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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 692 · 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. 1.9.09 + 1.9 = ? (a) 10.99 (b) 11.09 (c) 9.28 (d) 10.89
  2. 2.1.62 + 7.4 = ? (a) 9.12 (b) 8.92 (c) 2.36 (d) 9.02
  3. 3.4.27 + 3.1 = ? (a) 7.47 (b) 7.37 (c) 4.58 (d) 7.27
  4. 4.Which is the smallest: 0.078, 0.712, 0.88, 0.8? (a) 0.078 (b) 0.712 (c) 0.88 (d) 0.8
  5. 5.Which is the smallest: 0.7, 0.79, 0.023, 0.637? (a) 0.7 (b) 0.79 (c) 0.023 (d) 0.637
  6. 6.3.53 + 6.3 = ? (a) 9.93 (b) 9.83 (c) 4.16 (d) 9.73
  7. 7.2.04 + 2.4 = ? (a) 2.28 (b) 4.34 (c) 4.54 (d) 4.44
  8. 8.Which is the smallest: 0.89, 0.033, 0.799, 0.8? (a) 0.89 (b) 0.033 (c) 0.799 (d) 0.8
  9. 9.What is the value of the digit 1 in 18.279? (a) 1 (b) 0.01 (c) 10 (d) 0.1
  10. 10.2.08 + 3.4 = ? (a) 2.42 (b) 5.38 (c) 5.58 (d) 5.48
  11. 11.Which is the smallest: 0.044, 0.3, 0.229, 0.39? (a) 0.044 (b) 0.3 (c) 0.229 (d) 0.39
  12. 12.Which is the greatest: 0.085, 0.45, 0.328, 0.4? (a) 0.085 (b) 0.45 (c) 0.328 (d) 0.4
  13. 13.What is the value of the digit 9 in 29.673? (a) 0.09 (b) 90 (c) 0.9 (d) 9
  14. 14.5.81 + 9.3 = ? (a) 15.11 (b) 6.74 (c) 15.01 (d) 15.21
  15. 15.6.05 + 6.2 = ? (a) 12.35 (b) 12.15 (c) 6.67 (d) 12.25
  16. 16.What is the value of the digit 4 in 19.487? (a) 0.04 (b) 0.4 (c) 0.004 (d) 4
  17. 17.What is the value of the digit 7 in 28.367? (a) 0.07 (b) 0.7 (c) 7 (d) 0.007
  18. 18.What is the value of the digit 7 in 21.879? (a) 0.07 (b) 7 (c) 0.007 (d) 0.7
  19. 19.Which is the smallest: 0.7, 0.72, 0.622, 0.022? (a) 0.7 (b) 0.72 (c) 0.622 (d) 0.022
  20. 20.Which is the smallest: 0.692, 0.73, 0.034, 0.7? (a) 0.692 (b) 0.73 (c) 0.034 (d) 0.7
  21. 21.What is the value of the digit 8 in 94.281? (a) 0.008 (b) 0.8 (c) 8 (d) 0.08
  22. 22.Which is the smallest: 0.7, 0.059, 0.73, 0.627? (a) 0.7 (b) 0.059 (c) 0.73 (d) 0.627
  23. 23.4.22 + 1.8 = ? (a) 4.4 (b) 6.12 (c) 6.02 (d) 5.92
  24. 24.5.41 + 6.6 = ? (a) 11.91 (b) 12.01 (c) 12.11 (d) 6.07
  25. 25.6.99 + 8.6 = ? (a) 15.69 (b) 15.49 (c) 15.59 (d) 7.85
  26. 26.Which is the greatest: 0.61, 0.515, 0.087, 0.6? (a) 0.61 (b) 0.515 (c) 0.087 (d) 0.6
  27. 27.6.31 + 2.6 = ? (a) 8.81 (b) 8.91 (c) 9.01 (d) 6.57
  28. 28.Which is the smallest: 0.21, 0.2, 0.138, 0.016? (a) 0.21 (b) 0.2 (c) 0.138 (d) 0.016
  29. 29.Which is the greatest: 0.82, 0.763, 0.075, 0.8? (a) 0.82 (b) 0.763 (c) 0.075 (d) 0.8
  30. 30.Which is the smallest: 0.584, 0.62, 0.6, 0.049? (a) 0.584 (b) 0.62 (c) 0.6 (d) 0.049
  31. 31.Which is the smallest: 0.043, 0.43, 0.316, 0.4? (a) 0.043 (b) 0.43 (c) 0.316 (d) 0.4
  32. 32.4.37 + 9.7 = ? (a) 14.17 (b) 5.34 (c) 13.97 (d) 14.07
  33. 33.What is the value of the digit 9 in 67.982? (a) 9 (b) 0.09 (c) 0.009 (d) 0.9
  34. 34.4.77 + 6.8 = ? (a) 5.45 (b) 11.67 (c) 11.47 (d) 11.57
  35. 35.What is the value of the digit 7 in 79.325? (a) 0.07 (b) 0.7 (c) 70 (d) 7
  36. 36.What is the value of the digit 7 in 56.973? (a) 0.007 (b) 0.07 (c) 0.7 (d) 7
  37. 37.6.02 + 2.8 = ? (a) 8.82 (b) 6.3 (c) 8.92 (d) 8.72
  38. 38.Which is the greatest: 0.164, 0.21, 0.089, 0.2? (a) 0.164 (b) 0.21 (c) 0.089 (d) 0.2
  39. 39.2.65 + 9.6 = ? (a) 12.15 (b) 12.25 (c) 12.35 (d) 3.61
  40. 40.Which is the smallest: 0.249, 0.31, 0.062, 0.3? (a) 0.249 (b) 0.31 (c) 0.062 (d) 0.3

Answer key

  1. 10.99
  2. 9.02
  3. 7.37
  4. 0.078
  5. 0.023
  6. 9.83
  7. 4.44
  8. 0.033
  9. 10
  10. 5.48
  11. 0.044
  12. 0.45
  13. 9
  14. 15.11
  15. 12.25
  16. 0.4
  17. 0.007
  18. 0.07
  19. 0.022
  20. 0.034
  21. 0.08
  22. 0.059
  23. 6.02
  24. 12.01
  25. 15.59
  26. 0.61
  27. 8.91
  28. 0.016
  29. 0.82
  30. 0.049
  31. 0.043
  32. 14.07
  33. 0.9
  34. 11.57
  35. 70
  36. 0.07
  37. 8.82
  38. 0.21
  39. 12.25
  40. 0.062

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