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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 989 · 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. 1.6.72 + 9.9 = ? (a) 16.62 (b) 16.52 (c) 7.71 (d) 16.72
  2. 2.Which is the smallest: 0.045, 0.2, 0.29, 0.148? (a) 0.045 (b) 0.2 (c) 0.29 (d) 0.148
  3. 3.3.75 + 5.1 = ? (a) 8.75 (b) 8.95 (c) 4.26 (d) 8.85
  4. 4.Which is the smallest: 0.027, 0.86, 0.8, 0.736? (a) 0.027 (b) 0.86 (c) 0.8 (d) 0.736
  5. 5.Which is the greatest: 0.3, 0.032, 0.38, 0.263? (a) 0.3 (b) 0.032 (c) 0.38 (d) 0.263
  6. 6.7.59 + 4.8 = ? (a) 12.39 (b) 12.29 (c) 12.49 (d) 8.07
  7. 7.What is the value of the digit 1 in 23.185? (a) 0.001 (b) 0.01 (c) 1 (d) 0.1
  8. 8.4.47 + 6.3 = ? (a) 10.87 (b) 10.77 (c) 10.67 (d) 5.1
  9. 9.Which is the smallest: 0.153, 0.26, 0.2, 0.048? (a) 0.153 (b) 0.26 (c) 0.2 (d) 0.048
  10. 10.2.09 + 7.2 = ? (a) 9.19 (b) 9.29 (c) 2.81 (d) 9.39
  11. 11.What is the value of the digit 3 in 39.514? (a) 0.03 (b) 0.3 (c) 30 (d) 3
  12. 12.Which is the smallest: 0.472, 0.5, 0.091, 0.55? (a) 0.472 (b) 0.5 (c) 0.091 (d) 0.55
  13. 13.Which is the smallest: 0.38, 0.012, 0.288, 0.3? (a) 0.38 (b) 0.012 (c) 0.288 (d) 0.3
  14. 14.6.21 + 6.2 = ? (a) 12.31 (b) 12.51 (c) 12.41 (d) 6.83
  15. 15.2.93 + 3.1 = ? (a) 5.93 (b) 3.24 (c) 6.13 (d) 6.03
  16. 16.5.83 + 3.7 = ? (a) 9.43 (b) 9.63 (c) 6.2 (d) 9.53
  17. 17.What is the value of the digit 7 in 49.371? (a) 0.07 (b) 0.007 (c) 0.7 (d) 7
  18. 18.What is the value of the digit 2 in 92.374? (a) 0.02 (b) 20 (c) 0.2 (d) 2
  19. 19.4.95 + 5.1 = ? (a) 9.95 (b) 10.15 (c) 5.46 (d) 10.05
  20. 20.Which is the greatest: 0.7, 0.647, 0.067, 0.79? (a) 0.7 (b) 0.647 (c) 0.067 (d) 0.79
  21. 21.Which is the greatest: 0.123, 0.21, 0.2, 0.093? (a) 0.123 (b) 0.21 (c) 0.2 (d) 0.093
  22. 22.5.66 + 8.2 = ? (a) 6.48 (b) 13.76 (c) 13.86 (d) 13.96
  23. 23.What is the value of the digit 1 in 27.316? (a) 1 (b) 0.001 (c) 0.01 (d) 0.1
  24. 24.3.97 + 2.5 = ? (a) 4.22 (b) 6.37 (c) 6.57 (d) 6.47
  25. 25.Which is the greatest: 0.5, 0.026, 0.421, 0.51? (a) 0.5 (b) 0.026 (c) 0.421 (d) 0.51
  26. 26.What is the value of the digit 8 in 76.584? (a) 8 (b) 0.8 (c) 0.008 (d) 0.08
  27. 27.4.15 + 7.7 = ? (a) 11.85 (b) 4.92 (c) 11.75 (d) 11.95
  28. 28.Which is the greatest: 0.039, 0.3, 0.219, 0.39? (a) 0.039 (b) 0.3 (c) 0.219 (d) 0.39
  29. 29.4.49 + 4.1 = ? (a) 8.49 (b) 8.69 (c) 4.9 (d) 8.59
  30. 30.What is the value of the digit 1 in 51.634? (a) 0.01 (b) 10 (c) 0.1 (d) 1
  31. 31.What is the value of the digit 2 in 76.124? (a) 2 (b) 0.002 (c) 0.02 (d) 0.2
  32. 32.Which is the greatest: 0.022, 0.4, 0.42, 0.347? (a) 0.022 (b) 0.4 (c) 0.42 (d) 0.347
  33. 33.What is the value of the digit 5 in 53.284? (a) 50 (b) 5 (c) 0.05 (d) 0.5
  34. 34.Which is the smallest: 0.79, 0.038, 0.7, 0.685? (a) 0.79 (b) 0.038 (c) 0.7 (d) 0.685
  35. 35.5.67 + 8.6 = ? (a) 6.53 (b) 14.37 (c) 14.17 (d) 14.27
  36. 36.What is the value of the digit 5 in 97.145? (a) 5 (b) 0.05 (c) 0.005 (d) 0.5
  37. 37.Which is the smallest: 0.55, 0.411, 0.5, 0.076? (a) 0.55 (b) 0.411 (c) 0.5 (d) 0.076
  38. 38.1.29 + 3.1 = ? (a) 4.29 (b) 1.6 (c) 4.49 (d) 4.39
  39. 39.Which is the smallest: 0.85, 0.8, 0.037, 0.768? (a) 0.85 (b) 0.8 (c) 0.037 (d) 0.768
  40. 40.Which is the greatest: 0.272, 0.34, 0.055, 0.3? (a) 0.272 (b) 0.34 (c) 0.055 (d) 0.3

Answer key

  1. 16.62
  2. 0.045
  3. 8.85
  4. 0.027
  5. 0.38
  6. 12.39
  7. 0.1
  8. 10.77
  9. 0.048
  10. 9.29
  11. 30
  12. 0.091
  13. 0.012
  14. 12.41
  15. 6.03
  16. 9.53
  17. 0.07
  18. 2
  19. 10.05
  20. 0.79
  21. 0.21
  22. 13.86
  23. 0.01
  24. 6.47
  25. 0.51
  26. 0.08
  27. 11.85
  28. 0.39
  29. 8.59
  30. 1
  31. 0.02
  32. 0.42
  33. 50
  34. 0.038
  35. 14.27
  36. 0.005
  37. 0.076
  38. 4.39
  39. 0.037
  40. 0.34

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