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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 326 · 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. 1.1.34 + 7.5 = ? (a) 8.74 (b) 8.84 (c) 2.09 (d) 8.94
  2. 2.What is the value of the digit 2 in 25.748? (a) 2 (b) 0.2 (c) 20 (d) 0.02
  3. 3.Which is the greatest: 0.035, 0.72, 0.624, 0.7? (a) 0.035 (b) 0.72 (c) 0.624 (d) 0.7
  4. 4.What is the value of the digit 7 in 86.715? (a) 7 (b) 0.007 (c) 0.07 (d) 0.7
  5. 5.7.38 + 3.2 = ? (a) 10.68 (b) 10.48 (c) 7.7 (d) 10.58
  6. 6.2.67 + 8.8 = ? (a) 3.55 (b) 11.37 (c) 11.57 (d) 11.47
  7. 7.What is the value of the digit 4 in 94.657? (a) 4 (b) 0.4 (c) 0.04 (d) 40
  8. 8.What is the value of the digit 1 in 31.684? (a) 0.01 (b) 0.1 (c) 1 (d) 10
  9. 9.Which is the smallest: 0.046, 0.2, 0.112, 0.29? (a) 0.046 (b) 0.2 (c) 0.112 (d) 0.29
  10. 10.What is the value of the digit 7 in 72.439? (a) 0.07 (b) 70 (c) 0.7 (d) 7
  11. 11.Which is the smallest: 0.095, 0.4, 0.397, 0.49? (a) 0.095 (b) 0.4 (c) 0.397 (d) 0.49
  12. 12.1.77 + 8.1 = ? (a) 9.97 (b) 9.87 (c) 2.58 (d) 9.77
  13. 13.Which is the smallest: 0.49, 0.4, 0.393, 0.038? (a) 0.49 (b) 0.4 (c) 0.393 (d) 0.038
  14. 14.4.88 + 3.6 = ? (a) 8.58 (b) 5.24 (c) 8.38 (d) 8.48
  15. 15.1.51 + 8.6 = ? (a) 10.01 (b) 10.11 (c) 2.37 (d) 10.21
  16. 16.Which is the greatest: 0.243, 0.078, 0.3, 0.35? (a) 0.243 (b) 0.078 (c) 0.3 (d) 0.35
  17. 17.2.99 + 7.6 = ? (a) 10.69 (b) 10.49 (c) 10.59 (d) 3.75
  18. 18.Which is the smallest: 0.81, 0.8, 0.719, 0.046? (a) 0.81 (b) 0.8 (c) 0.719 (d) 0.046
  19. 19.3.27 + 9.6 = ? (a) 12.87 (b) 4.23 (c) 12.97 (d) 12.77
  20. 20.What is the value of the digit 7 in 54.627? (a) 0.7 (b) 7 (c) 0.07 (d) 0.007
  21. 21.Which is the greatest: 0.63, 0.526, 0.095, 0.6? (a) 0.63 (b) 0.526 (c) 0.095 (d) 0.6
  22. 22.2.97 + 1.3 = ? (a) 4.27 (b) 4.37 (c) 3.1 (d) 4.17
  23. 23.Which is the smallest: 0.047, 0.693, 0.7, 0.79? (a) 0.047 (b) 0.693 (c) 0.7 (d) 0.79
  24. 24.1.29 + 5.2 = ? (a) 1.81 (b) 6.39 (c) 6.59 (d) 6.49
  25. 25.Which is the greatest: 0.077, 0.7, 0.631, 0.71? (a) 0.077 (b) 0.7 (c) 0.631 (d) 0.71
  26. 26.Which is the greatest: 0.7, 0.065, 0.73, 0.654? (a) 0.7 (b) 0.065 (c) 0.73 (d) 0.654
  27. 27.Which is the greatest: 0.076, 0.64, 0.6, 0.562? (a) 0.076 (b) 0.64 (c) 0.6 (d) 0.562
  28. 28.5.58 + 8.9 = ? (a) 14.58 (b) 6.47 (c) 14.48 (d) 14.38
  29. 29.Which is the smallest: 0.743, 0.89, 0.025, 0.8? (a) 0.743 (b) 0.89 (c) 0.025 (d) 0.8
  30. 30.1.61 + 3.9 = ? (a) 5.51 (b) 5.41 (c) 5.61 (d) 2
  31. 31.Which is the smallest: 0.58, 0.026, 0.5, 0.417? (a) 0.58 (b) 0.026 (c) 0.5 (d) 0.417
  32. 32.Which is the smallest: 0.276, 0.3, 0.34, 0.072? (a) 0.276 (b) 0.3 (c) 0.34 (d) 0.072
  33. 33.Which is the greatest: 0.24, 0.073, 0.2, 0.115? (a) 0.24 (b) 0.073 (c) 0.2 (d) 0.115
  34. 34.What is the value of the digit 5 in 25.961? (a) 5 (b) 0.5 (c) 50 (d) 0.05
  35. 35.3.04 + 7.4 = ? (a) 10.44 (b) 3.78 (c) 10.34 (d) 10.54
  36. 36.7.94 + 1.5 = ? (a) 9.54 (b) 9.34 (c) 9.44 (d) 8.09
  37. 37.1.04 + 8.2 = ? (a) 1.86 (b) 9.24 (c) 9.14 (d) 9.34
  38. 38.Which is the greatest: 0.075, 0.339, 0.4, 0.45? (a) 0.075 (b) 0.339 (c) 0.4 (d) 0.45
  39. 39.Which is the smallest: 0.3, 0.253, 0.31, 0.034? (a) 0.3 (b) 0.253 (c) 0.31 (d) 0.034
  40. 40.Which is the smallest: 0.2, 0.134, 0.25, 0.057? (a) 0.2 (b) 0.134 (c) 0.25 (d) 0.057

Answer key

  1. 8.84
  2. 20
  3. 0.72
  4. 0.7
  5. 10.58
  6. 11.47
  7. 4
  8. 1
  9. 0.046
  10. 70
  11. 0.095
  12. 9.87
  13. 0.038
  14. 8.48
  15. 10.11
  16. 0.35
  17. 10.59
  18. 0.046
  19. 12.87
  20. 0.007
  21. 0.63
  22. 4.27
  23. 0.047
  24. 6.49
  25. 0.71
  26. 0.73
  27. 0.64
  28. 14.48
  29. 0.025
  30. 5.51
  31. 0.026
  32. 0.072
  33. 0.24
  34. 5
  35. 10.44
  36. 9.44
  37. 9.24
  38. 0.45
  39. 0.034
  40. 0.057

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