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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 619 · 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: 0.179, 0.094, 0.2, 0.29? (a) 0.179 (b) 0.094 (c) 0.2 (d) 0.29
  2. 2.2.73 + 2.4 = ? (a) 5.03 (b) 5.13 (c) 5.23 (d) 2.97
  3. 3.Which is the greatest: 0.541, 0.61, 0.6, 0.081? (a) 0.541 (b) 0.61 (c) 0.6 (d) 0.081
  4. 4.What is the value of the digit 3 in 35.284? (a) 3 (b) 0.3 (c) 30 (d) 0.03
  5. 5.Which is the greatest: 0.129, 0.23, 0.089, 0.2? (a) 0.129 (b) 0.23 (c) 0.089 (d) 0.2
  6. 6.Which is the smallest: 0.614, 0.77, 0.075, 0.7? (a) 0.614 (b) 0.77 (c) 0.075 (d) 0.7
  7. 7.What is the value of the digit 4 in 61.947? (a) 0.004 (b) 0.4 (c) 4 (d) 0.04
  8. 8.6.58 + 3.8 = ? (a) 10.48 (b) 10.28 (c) 10.38 (d) 6.96
  9. 9.What is the value of the digit 4 in 86.471? (a) 4 (b) 0.04 (c) 0.004 (d) 0.4
  10. 10.What is the value of the digit 3 in 49.386? (a) 0.3 (b) 0.03 (c) 3 (d) 0.003
  11. 11.Which is the greatest: 0.025, 0.767, 0.81, 0.8? (a) 0.025 (b) 0.767 (c) 0.81 (d) 0.8
  12. 12.What is the value of the digit 6 in 13.685? (a) 0.06 (b) 0.6 (c) 6 (d) 0.006
  13. 13.6.05 + 7.4 = ? (a) 13.55 (b) 13.45 (c) 13.35 (d) 6.79
  14. 14.7.93 + 2.8 = ? (a) 10.63 (b) 10.83 (c) 10.73 (d) 8.21
  15. 15.Which is the smallest: 0.073, 0.7, 0.74, 0.693? (a) 0.073 (b) 0.7 (c) 0.74 (d) 0.693
  16. 16.9.32 + 3.2 = ? (a) 12.42 (b) 12.52 (c) 9.64 (d) 12.62
  17. 17.What is the value of the digit 8 in 38.462? (a) 0.08 (b) 8 (c) 80 (d) 0.8
  18. 18.9.51 + 5.9 = ? (a) 15.41 (b) 15.51 (c) 10.1 (d) 15.31
  19. 19.Which is the greatest: 0.738, 0.81, 0.021, 0.8? (a) 0.738 (b) 0.81 (c) 0.021 (d) 0.8
  20. 20.What is the value of the digit 3 in 13.869? (a) 0.3 (b) 3 (c) 0.03 (d) 30
  21. 21.What is the value of the digit 4 in 23.149? (a) 0.004 (b) 0.04 (c) 0.4 (d) 4
  22. 22.Which is the greatest: 0.059, 0.151, 0.2, 0.22? (a) 0.059 (b) 0.151 (c) 0.2 (d) 0.22
  23. 23.What is the value of the digit 2 in 21.937? (a) 0.02 (b) 20 (c) 0.2 (d) 2
  24. 24.2.78 + 7.7 = ? (a) 10.48 (b) 10.38 (c) 3.55 (d) 10.58
  25. 25.8.39 + 7.3 = ? (a) 9.12 (b) 15.69 (c) 15.59 (d) 15.79
  26. 26.What is the value of the digit 4 in 64.957? (a) 40 (b) 0.4 (c) 4 (d) 0.04
  27. 27.What is the value of the digit 6 in 62.183? (a) 6 (b) 0.6 (c) 0.06 (d) 60
  28. 28.Which is the greatest: 0.64, 0.546, 0.098, 0.6? (a) 0.64 (b) 0.546 (c) 0.098 (d) 0.6
  29. 29.Which is the smallest: 0.025, 0.4, 0.311, 0.41? (a) 0.025 (b) 0.4 (c) 0.311 (d) 0.41
  30. 30.5.57 + 6.1 = ? (a) 6.18 (b) 11.67 (c) 11.57 (d) 11.77
  31. 31.What is the value of the digit 2 in 26.387? (a) 0.02 (b) 2 (c) 0.2 (d) 20
  32. 32.Which is the greatest: 0.758, 0.034, 0.83, 0.8? (a) 0.758 (b) 0.034 (c) 0.83 (d) 0.8
  33. 33.Which is the greatest: 0.311, 0.034, 0.41, 0.4? (a) 0.311 (b) 0.034 (c) 0.41 (d) 0.4
  34. 34.8.05 + 2.4 = ? (a) 10.55 (b) 10.45 (c) 8.29 (d) 10.35
  35. 35.3.01 + 1.9 = ? (a) 4.81 (b) 5.01 (c) 3.2 (d) 4.91
  36. 36.7.01 + 6.1 = ? (a) 7.62 (b) 13.21 (c) 13.01 (d) 13.11
  37. 37.Which is the greatest: 0.4, 0.052, 0.41, 0.341? (a) 0.4 (b) 0.052 (c) 0.41 (d) 0.341
  38. 38.3.28 + 5.8 = ? (a) 3.86 (b) 9.08 (c) 9.18 (d) 8.98
  39. 39.Which is the greatest: 0.8, 0.87, 0.791, 0.096? (a) 0.8 (b) 0.87 (c) 0.791 (d) 0.096
  40. 40.What is the value of the digit 5 in 57.926? (a) 5 (b) 0.5 (c) 0.05 (d) 50

Answer key

  1. 0.094
  2. 5.13
  3. 0.61
  4. 30
  5. 0.23
  6. 0.075
  7. 0.04
  8. 10.38
  9. 0.4
  10. 0.3
  11. 0.81
  12. 0.6
  13. 13.45
  14. 10.73
  15. 0.073
  16. 12.52
  17. 8
  18. 15.41
  19. 0.81
  20. 3
  21. 0.04
  22. 0.22
  23. 20
  24. 10.48
  25. 15.69
  26. 4
  27. 60
  28. 0.64
  29. 0.025
  30. 11.67
  31. 20
  32. 0.83
  33. 0.41
  34. 10.45
  35. 4.91
  36. 13.11
  37. 0.41
  38. 9.08
  39. 0.87
  40. 50

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