
  15. 15.7.31 + 3.2 = ? (a) 10.41 (b) 10.61 (c) 10.51 (d) 7.63
  16. 16.What is the value of the digit 7 in 39.725? (a) 0.7 (b) 0.007 (c) 7 (d) 0.07
  17. 17.Which is the greatest: 0.431, 0.022, 0.51, 0.5? (a) 0.431 (b) 0.022 (c) 0.51 (d) 0.5
  18. 18.Which is the smallest: 0.018, 0.8, 0.718, 0.85? (a) 0.018 (b) 0.8 (c) 0.718 (d) 0.85
  19. 19.Which is the smallest: 0.051, 0.6, 0.558, 0.69? (a) 0.051 (b) 0.6 (c) 0.558 (d) 0.69
  20. 20.2.67 + 1.7 = ? (a) 4.47 (b) 2.84 (c) 4.37 (d) 4.27
  21. 21.Which is the greatest: 0.424, 0.52, 0.017, 0.5? (a) 0.424 (b) 0.52 (c) 0.017 (d) 0.5
  22. 22.Which is the greatest: 0.4, 0.48, 0.319, 0.033? (a) 0.4 (b) 0.48 (c) 0.319 (d) 0.033
  23. 23.1.21 + 9.2 = ? (a) 10.31 (b) 2.13 (c) 10.51 (d) 10.41
  24. 24.3.48 + 2.6 = ? (a) 5.98 (b) 3.74 (c) 6.18 (d) 6.08
  25. 25.Which is the smallest: 0.039, 0.3, 0.34, 0.252? (a) 0.039 (b) 0.3 (c) 0.34 (d) 0.252
  26. 26.8.01 + 5.5 = ? (a) 13.61 (b) 13.51 (c) 13.41 (d) 8.56
  27. 27.Which is the greatest: 0.8, 0.769, 0.82, 0.052? (a) 0.8 (b) 0.769 (c) 0.82 (d) 0.052
  28. 28.What is the value of the digit 2 in 74.132? (a) 0.2 (b) 2 (c) 0.02 (d) 0.002
  29. 29.What is the value of the digit 4 in 98.624? (a) 0.4 (b) 4 (c) 0.04 (d) 0.004
  30. 30.What is the value of the digit 6 in 94.236? (a) 0.06 (b) 0.006 (c) 6 (d) 0.6
  31. 31.Which is the greatest: 0.096, 0.2, 0.22, 0.153? (a) 0.096 (b) 0.2 (c) 0.22 (d) 0.153
  32. 32.Which is the smallest: 0.023, 0.56, 0.428, 0.5? (a) 0.023 (b) 0.56 (c) 0.428 (d) 0.5
  33. 33.What is the value of the digit 5 in 42.365? (a) 5 (b) 0.5 (c) 0.005 (d) 0.05
  34. 34.6.95 + 2.7 = ? (a) 7.22 (b) 9.55 (c) 9.75 (d) 9.65
  35. 35.1.63 + 2.3 = ? (a) 4.03 (b) 3.93 (c) 1.86 (d) 3.83
  36. 36.Which is the smallest: 0.621, 0.028, 0.7, 0.76? (a) 0.621 (b) 0.028 (c) 0.7 (d) 0.76
  37. 37.Which is the greatest: 0.216, 0.073, 0.3, 0.36? (a) 0.216 (b) 0.073 (c) 0.3 (d) 0.36
  38. 38.1.62 + 6.1 = ? (a) 7.82 (b) 2.23 (c) 7.62 (d) 7.72
  39. 39.4.81 + 3.1 = ? (a) 7.81 (b) 7.91 (c) 5.12 (d) 8.01
  40. 40.Which is the greatest: 0.754, 0.81, 0.8, 0.064? (a) 0.754 (b) 0.81 (c) 0.8 (d) 0.064

Answer key

  1. 10.71
  2. 16.79
  3. 0.9
  4. 0.037
  5. 5
  6. 0.6
  7. 0.062
  8. 0.27
  9. 0.8
  10. 0.05
  11. 0.1
  12. 0.009
  13. 0.025
  14. 1
  15. 10.51
  16. 0.7
  17. 0.51
  18. 0.018
  19. 0.051
  20. 4.37
  21. 0.52
  22. 0.48
  23. 10.41
  24. 6.08
  25. 0.039
  26. 13.51
  27. 0.82
  28. 0.002
  29. 0.004
  30. 0.006
  31. 0.22
  32. 0.023
  33. 0.005
  34. 9.65
  35. 3.93
  36. 0.028
  37. 0.36
  38. 7.72
  39. 7.91
  40. 0.81

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