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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 198 · 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. 1.1.66 + 3.4 = ? (a) 5.06 (b) 2 (c) 5.16 (d) 4.96
  2. 2.Which is the greatest: 0.591, 0.68, 0.034, 0.6? (a) 0.591 (b) 0.68 (c) 0.034 (d) 0.6
  3. 3.4.38 + 2.9 = ? (a) 7.38 (b) 4.67 (c) 7.18 (d) 7.28
  4. 4.6.68 + 9.7 = ? (a) 7.65 (b) 16.48 (c) 16.28 (d) 16.38
  5. 5.What is the value of the digit 7 in 92.873? (a) 7 (b) 0.7 (c) 0.07 (d) 0.007
  6. 6.8.78 + 4.1 = ? (a) 12.88 (b) 12.78 (c) 12.98 (d) 9.19
  7. 7.Which is the smallest: 0.6, 0.62, 0.093, 0.519? (a) 0.6 (b) 0.62 (c) 0.093 (d) 0.519
  8. 8.What is the value of the digit 1 in 78.531? (a) 1 (b) 0.01 (c) 0.1 (d) 0.001
  9. 9.8.04 + 8.5 = ? (a) 16.64 (b) 16.54 (c) 8.89 (d) 16.44
  10. 10.What is the value of the digit 9 in 38.497? (a) 0.09 (b) 0.9 (c) 9 (d) 0.009
  11. 11.4.53 + 4.3 = ? (a) 8.93 (b) 8.73 (c) 8.83 (d) 4.96
  12. 12.1.29 + 4.7 = ? (a) 5.89 (b) 6.09 (c) 5.99 (d) 1.76
  13. 13.What is the value of the digit 3 in 32.546? (a) 0.3 (b) 3 (c) 0.03 (d) 30
  14. 14.What is the value of the digit 6 in 96.512? (a) 6 (b) 0.6 (c) 0.06 (d) 60
  15. 15.Which is the smallest: 0.63, 0.019, 0.6, 0.551? (a) 0.63 (b) 0.019 (c) 0.6 (d) 0.551
  16. 16.9.01 + 2.8 = ? (a) 11.71 (b) 9.29 (c) 11.91 (d) 11.81
  17. 17.Which is the smallest: 0.4, 0.324, 0.051, 0.42? (a) 0.4 (b) 0.324 (c) 0.051 (d) 0.42
  18. 18.What is the value of the digit 3 in 59.312? (a) 3 (b) 0.3 (c) 0.03 (d) 0.003
  19. 19.1.52 + 2.1 = ? (a) 3.62 (b) 3.72 (c) 1.73 (d) 3.52
  20. 20.5.67 + 2.2 = ? (a) 5.89 (b) 7.87 (c) 7.97 (d) 7.77
  21. 21.1.13 + 4.5 = ? (a) 1.58 (b) 5.73 (c) 5.53 (d) 5.63
  22. 22.Which is the smallest: 0.583, 0.68, 0.071, 0.6? (a) 0.583 (b) 0.68 (c) 0.071 (d) 0.6
  23. 23.1.74 + 3.5 = ? (a) 5.34 (b) 5.14 (c) 2.09 (d) 5.24
  24. 24.7.01 + 9.7 = ? (a) 7.98 (b) 16.61 (c) 16.71 (d) 16.81
  25. 25.4.53 + 1.5 = ? (a) 6.13 (b) 6.03 (c) 4.68 (d) 5.93
  26. 26.Which is the greatest: 0.043, 0.33, 0.3, 0.265? (a) 0.043 (b) 0.33 (c) 0.3 (d) 0.265
  27. 27.Which is the smallest: 0.546, 0.66, 0.6, 0.027? (a) 0.546 (b) 0.66 (c) 0.6 (d) 0.027
  28. 28.8.81 + 5.5 = ? (a) 14.21 (b) 9.36 (c) 14.31 (d) 14.41
  29. 29.What is the value of the digit 4 in 51.742? (a) 4 (b) 0.004 (c) 0.4 (d) 0.04
  30. 30.6.43 + 1.5 = ? (a) 7.93 (b) 7.83 (c) 8.03 (d) 6.58
  31. 31.Which is the smallest: 0.028, 0.385, 0.46, 0.4? (a) 0.028 (b) 0.385 (c) 0.46 (d) 0.4
  32. 32.6.11 + 5.8 = ? (a) 12.01 (b) 11.81 (c) 11.91 (d) 6.69
  33. 33.9.57 + 7.4 = ? (a) 10.31 (b) 16.87 (c) 16.97 (d) 17.07
  34. 34.What is the value of the digit 5 in 93.657? (a) 0.005 (b) 0.5 (c) 5 (d) 0.05
  35. 35.What is the value of the digit 5 in 13.925? (a) 0.005 (b) 0.05 (c) 5 (d) 0.5
  36. 36.What is the value of the digit 3 in 63.954? (a) 0.03 (b) 30 (c) 0.3 (d) 3
  37. 37.Which is the smallest: 0.79, 0.047, 0.674, 0.7? (a) 0.79 (b) 0.047 (c) 0.674 (d) 0.7
  38. 38.Which is the greatest: 0.149, 0.24, 0.085, 0.2? (a) 0.149 (b) 0.24 (c) 0.085 (d) 0.2
  39. 39.9.23 + 1.9 = ? (a) 9.42 (b) 11.23 (c) 11.13 (d) 11.03
  40. 40.What is the value of the digit 5 in 39.547? (a) 5 (b) 0.5 (c) 0.005 (d) 0.05

Answer key

  1. 5.06
  2. 0.68
  3. 7.28
  4. 16.38
  5. 0.07
  6. 12.88
  7. 0.093
  8. 0.001
  9. 16.54
  10. 0.09
  11. 8.83
  12. 5.99
  13. 30
  14. 6
  15. 0.019
  16. 11.81
  17. 0.051
  18. 0.3
  19. 3.62
  20. 7.87
  21. 5.63
  22. 0.071
  23. 5.24
  24. 16.71
  25. 6.03
  26. 0.33
  27. 0.027
  28. 14.31
  29. 0.04
  30. 7.93
  31. 0.028
  32. 11.91
  33. 16.97
  34. 0.05
  35. 0.005
  36. 3
  37. 0.047
  38. 0.24
  39. 11.13
  40. 0.5

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