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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 776 · 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. 1.3.01 + 2.5 = ? (a) 5.61 (b) 5.51 (c) 5.41 (d) 3.26
  2. 2.What is the value of the digit 7 in 31.794? (a) 0.007 (b) 7 (c) 0.07 (d) 0.7
  3. 3.5.53 + 7.1 = ? (a) 12.53 (b) 12.73 (c) 6.24 (d) 12.63
  4. 4.What is the value of the digit 8 in 24.386? (a) 0.8 (b) 0.008 (c) 8 (d) 0.08
  5. 5.What is the value of the digit 2 in 24.356? (a) 2 (b) 0.02 (c) 0.2 (d) 20
  6. 6.Which is the greatest: 0.258, 0.3, 0.32, 0.031? (a) 0.258 (b) 0.3 (c) 0.32 (d) 0.031
  7. 7.Which is the smallest: 0.098, 0.715, 0.8, 0.87? (a) 0.098 (b) 0.715 (c) 0.8 (d) 0.87
  8. 8.Which is the greatest: 0.22, 0.079, 0.2, 0.138? (a) 0.22 (b) 0.079 (c) 0.2 (d) 0.138
  9. 9.Which is the smallest: 0.099, 0.8, 0.81, 0.795? (a) 0.099 (b) 0.8 (c) 0.81 (d) 0.795
  10. 10.What is the value of the digit 3 in 98.312? (a) 0.03 (b) 3 (c) 0.003 (d) 0.3
  11. 11.What is the value of the digit 9 in 42.916? (a) 0.009 (b) 0.09 (c) 9 (d) 0.9
  12. 12.Which is the greatest: 0.153, 0.2, 0.022, 0.23? (a) 0.153 (b) 0.2 (c) 0.022 (d) 0.23
  13. 13.Which is the smallest: 0.448, 0.5, 0.025, 0.52? (a) 0.448 (b) 0.5 (c) 0.025 (d) 0.52
  14. 14.5.83 + 9.8 = ? (a) 15.73 (b) 15.53 (c) 6.81 (d) 15.63
  15. 15.What is the value of the digit 8 in 14.862? (a) 0.8 (b) 8 (c) 0.008 (d) 0.08
  16. 16.1.67 + 1.5 = ? (a) 3.17 (b) 3.07 (c) 1.82 (d) 3.27
  17. 17.What is the value of the digit 8 in 38.627? (a) 8 (b) 0.8 (c) 0.08 (d) 80
  18. 18.3.76 + 3.1 = ? (a) 4.07 (b) 6.96 (c) 6.86 (d) 6.76
  19. 19.8.19 + 3.8 = ? (a) 11.89 (b) 8.57 (c) 11.99 (d) 12.09
  20. 20.What is the value of the digit 2 in 42.365? (a) 2 (b) 20 (c) 0.2 (d) 0.02
  21. 21.What is the value of the digit 6 in 28.469? (a) 0.6 (b) 0.006 (c) 6 (d) 0.06
  22. 22.What is the value of the digit 8 in 81.473? (a) 8 (b) 80 (c) 0.8 (d) 0.08
  23. 23.What is the value of the digit 7 in 71.532? (a) 7 (b) 0.7 (c) 0.07 (d) 70
  24. 24.3.08 + 3.6 = ? (a) 6.78 (b) 6.58 (c) 3.44 (d) 6.68
  25. 25.What is the value of the digit 7 in 31.748? (a) 0.07 (b) 7 (c) 0.007 (d) 0.7
  26. 26.Which is the greatest: 0.8, 0.741, 0.065, 0.83? (a) 0.8 (b) 0.741 (c) 0.065 (d) 0.83
  27. 27.Which is the smallest: 0.073, 0.29, 0.2, 0.144? (a) 0.073 (b) 0.29 (c) 0.2 (d) 0.144
  28. 28.What is the value of the digit 8 in 28.139? (a) 0.8 (b) 8 (c) 80 (d) 0.08
  29. 29.8.49 + 1.1 = ? (a) 9.69 (b) 9.59 (c) 8.6 (d) 9.49
  30. 30.6.72 + 2.2 = ? (a) 9.02 (b) 8.92 (c) 8.82 (d) 6.94
  31. 31.What is the value of the digit 8 in 43.682? (a) 0.8 (b) 0.08 (c) 0.008 (d) 8
  32. 32.9.52 + 9.7 = ? (a) 19.12 (b) 19.22 (c) 10.49 (d) 19.32
  33. 33.6.21 + 5.7 = ? (a) 11.91 (b) 12.01 (c) 11.81 (d) 6.78
  34. 34.2.35 + 5.7 = ? (a) 8.15 (b) 7.95 (c) 2.92 (d) 8.05
  35. 35.What is the value of the digit 3 in 56.314? (a) 0.03 (b) 0.003 (c) 0.3 (d) 3
  36. 36.What is the value of the digit 1 in 13.957? (a) 0.1 (b) 10 (c) 0.01 (d) 1
  37. 37.Which is the smallest: 0.078, 0.83, 0.8, 0.785? (a) 0.078 (b) 0.83 (c) 0.8 (d) 0.785
  38. 38.Which is the greatest: 0.635, 0.77, 0.054, 0.7? (a) 0.635 (b) 0.77 (c) 0.054 (d) 0.7
  39. 39.Which is the greatest: 0.088, 0.89, 0.752, 0.8? (a) 0.088 (b) 0.89 (c) 0.752 (d) 0.8
  40. 40.What is the value of the digit 1 in 35.719? (a) 1 (b) 0.001 (c) 0.1 (d) 0.01

Answer key

  1. 5.51
  2. 0.7
  3. 12.63
  4. 0.08
  5. 20
  6. 0.32
  7. 0.098
  8. 0.22
  9. 0.099
  10. 0.3
  11. 0.9
  12. 0.23
  13. 0.025
  14. 15.63
  15. 0.8
  16. 3.17
  17. 8
  18. 6.86
  19. 11.99
  20. 2
  21. 0.06
  22. 80
  23. 70
  24. 6.68
  25. 0.7
  26. 0.83
  27. 0.073
  28. 8
  29. 9.59
  30. 8.92
  31. 0.08
  32. 19.22
  33. 11.91
  34. 8.05
  35. 0.3
  36. 10
  37. 0.078
  38. 0.77
  39. 0.89
  40. 0.01

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