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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 892 · 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.Which is the smallest: 0.82, 0.8, 0.026, 0.758? (a) 0.82 (b) 0.8 (c) 0.026 (d) 0.758
  2. 2.What is the value of the digit 3 in 42.318? (a) 0.003 (b) 0.3 (c) 3 (d) 0.03
  3. 3.What is the value of the digit 9 in 98.173? (a) 0.9 (b) 90 (c) 0.09 (d) 9
  4. 4.Which is the greatest: 0.51, 0.5, 0.092, 0.492? (a) 0.51 (b) 0.5 (c) 0.092 (d) 0.492
  5. 5.Which is the greatest: 0.126, 0.022, 0.2, 0.28? (a) 0.126 (b) 0.022 (c) 0.2 (d) 0.28
  6. 6.Which is the greatest: 0.6, 0.69, 0.017, 0.534? (a) 0.6 (b) 0.69 (c) 0.017 (d) 0.534
  7. 7.6.57 + 8.6 = ? (a) 15.27 (b) 7.43 (c) 15.17 (d) 15.07
  8. 8.9.53 + 7.3 = ? (a) 16.93 (b) 16.83 (c) 10.26 (d) 16.73
  9. 9.2.56 + 9.3 = ? (a) 11.96 (b) 11.76 (c) 3.49 (d) 11.86
  10. 10.Which is the smallest: 0.5, 0.496, 0.019, 0.57? (a) 0.5 (b) 0.496 (c) 0.019 (d) 0.57
  11. 11.Which is the greatest: 0.6, 0.081, 0.62, 0.518? (a) 0.6 (b) 0.081 (c) 0.62 (d) 0.518
  12. 12.Which is the greatest: 0.177, 0.29, 0.2, 0.043? (a) 0.177 (b) 0.29 (c) 0.2 (d) 0.043
  13. 13.1.81 + 6.2 = ? (a) 2.43 (b) 7.91 (c) 8.11 (d) 8.01
  14. 14.Which is the greatest: 0.162, 0.25, 0.2, 0.026? (a) 0.162 (b) 0.25 (c) 0.2 (d) 0.026
  15. 15.Which is the greatest: 0.033, 0.3, 0.33, 0.273? (a) 0.033 (b) 0.3 (c) 0.33 (d) 0.273
  16. 16.4.08 + 7.2 = ? (a) 11.28 (b) 11.38 (c) 4.8 (d) 11.18
  17. 17.Which is the greatest: 0.278, 0.32, 0.058, 0.3? (a) 0.278 (b) 0.32 (c) 0.058 (d) 0.3
  18. 18.Which is the smallest: 0.4, 0.353, 0.015, 0.47? (a) 0.4 (b) 0.353 (c) 0.015 (d) 0.47
  19. 19.2.81 + 4.7 = ? (a) 7.41 (b) 3.28 (c) 7.51 (d) 7.61
  20. 20.7.93 + 9.5 = ? (a) 17.43 (b) 8.88 (c) 17.33 (d) 17.53
  21. 21.5.08 + 2.4 = ? (a) 7.48 (b) 5.32 (c) 7.58 (d) 7.38
  22. 22.What is the value of the digit 2 in 25.814? (a) 0.2 (b) 0.02 (c) 2 (d) 20
  23. 23.3.46 + 9.8 = ? (a) 13.36 (b) 4.44 (c) 13.26 (d) 13.16
  24. 24.4.72 + 6.4 = ? (a) 11.12 (b) 11.02 (c) 5.36 (d) 11.22
  25. 25.5.05 + 7.4 = ? (a) 12.55 (b) 12.35 (c) 12.45 (d) 5.79
  26. 26.Which is the smallest: 0.37, 0.085, 0.3, 0.251? (a) 0.37 (b) 0.085 (c) 0.3 (d) 0.251
  27. 27.8.52 + 1.1 = ? (a) 9.72 (b) 9.52 (c) 8.63 (d) 9.62
  28. 28.Which is the smallest: 0.658, 0.76, 0.092, 0.7? (a) 0.658 (b) 0.76 (c) 0.092 (d) 0.7
  29. 29.What is the value of the digit 8 in 83.942? (a) 0.8 (b) 8 (c) 80 (d) 0.08
  30. 30.What is the value of the digit 2 in 38.725? (a) 0.002 (b) 2 (c) 0.2 (d) 0.02
  31. 31.Which is the greatest: 0.37, 0.074, 0.247, 0.3? (a) 0.37 (b) 0.074 (c) 0.247 (d) 0.3
  32. 32.5.87 + 5.7 = ? (a) 11.47 (b) 11.67 (c) 6.44 (d) 11.57
  33. 33.1.41 + 5.4 = ? (a) 6.91 (b) 6.81 (c) 6.71 (d) 1.95
  34. 34.What is the value of the digit 8 in 39.648? (a) 0.8 (b) 8 (c) 0.08 (d) 0.008
  35. 35.3.81 + 5.5 = ? (a) 4.36 (b) 9.41 (c) 9.21 (d) 9.31
  36. 36.5.21 + 9.5 = ? (a) 6.16 (b) 14.71 (c) 14.61 (d) 14.81
  37. 37.Which is the greatest: 0.36, 0.3, 0.289, 0.074? (a) 0.36 (b) 0.3 (c) 0.289 (d) 0.074
  38. 38.1.54 + 4.1 = ? (a) 5.74 (b) 1.95 (c) 5.64 (d) 5.54
  39. 39.What is the value of the digit 2 in 52.781? (a) 20 (b) 0.02 (c) 2 (d) 0.2
  40. 40.Which is the greatest: 0.086, 0.129, 0.2, 0.28? (a) 0.086 (b) 0.129 (c) 0.2 (d) 0.28

Answer key

  1. 0.026
  2. 0.3
  3. 90
  4. 0.51
  5. 0.28
  6. 0.69
  7. 15.17
  8. 16.83
  9. 11.86
  10. 0.019
  11. 0.62
  12. 0.29
  13. 8.01
  14. 0.25
  15. 0.33
  16. 11.28
  17. 0.32
  18. 0.015
  19. 7.51
  20. 17.43
  21. 7.48
  22. 20
  23. 13.26
  24. 11.12
  25. 12.45
  26. 0.085
  27. 9.62
  28. 0.092
  29. 80
  30. 0.02
  31. 0.37
  32. 11.57
  33. 6.81
  34. 0.008
  35. 9.31
  36. 14.71
  37. 0.36
  38. 5.64
  39. 2
  40. 0.28

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