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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 649 · 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. 1.1.41 + 2.4 = ? (a) 3.81 (b) 1.65 (c) 3.71 (d) 3.91
  2. 2.3.03 + 4.7 = ? (a) 3.5 (b) 7.83 (c) 7.63 (d) 7.73
  3. 3.3.98 + 8.3 = ? (a) 12.18 (b) 4.81 (c) 12.28 (d) 12.38
  4. 4.What is the value of the digit 1 in 16.248? (a) 0.1 (b) 0.01 (c) 1 (d) 10
  5. 5.1.92 + 5.1 = ? (a) 7.12 (b) 2.43 (c) 6.92 (d) 7.02
  6. 6.What is the value of the digit 8 in 68.439? (a) 8 (b) 80 (c) 0.08 (d) 0.8
  7. 7.Which is the smallest: 0.59, 0.069, 0.461, 0.5? (a) 0.59 (b) 0.069 (c) 0.461 (d) 0.5
  8. 8.6.15 + 1.9 = ? (a) 8.05 (b) 6.34 (c) 8.15 (d) 7.95
  9. 9.2.54 + 3.1 = ? (a) 5.74 (b) 5.64 (c) 5.54 (d) 2.85
  10. 10.9.55 + 4.8 = ? (a) 10.03 (b) 14.25 (c) 14.45 (d) 14.35
  11. 11.Which is the greatest: 0.035, 0.344, 0.4, 0.41? (a) 0.035 (b) 0.344 (c) 0.4 (d) 0.41
  12. 12.What is the value of the digit 1 in 65.871? (a) 0.001 (b) 1 (c) 0.1 (d) 0.01
  13. 13.3.76 + 1.4 = ? (a) 5.16 (b) 5.26 (c) 3.9 (d) 5.06
  14. 14.4.62 + 2.8 = ? (a) 7.52 (b) 7.42 (c) 7.32 (d) 4.9
  15. 15.Which is the greatest: 0.499, 0.023, 0.55, 0.5? (a) 0.499 (b) 0.023 (c) 0.55 (d) 0.5
  16. 16.5.22 + 2.8 = ? (a) 8.12 (b) 8.02 (c) 7.92 (d) 5.5
  17. 17.2.13 + 8.3 = ? (a) 10.53 (b) 2.96 (c) 10.33 (d) 10.43
  18. 18.Which is the greatest: 0.612, 0.7, 0.062, 0.73? (a) 0.612 (b) 0.7 (c) 0.062 (d) 0.73
  19. 19.What is the value of the digit 8 in 38.167? (a) 0.08 (b) 80 (c) 8 (d) 0.8
  20. 20.4.26 + 1.1 = ? (a) 5.26 (b) 4.37 (c) 5.36 (d) 5.46
  21. 21.3.33 + 6.8 = ? (a) 4.01 (b) 10.23 (c) 10.13 (d) 10.03
  22. 22.Which is the smallest: 0.8, 0.069, 0.717, 0.83? (a) 0.8 (b) 0.069 (c) 0.717 (d) 0.83
  23. 23.9.78 + 6.7 = ? (a) 16.58 (b) 16.38 (c) 16.48 (d) 10.45
  24. 24.8.61 + 2.1 = ? (a) 8.82 (b) 10.61 (c) 10.71 (d) 10.81
  25. 25.Which is the smallest: 0.482, 0.5, 0.078, 0.51? (a) 0.482 (b) 0.5 (c) 0.078 (d) 0.51
  26. 26.8.63 + 7.1 = ? (a) 15.63 (b) 15.73 (c) 15.83 (d) 9.34
  27. 27.Which is the smallest: 0.52, 0.411, 0.5, 0.031? (a) 0.52 (b) 0.411 (c) 0.5 (d) 0.031
  28. 28.7.41 + 4.7 = ? (a) 7.88 (b) 12.01 (c) 12.11 (d) 12.21
  29. 29.2.47 + 2.8 = ? (a) 5.37 (b) 2.75 (c) 5.27 (d) 5.17
  30. 30.Which is the greatest: 0.34, 0.287, 0.3, 0.056? (a) 0.34 (b) 0.287 (c) 0.3 (d) 0.056
  31. 31.2.06 + 1.5 = ? (a) 3.66 (b) 3.46 (c) 3.56 (d) 2.21
  32. 32.What is the value of the digit 1 in 91.578? (a) 1 (b) 0.1 (c) 10 (d) 0.01
  33. 33.Which is the smallest: 0.8, 0.732, 0.83, 0.086? (a) 0.8 (b) 0.732 (c) 0.83 (d) 0.086
  34. 34.Which is the smallest: 0.024, 0.5, 0.57, 0.439? (a) 0.024 (b) 0.5 (c) 0.57 (d) 0.439
  35. 35.Which is the greatest: 0.27, 0.2, 0.035, 0.113? (a) 0.27 (b) 0.2 (c) 0.035 (d) 0.113
  36. 36.Which is the greatest: 0.092, 0.342, 0.4, 0.48? (a) 0.092 (b) 0.342 (c) 0.4 (d) 0.48
  37. 37.What is the value of the digit 2 in 17.342? (a) 0.002 (b) 0.2 (c) 2 (d) 0.02
  38. 38.Which is the smallest: 0.8, 0.053, 0.86, 0.713? (a) 0.8 (b) 0.053 (c) 0.86 (d) 0.713
  39. 39.What is the value of the digit 6 in 29.654? (a) 0.6 (b) 0.06 (c) 6 (d) 0.006
  40. 40.What is the value of the digit 7 in 47.851? (a) 0.7 (b) 7 (c) 0.07 (d) 70

Answer key

  1. 3.81
  2. 7.73
  3. 12.28
  4. 10
  5. 7.02
  6. 8
  7. 0.069
  8. 8.05
  9. 5.64
  10. 14.35
  11. 0.41
  12. 0.001
  13. 5.16
  14. 7.42
  15. 0.55
  16. 8.02
  17. 10.43
  18. 0.73
  19. 8
  20. 5.36
  21. 10.13
  22. 0.069
  23. 16.48
  24. 10.71
  25. 0.078
  26. 15.73
  27. 0.031
  28. 12.11
  29. 5.27
  30. 0.34
  31. 3.56
  32. 1
  33. 0.086
  34. 0.024
  35. 0.27
  36. 0.48
  37. 0.002
  38. 0.053
  39. 0.6
  40. 7

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