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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 763 · 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: 0.42, 0.332, 0.045, 0.4? (a) 0.42 (b) 0.332 (c) 0.045 (d) 0.4
  2. 2.7.89 + 7.4 = ? (a) 15.19 (b) 15.29 (c) 15.39 (d) 8.63
  3. 3.What is the value of the digit 1 in 43.591? (a) 0.001 (b) 1 (c) 0.01 (d) 0.1
  4. 4.5.52 + 7.9 = ? (a) 6.31 (b) 13.52 (c) 13.42 (d) 13.32
  5. 5.What is the value of the digit 1 in 29.138? (a) 1 (b) 0.1 (c) 0.001 (d) 0.01
  6. 6.Which is the smallest: 0.83, 0.749, 0.8, 0.046? (a) 0.83 (b) 0.749 (c) 0.8 (d) 0.046
  7. 7.1.86 + 2.8 = ? (a) 4.76 (b) 2.14 (c) 4.56 (d) 4.66
  8. 8.Which is the smallest: 0.2, 0.153, 0.21, 0.024? (a) 0.2 (b) 0.153 (c) 0.21 (d) 0.024
  9. 9.Which is the smallest: 0.012, 0.118, 0.2, 0.23? (a) 0.012 (b) 0.118 (c) 0.2 (d) 0.23
  10. 10.3.81 + 2.8 = ? (a) 6.71 (b) 6.51 (c) 4.09 (d) 6.61
  11. 11.3.53 + 3.5 = ? (a) 7.13 (b) 7.03 (c) 6.93 (d) 3.88
  12. 12.Which is the smallest: 0.48, 0.357, 0.016, 0.4? (a) 0.48 (b) 0.357 (c) 0.016 (d) 0.4
  13. 13.1.46 + 1.6 = ? (a) 3.16 (b) 2.96 (c) 1.62 (d) 3.06
  14. 14.What is the value of the digit 7 in 78.246? (a) 0.7 (b) 0.07 (c) 7 (d) 70
  15. 15.3.31 + 3.6 = ? (a) 7.01 (b) 3.67 (c) 6.81 (d) 6.91
  16. 16.9.29 + 2.9 = ? (a) 12.19 (b) 9.58 (c) 12.29 (d) 12.09
  17. 17.What is the value of the digit 8 in 57.183? (a) 0.008 (b) 8 (c) 0.08 (d) 0.8
  18. 18.4.81 + 2.4 = ? (a) 7.31 (b) 7.11 (c) 7.21 (d) 5.05
  19. 19.Which is the greatest: 0.016, 0.312, 0.4, 0.49? (a) 0.016 (b) 0.312 (c) 0.4 (d) 0.49
  20. 20.4.11 + 8.3 = ? (a) 12.31 (b) 12.41 (c) 4.94 (d) 12.51
  21. 21.What is the value of the digit 9 in 19.628? (a) 9 (b) 90 (c) 0.9 (d) 0.09
  22. 22.1.41 + 7.8 = ? (a) 9.31 (b) 9.21 (c) 2.19 (d) 9.11
  23. 23.5.03 + 1.8 = ? (a) 6.93 (b) 6.73 (c) 6.83 (d) 5.21
  24. 24.Which is the greatest: 0.065, 0.6, 0.532, 0.62? (a) 0.065 (b) 0.6 (c) 0.532 (d) 0.62
  25. 25.Which is the greatest: 0.3, 0.35, 0.091, 0.214? (a) 0.3 (b) 0.35 (c) 0.091 (d) 0.214
  26. 26.What is the value of the digit 8 in 47.821? (a) 0.008 (b) 0.08 (c) 0.8 (d) 8
  27. 27.What is the value of the digit 3 in 62.934? (a) 0.003 (b) 0.03 (c) 3 (d) 0.3
  28. 28.What is the value of the digit 8 in 84.195? (a) 8 (b) 0.08 (c) 0.8 (d) 80
  29. 29.What is the value of the digit 5 in 52.376? (a) 0.5 (b) 50 (c) 5 (d) 0.05
  30. 30.8.12 + 5.1 = ? (a) 13.22 (b) 13.32 (c) 13.12 (d) 8.63
  31. 31.1.28 + 9.1 = ? (a) 10.28 (b) 10.48 (c) 10.38 (d) 2.19
  32. 32.What is the value of the digit 3 in 67.213? (a) 0.3 (b) 0.03 (c) 3 (d) 0.003
  33. 33.1.75 + 4.5 = ? (a) 2.2 (b) 6.35 (c) 6.25 (d) 6.15
  34. 34.Which is the smallest: 0.056, 0.6, 0.68, 0.571? (a) 0.056 (b) 0.6 (c) 0.68 (d) 0.571
  35. 35.7.36 + 1.5 = ? (a) 8.86 (b) 7.51 (c) 8.96 (d) 8.76
  36. 36.What is the value of the digit 4 in 78.214? (a) 4 (b) 0.004 (c) 0.04 (d) 0.4
  37. 37.Which is the smallest: 0.79, 0.071, 0.648, 0.7? (a) 0.79 (b) 0.071 (c) 0.648 (d) 0.7
  38. 38.What is the value of the digit 3 in 53.489? (a) 0.03 (b) 0.3 (c) 3 (d) 30
  39. 39.2.38 + 6.4 = ? (a) 8.68 (b) 3.02 (c) 8.78 (d) 8.88
  40. 40.Which is the smallest: 0.3, 0.296, 0.33, 0.031? (a) 0.3 (b) 0.296 (c) 0.33 (d) 0.031

Answer key

  1. 0.045
  2. 15.29
  3. 0.001
  4. 13.42
  5. 0.1
  6. 0.046
  7. 4.66
  8. 0.024
  9. 0.012
  10. 6.61
  11. 7.03
  12. 0.016
  13. 3.06
  14. 70
  15. 6.91
  16. 12.19
  17. 0.08
  18. 7.21
  19. 0.49
  20. 12.41
  21. 9
  22. 9.21
  23. 6.83
  24. 0.62
  25. 0.35
  26. 0.8
  27. 0.03
  28. 80
  29. 50
  30. 13.22
  31. 10.38
  32. 0.003
  33. 6.25
  34. 0.056
  35. 8.86
  36. 0.004
  37. 0.071
  38. 3
  39. 8.78
  40. 0.031

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