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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 854 · 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. 1.2.66 + 9.9 = ? (a) 12.46 (b) 3.65 (c) 12.66 (d) 12.56
  2. 2.Which is the greatest: 0.088, 0.619, 0.78, 0.7? (a) 0.088 (b) 0.619 (c) 0.78 (d) 0.7
  3. 3.What is the value of the digit 5 in 65.123? (a) 50 (b) 0.05 (c) 0.5 (d) 5
  4. 4.What is the value of the digit 1 in 74.123? (a) 0.01 (b) 0.1 (c) 0.001 (d) 1
  5. 5.7.71 + 6.4 = ? (a) 14.01 (b) 14.11 (c) 8.35 (d) 14.21
  6. 6.3.19 + 9.1 = ? (a) 4.1 (b) 12.39 (c) 12.19 (d) 12.29
  7. 7.1.18 + 4.4 = ? (a) 5.48 (b) 5.68 (c) 1.62 (d) 5.58
  8. 8.8.87 + 9.5 = ? (a) 18.47 (b) 18.27 (c) 9.82 (d) 18.37
  9. 9.7.28 + 4.4 = ? (a) 11.68 (b) 7.72 (c) 11.58 (d) 11.78
  10. 10.What is the value of the digit 4 in 74.891? (a) 40 (b) 4 (c) 0.04 (d) 0.4
  11. 11.Which is the greatest: 0.048, 0.527, 0.6, 0.62? (a) 0.048 (b) 0.527 (c) 0.6 (d) 0.62
  12. 12.Which is the greatest: 0.056, 0.351, 0.41, 0.4? (a) 0.056 (b) 0.351 (c) 0.41 (d) 0.4
  13. 13.5.08 + 5.3 = ? (a) 10.28 (b) 5.61 (c) 10.48 (d) 10.38
  14. 14.2.32 + 8.1 = ? (a) 10.52 (b) 3.13 (c) 10.32 (d) 10.42
  15. 15.What is the value of the digit 2 in 38.612? (a) 0.02 (b) 0.2 (c) 2 (d) 0.002
  16. 16.What is the value of the digit 3 in 31.549? (a) 3 (b) 0.03 (c) 30 (d) 0.3
  17. 17.What is the value of the digit 9 in 67.193? (a) 9 (b) 0.09 (c) 0.009 (d) 0.9
  18. 18.5.07 + 3.6 = ? (a) 8.57 (b) 8.67 (c) 8.77 (d) 5.43
  19. 19.Which is the greatest: 0.82, 0.716, 0.014, 0.8? (a) 0.82 (b) 0.716 (c) 0.014 (d) 0.8
  20. 20.What is the value of the digit 3 in 93.815? (a) 0.3 (b) 3 (c) 30 (d) 0.03
  21. 21.Which is the smallest: 0.092, 0.71, 0.649, 0.7? (a) 0.092 (b) 0.71 (c) 0.649 (d) 0.7
  22. 22.What is the value of the digit 2 in 72.641? (a) 0.02 (b) 20 (c) 2 (d) 0.2
  23. 23.Which is the greatest: 0.593, 0.66, 0.026, 0.6? (a) 0.593 (b) 0.66 (c) 0.026 (d) 0.6
  24. 24.Which is the smallest: 0.2, 0.25, 0.096, 0.176? (a) 0.2 (b) 0.25 (c) 0.096 (d) 0.176
  25. 25.Which is the greatest: 0.438, 0.55, 0.012, 0.5? (a) 0.438 (b) 0.55 (c) 0.012 (d) 0.5
  26. 26.8.99 + 7.3 = ? (a) 16.19 (b) 16.29 (c) 9.72 (d) 16.39
  27. 27.What is the value of the digit 2 in 72.836? (a) 0.02 (b) 2 (c) 20 (d) 0.2
  28. 28.What is the value of the digit 4 in 43.896? (a) 0.04 (b) 4 (c) 0.4 (d) 40
  29. 29.Which is the greatest: 0.74, 0.612, 0.7, 0.049? (a) 0.74 (b) 0.612 (c) 0.7 (d) 0.049
  30. 30.1.43 + 5.6 = ? (a) 1.99 (b) 6.93 (c) 7.03 (d) 7.13
  31. 31.Which is the greatest: 0.2, 0.118, 0.26, 0.041? (a) 0.2 (b) 0.118 (c) 0.26 (d) 0.041
  32. 32.Which is the greatest: 0.24, 0.2, 0.088, 0.143? (a) 0.24 (b) 0.2 (c) 0.088 (d) 0.143
  33. 33.3.92 + 6.4 = ? (a) 10.32 (b) 4.56 (c) 10.22 (d) 10.42
  34. 34.3.02 + 4.5 = ? (a) 7.42 (b) 7.52 (c) 7.62 (d) 3.47
  35. 35.What is the value of the digit 1 in 19.453? (a) 1 (b) 0.1 (c) 10 (d) 0.01
  36. 36.What is the value of the digit 4 in 42.576? (a) 4 (b) 0.04 (c) 0.4 (d) 40
  37. 37.Which is the smallest: 0.639, 0.76, 0.7, 0.046? (a) 0.639 (b) 0.76 (c) 0.7 (d) 0.046
  38. 38.What is the value of the digit 4 in 34.612? (a) 0.4 (b) 40 (c) 0.04 (d) 4
  39. 39.Which is the greatest: 0.231, 0.019, 0.3, 0.38? (a) 0.231 (b) 0.019 (c) 0.3 (d) 0.38
  40. 40.Which is the smallest: 0.044, 0.139, 0.2, 0.21? (a) 0.044 (b) 0.139 (c) 0.2 (d) 0.21

Answer key

  1. 12.56
  2. 0.78
  3. 5
  4. 0.1
  5. 14.11
  6. 12.29
  7. 5.58
  8. 18.37
  9. 11.68
  10. 4
  11. 0.62
  12. 0.41
  13. 10.38
  14. 10.42
  15. 0.002
  16. 30
  17. 0.09
  18. 8.67
  19. 0.82
  20. 3
  21. 0.092
  22. 2
  23. 0.66
  24. 0.096
  25. 0.55
  26. 16.29
  27. 2
  28. 40
  29. 0.74
  30. 7.03
  31. 0.26
  32. 0.24
  33. 10.32
  34. 7.52
  35. 10
  36. 40
  37. 0.046
  38. 4
  39. 0.38
  40. 0.044

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