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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 640 · 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.What is the value of the digit 3 in 49.837? (a) 3 (b) 0.03 (c) 0.3 (d) 0.003
  2. 2.2.28 + 9.5 = ? (a) 11.88 (b) 11.68 (c) 3.23 (d) 11.78
  3. 3.What is the value of the digit 6 in 68.721? (a) 60 (b) 6 (c) 0.06 (d) 0.6
  4. 4.4.26 + 3.9 = ? (a) 8.06 (b) 4.65 (c) 8.16 (d) 8.26
  5. 5.1.14 + 1.2 = ? (a) 2.24 (b) 1.26 (c) 2.34 (d) 2.44
  6. 6.9.74 + 5.5 = ? (a) 15.24 (b) 15.14 (c) 10.29 (d) 15.34
  7. 7.Which is the smallest: 0.5, 0.498, 0.53, 0.073? (a) 0.5 (b) 0.498 (c) 0.53 (d) 0.073
  8. 8.Which is the greatest: 0.2, 0.051, 0.29, 0.122? (a) 0.2 (b) 0.051 (c) 0.29 (d) 0.122
  9. 9.What is the value of the digit 4 in 85.274? (a) 4 (b) 0.4 (c) 0.004 (d) 0.04
  10. 10.What is the value of the digit 7 in 47.281? (a) 70 (b) 0.07 (c) 0.7 (d) 7
  11. 11.What is the value of the digit 4 in 46.718? (a) 4 (b) 0.04 (c) 0.4 (d) 40
  12. 12.6.41 + 1.1 = ? (a) 6.52 (b) 7.61 (c) 7.41 (d) 7.51
  13. 13.Which is the smallest: 0.73, 0.088, 0.689, 0.7? (a) 0.73 (b) 0.088 (c) 0.689 (d) 0.7
  14. 14.Which is the smallest: 0.35, 0.221, 0.029, 0.3? (a) 0.35 (b) 0.221 (c) 0.029 (d) 0.3
  15. 15.5.55 + 4.3 = ? (a) 9.85 (b) 9.95 (c) 5.98 (d) 9.75
  16. 16.What is the value of the digit 7 in 19.357? (a) 0.07 (b) 0.7 (c) 0.007 (d) 7
  17. 17.8.86 + 4.4 = ? (a) 13.36 (b) 13.26 (c) 9.3 (d) 13.16
  18. 18.What is the value of the digit 5 in 24.581? (a) 5 (b) 0.5 (c) 0.05 (d) 0.005
  19. 19.Which is the greatest: 0.22, 0.181, 0.036, 0.2? (a) 0.22 (b) 0.181 (c) 0.036 (d) 0.2
  20. 20.Which is the smallest: 0.54, 0.5, 0.085, 0.478? (a) 0.54 (b) 0.5 (c) 0.085 (d) 0.478
  21. 21.Which is the smallest: 0.043, 0.7, 0.71, 0.619? (a) 0.043 (b) 0.7 (c) 0.71 (d) 0.619
  22. 22.Which is the greatest: 0.36, 0.3, 0.241, 0.045? (a) 0.36 (b) 0.3 (c) 0.241 (d) 0.045
  23. 23.Which is the smallest: 0.028, 0.5, 0.51, 0.454? (a) 0.028 (b) 0.5 (c) 0.51 (d) 0.454
  24. 24.What is the value of the digit 4 in 42.618? (a) 40 (b) 0.4 (c) 4 (d) 0.04
  25. 25.What is the value of the digit 1 in 93.615? (a) 0.01 (b) 1 (c) 0.1 (d) 0.001
  26. 26.Which is the smallest: 0.2, 0.181, 0.24, 0.058? (a) 0.2 (b) 0.181 (c) 0.24 (d) 0.058
  27. 27.Which is the greatest: 0.8, 0.732, 0.029, 0.89? (a) 0.8 (b) 0.732 (c) 0.029 (d) 0.89
  28. 28.What is the value of the digit 5 in 51.639? (a) 0.5 (b) 50 (c) 5 (d) 0.05
  29. 29.What is the value of the digit 4 in 98.764? (a) 0.04 (b) 0.004 (c) 0.4 (d) 4
  30. 30.Which is the greatest: 0.8, 0.065, 0.86, 0.712? (a) 0.8 (b) 0.065 (c) 0.86 (d) 0.712
  31. 31.Which is the greatest: 0.025, 0.57, 0.458, 0.5? (a) 0.025 (b) 0.57 (c) 0.458 (d) 0.5
  32. 32.What is the value of the digit 9 in 25.349? (a) 0.009 (b) 0.09 (c) 9 (d) 0.9
  33. 33.4.38 + 3.3 = ? (a) 7.58 (b) 4.71 (c) 7.78 (d) 7.68
  34. 34.Which is the smallest: 0.392, 0.036, 0.47, 0.4? (a) 0.392 (b) 0.036 (c) 0.47 (d) 0.4
  35. 35.What is the value of the digit 4 in 59.418? (a) 0.4 (b) 4 (c) 0.004 (d) 0.04
  36. 36.What is the value of the digit 7 in 94.716? (a) 0.07 (b) 0.7 (c) 0.007 (d) 7
  37. 37.1.57 + 2.3 = ? (a) 1.8 (b) 3.77 (c) 3.87 (d) 3.97
  38. 38.8.91 + 4.3 = ? (a) 13.21 (b) 9.34 (c) 13.31 (d) 13.11
  39. 39.Which is the greatest: 0.093, 0.7, 0.625, 0.72? (a) 0.093 (b) 0.7 (c) 0.625 (d) 0.72
  40. 40.What is the value of the digit 5 in 63.541? (a) 0.005 (b) 0.5 (c) 0.05 (d) 5

Answer key

  1. 0.03
  2. 11.78
  3. 60
  4. 8.16
  5. 2.34
  6. 15.24
  7. 0.073
  8. 0.29
  9. 0.004
  10. 7
  11. 40
  12. 7.51
  13. 0.088
  14. 0.029
  15. 9.85
  16. 0.007
  17. 13.26
  18. 0.5
  19. 0.22
  20. 0.085
  21. 0.043
  22. 0.36
  23. 0.028
  24. 40
  25. 0.01
  26. 0.058
  27. 0.89
  28. 50
  29. 0.004
  30. 0.86
  31. 0.57
  32. 0.009
  33. 7.68
  34. 0.036
  35. 0.4
  36. 0.7
  37. 3.87
  38. 13.21
  39. 0.72
  40. 0.5

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