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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 979 · 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. 1.4.34 + 1.6 = ? (a) 4.5 (b) 5.84 (c) 6.04 (d) 5.94
  2. 2.6.26 + 5.7 = ? (a) 12.06 (b) 6.83 (c) 11.96 (d) 11.86
  3. 3.What is the value of the digit 9 in 13.962? (a) 9 (b) 0.9 (c) 0.009 (d) 0.09
  4. 4.3.81 + 1.9 = ? (a) 5.71 (b) 5.81 (c) 5.61 (d) 4
  5. 5.6.18 + 3.2 = ? (a) 9.48 (b) 9.28 (c) 6.5 (d) 9.38
  6. 6.What is the value of the digit 2 in 82.459? (a) 2 (b) 0.02 (c) 0.2 (d) 20
  7. 7.Which is the greatest: 0.115, 0.22, 0.091, 0.2? (a) 0.115 (b) 0.22 (c) 0.091 (d) 0.2
  8. 8.What is the value of the digit 1 in 61.935? (a) 10 (b) 0.01 (c) 0.1 (d) 1
  9. 9.4.71 + 7.6 = ? (a) 5.47 (b) 12.31 (c) 12.41 (d) 12.21
  10. 10.2.01 + 2.1 = ? (a) 4.01 (b) 4.11 (c) 2.22 (d) 4.21
  11. 11.What is the value of the digit 9 in 39.546? (a) 0.09 (b) 0.9 (c) 9 (d) 90
  12. 12.Which is the greatest: 0.69, 0.531, 0.6, 0.047? (a) 0.69 (b) 0.531 (c) 0.6 (d) 0.047
  13. 13.What is the value of the digit 2 in 28.974? (a) 0.02 (b) 20 (c) 2 (d) 0.2
  14. 14.6.82 + 7.4 = ? (a) 14.32 (b) 14.12 (c) 14.22 (d) 7.56
  15. 15.Which is the greatest: 0.4, 0.012, 0.326, 0.42? (a) 0.4 (b) 0.012 (c) 0.326 (d) 0.42
  16. 16.What is the value of the digit 7 in 37.165? (a) 0.07 (b) 7 (c) 70 (d) 0.7
  17. 17.8.85 + 3.2 = ? (a) 12.05 (b) 11.95 (c) 12.15 (d) 9.17
  18. 18.4.06 + 9.4 = ? (a) 13.56 (b) 13.46 (c) 13.36 (d) 5
  19. 19.4.61 + 1.9 = ? (a) 6.41 (b) 6.61 (c) 6.51 (d) 4.8
  20. 20.What is the value of the digit 7 in 23.475? (a) 0.07 (b) 7 (c) 0.007 (d) 0.7
  21. 21.What is the value of the digit 7 in 97.821? (a) 7 (b) 0.7 (c) 70 (d) 0.07
  22. 22.Which is the smallest: 0.148, 0.23, 0.2, 0.026? (a) 0.148 (b) 0.23 (c) 0.2 (d) 0.026
  23. 23.3.49 + 5.2 = ? (a) 8.69 (b) 8.59 (c) 4.01 (d) 8.79
  24. 24.Which is the greatest: 0.087, 0.321, 0.4, 0.43? (a) 0.087 (b) 0.321 (c) 0.4 (d) 0.43
  25. 25.8.68 + 8.2 = ? (a) 9.5 (b) 16.78 (c) 16.98 (d) 16.88
  26. 26.What is the value of the digit 8 in 59.718? (a) 0.8 (b) 8 (c) 0.008 (d) 0.08
  27. 27.7.93 + 6.3 = ? (a) 8.56 (b) 14.23 (c) 14.33 (d) 14.13
  28. 28.1.19 + 2.6 = ? (a) 1.45 (b) 3.79 (c) 3.69 (d) 3.89
  29. 29.6.27 + 2.5 = ? (a) 6.52 (b) 8.67 (c) 8.87 (d) 8.77
  30. 30.Which is the smallest: 0.46, 0.353, 0.051, 0.4? (a) 0.46 (b) 0.353 (c) 0.051 (d) 0.4
  31. 31.8.65 + 5.8 = ? (a) 14.55 (b) 9.23 (c) 14.45 (d) 14.35
  32. 32.Which is the greatest: 0.036, 0.136, 0.29, 0.2? (a) 0.036 (b) 0.136 (c) 0.29 (d) 0.2
  33. 33.Which is the smallest: 0.28, 0.153, 0.2, 0.071? (a) 0.28 (b) 0.153 (c) 0.2 (d) 0.071
  34. 34.9.57 + 9.6 = ? (a) 10.53 (b) 19.17 (c) 19.27 (d) 19.07
  35. 35.9.28 + 2.9 = ? (a) 9.57 (b) 12.28 (c) 12.18 (d) 12.08
  36. 36.What is the value of the digit 3 in 13.825? (a) 30 (b) 3 (c) 0.3 (d) 0.03
  37. 37.What is the value of the digit 8 in 24.389? (a) 0.008 (b) 8 (c) 0.08 (d) 0.8
  38. 38.Which is the greatest: 0.23, 0.132, 0.2, 0.079? (a) 0.23 (b) 0.132 (c) 0.2 (d) 0.079
  39. 39.7.97 + 1.5 = ? (a) 9.57 (b) 8.12 (c) 9.47 (d) 9.37
  40. 40.Which is the smallest: 0.31, 0.073, 0.292, 0.3? (a) 0.31 (b) 0.073 (c) 0.292 (d) 0.3

Answer key

  1. 5.94
  2. 11.96
  3. 0.9
  4. 5.71
  5. 9.38
  6. 2
  7. 0.22
  8. 1
  9. 12.31
  10. 4.11
  11. 9
  12. 0.69
  13. 20
  14. 14.22
  15. 0.42
  16. 7
  17. 12.05
  18. 13.46
  19. 6.51
  20. 0.07
  21. 7
  22. 0.026
  23. 8.69
  24. 0.43
  25. 16.88
  26. 0.008
  27. 14.23
  28. 3.79
  29. 8.77
  30. 0.051
  31. 14.45
  32. 0.29
  33. 0.071
  34. 19.17
  35. 12.18
  36. 3
  37. 0.08
  38. 0.23
  39. 9.47
  40. 0.073

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