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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 484 · 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. 1.1.52 + 4.8 = ? (a) 2 (b) 6.32 (c) 6.22 (d) 6.42
  2. 2.6.18 + 6.1 = ? (a) 12.18 (b) 12.28 (c) 6.79 (d) 12.38
  3. 3.Which is the smallest: 0.083, 0.7, 0.611, 0.72? (a) 0.083 (b) 0.7 (c) 0.611 (d) 0.72
  4. 4.What is the value of the digit 7 in 73.159? (a) 70 (b) 0.7 (c) 7 (d) 0.07
  5. 5.What is the value of the digit 1 in 84.721? (a) 0.01 (b) 1 (c) 0.001 (d) 0.1
  6. 6.What is the value of the digit 5 in 56.438? (a) 50 (b) 0.5 (c) 5 (d) 0.05
  7. 7.6.68 + 5.5 = ? (a) 12.08 (b) 12.28 (c) 7.23 (d) 12.18
  8. 8.Which is the greatest: 0.63, 0.6, 0.516, 0.078? (a) 0.63 (b) 0.6 (c) 0.516 (d) 0.078
  9. 9.2.48 + 1.9 = ? (a) 4.48 (b) 2.67 (c) 4.38 (d) 4.28
  10. 10.2.81 + 6.8 = ? (a) 3.49 (b) 9.61 (c) 9.51 (d) 9.71
  11. 11.Which is the smallest: 0.64, 0.6, 0.081, 0.567? (a) 0.64 (b) 0.6 (c) 0.081 (d) 0.567
  12. 12.What is the value of the digit 2 in 48.132? (a) 0.02 (b) 0.2 (c) 0.002 (d) 2
  13. 13.1.07 + 7.7 = ? (a) 8.67 (b) 1.84 (c) 8.77 (d) 8.87
  14. 14.What is the value of the digit 4 in 24.159? (a) 4 (b) 40 (c) 0.4 (d) 0.04
  15. 15.9.31 + 8.9 = ? (a) 18.31 (b) 18.11 (c) 10.2 (d) 18.21
  16. 16.What is the value of the digit 2 in 75.268? (a) 0.02 (b) 0.002 (c) 0.2 (d) 2
  17. 17.5.44 + 7.3 = ? (a) 6.17 (b) 12.84 (c) 12.64 (d) 12.74
  18. 18.What is the value of the digit 1 in 89.241? (a) 0.01 (b) 1 (c) 0.1 (d) 0.001
  19. 19.Which is the greatest: 0.614, 0.029, 0.71, 0.7? (a) 0.614 (b) 0.029 (c) 0.71 (d) 0.7
  20. 20.6.86 + 5.2 = ? (a) 7.38 (b) 12.16 (c) 11.96 (d) 12.06
  21. 21.Which is the smallest: 0.783, 0.8, 0.057, 0.86? (a) 0.783 (b) 0.8 (c) 0.057 (d) 0.86
  22. 22.1.05 + 2.6 = ? (a) 3.65 (b) 3.75 (c) 3.55 (d) 1.31
  23. 23.What is the value of the digit 1 in 37.159? (a) 0.01 (b) 1 (c) 0.1 (d) 0.001
  24. 24.Which is the greatest: 0.2, 0.075, 0.25, 0.196? (a) 0.2 (b) 0.075 (c) 0.25 (d) 0.196
  25. 25.What is the value of the digit 4 in 61.429? (a) 0.04 (b) 0.004 (c) 4 (d) 0.4
  26. 26.Which is the smallest: 0.199, 0.098, 0.2, 0.25? (a) 0.199 (b) 0.098 (c) 0.2 (d) 0.25
  27. 27.1.61 + 1.6 = ? (a) 3.21 (b) 1.77 (c) 3.31 (d) 3.11
  28. 28.Which is the smallest: 0.369, 0.45, 0.4, 0.086? (a) 0.369 (b) 0.45 (c) 0.4 (d) 0.086
  29. 29.Which is the smallest: 0.7, 0.616, 0.035, 0.71? (a) 0.7 (b) 0.616 (c) 0.035 (d) 0.71
  30. 30.What is the value of the digit 1 in 45.721? (a) 0.01 (b) 0.1 (c) 0.001 (d) 1
  31. 31.What is the value of the digit 7 in 79.458? (a) 0.7 (b) 70 (c) 7 (d) 0.07
  32. 32.4.88 + 7.4 = ? (a) 12.38 (b) 12.28 (c) 12.18 (d) 5.62
  33. 33.7.24 + 8.8 = ? (a) 16.04 (b) 16.14 (c) 15.94 (d) 8.12
  34. 34.Which is the greatest: 0.71, 0.664, 0.7, 0.052? (a) 0.71 (b) 0.664 (c) 0.7 (d) 0.052
  35. 35.Which is the smallest: 0.169, 0.2, 0.24, 0.038? (a) 0.169 (b) 0.2 (c) 0.24 (d) 0.038
  36. 36.What is the value of the digit 2 in 82.569? (a) 0.2 (b) 2 (c) 20 (d) 0.02
  37. 37.1.63 + 3.6 = ? (a) 1.99 (b) 5.23 (c) 5.13 (d) 5.33
  38. 38.1.31 + 3.1 = ? (a) 4.41 (b) 1.62 (c) 4.51 (d) 4.31
  39. 39.7.84 + 8.1 = ? (a) 8.65 (b) 15.84 (c) 16.04 (d) 15.94
  40. 40.3.86 + 2.8 = ? (a) 6.56 (b) 4.14 (c) 6.66 (d) 6.76

Answer key

  1. 6.32
  2. 12.28
  3. 0.083
  4. 70
  5. 0.001
  6. 50
  7. 12.18
  8. 0.63
  9. 4.38
  10. 9.61
  11. 0.081
  12. 0.002
  13. 8.77
  14. 4
  15. 18.21
  16. 0.2
  17. 12.74
  18. 0.001
  19. 0.71
  20. 12.06
  21. 0.057
  22. 3.65
  23. 0.1
  24. 0.25
  25. 0.4
  26. 0.098
  27. 3.21
  28. 0.086
  29. 0.035
  30. 0.001
  31. 70
  32. 12.28
  33. 16.04
  34. 0.71
  35. 0.038
  36. 2
  37. 5.23
  38. 4.41
  39. 15.94
  40. 6.66

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