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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 467 · 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: 0.23, 0.076, 0.163, 0.2? (a) 0.23 (b) 0.076 (c) 0.163 (d) 0.2
  2. 2.7.76 + 3.6 = ? (a) 11.36 (b) 8.12 (c) 11.46 (d) 11.26
  3. 3.2.05 + 3.2 = ? (a) 2.37 (b) 5.15 (c) 5.25 (d) 5.35
  4. 4.Which is the smallest: 0.011, 0.2, 0.21, 0.139? (a) 0.011 (b) 0.2 (c) 0.21 (d) 0.139
  5. 5.4.11 + 5.4 = ? (a) 4.65 (b) 9.61 (c) 9.51 (d) 9.41
  6. 6.4.57 + 7.1 = ? (a) 5.28 (b) 11.67 (c) 11.77 (d) 11.57
  7. 7.What is the value of the digit 8 in 63.852? (a) 0.08 (b) 8 (c) 0.008 (d) 0.8
  8. 8.What is the value of the digit 8 in 89.562? (a) 80 (b) 8 (c) 0.08 (d) 0.8
  9. 9.Which is the greatest: 0.077, 0.4, 0.43, 0.393? (a) 0.077 (b) 0.4 (c) 0.43 (d) 0.393
  10. 10.2.87 + 5.6 = ? (a) 3.43 (b) 8.57 (c) 8.47 (d) 8.37
  11. 11.Which is the smallest: 0.066, 0.2, 0.21, 0.184? (a) 0.066 (b) 0.2 (c) 0.21 (d) 0.184
  12. 12.9.32 + 4.1 = ? (a) 13.42 (b) 13.52 (c) 9.73 (d) 13.32
  13. 13.Which is the greatest: 0.292, 0.068, 0.38, 0.3? (a) 0.292 (b) 0.068 (c) 0.38 (d) 0.3
  14. 14.7.29 + 4.4 = ? (a) 11.59 (b) 7.73 (c) 11.79 (d) 11.69
  15. 15.Which is the greatest: 0.137, 0.084, 0.23, 0.2? (a) 0.137 (b) 0.084 (c) 0.23 (d) 0.2
  16. 16.3.51 + 1.7 = ? (a) 3.68 (b) 5.31 (c) 5.21 (d) 5.11
  17. 17.Which is the smallest: 0.4, 0.039, 0.338, 0.48? (a) 0.4 (b) 0.039 (c) 0.338 (d) 0.48
  18. 18.What is the value of the digit 5 in 58.123? (a) 50 (b) 0.5 (c) 0.05 (d) 5
  19. 19.6.94 + 2.1 = ? (a) 8.94 (b) 7.15 (c) 9.04 (d) 9.14
  20. 20.1.24 + 6.1 = ? (a) 7.34 (b) 1.85 (c) 7.44 (d) 7.24
  21. 21.2.09 + 1.3 = ? (a) 3.29 (b) 3.49 (c) 2.22 (d) 3.39
  22. 22.Which is the smallest: 0.243, 0.35, 0.3, 0.062? (a) 0.243 (b) 0.35 (c) 0.3 (d) 0.062
  23. 23.Which is the greatest: 0.2, 0.017, 0.26, 0.131? (a) 0.2 (b) 0.017 (c) 0.26 (d) 0.131
  24. 24.Which is the smallest: 0.73, 0.7, 0.679, 0.013? (a) 0.73 (b) 0.7 (c) 0.679 (d) 0.013
  25. 25.Which is the smallest: 0.51, 0.091, 0.5, 0.422? (a) 0.51 (b) 0.091 (c) 0.5 (d) 0.422
  26. 26.What is the value of the digit 3 in 35.624? (a) 3 (b) 0.3 (c) 30 (d) 0.03
  27. 27.2.09 + 5.2 = ? (a) 7.39 (b) 2.61 (c) 7.29 (d) 7.19
  28. 28.1.92 + 5.9 = ? (a) 7.92 (b) 7.82 (c) 7.72 (d) 2.51
  29. 29.What is the value of the digit 6 in 23.846? (a) 0.06 (b) 0.6 (c) 0.006 (d) 6
  30. 30.Which is the greatest: 0.51, 0.086, 0.5, 0.472? (a) 0.51 (b) 0.086 (c) 0.5 (d) 0.472
  31. 31.What is the value of the digit 6 in 37.261? (a) 0.06 (b) 6 (c) 0.6 (d) 0.006
  32. 32.What is the value of the digit 3 in 32.164? (a) 3 (b) 30 (c) 0.3 (d) 0.03
  33. 33.5.07 + 1.4 = ? (a) 6.37 (b) 5.21 (c) 6.47 (d) 6.57
  34. 34.What is the value of the digit 3 in 84.392? (a) 0.03 (b) 0.003 (c) 3 (d) 0.3
  35. 35.What is the value of the digit 7 in 29.417? (a) 0.07 (b) 0.007 (c) 7 (d) 0.7
  36. 36.What is the value of the digit 5 in 15.934? (a) 50 (b) 0.5 (c) 5 (d) 0.05
  37. 37.Which is the smallest: 0.32, 0.071, 0.228, 0.3? (a) 0.32 (b) 0.071 (c) 0.228 (d) 0.3
  38. 38.Which is the greatest: 0.615, 0.76, 0.7, 0.031? (a) 0.615 (b) 0.76 (c) 0.7 (d) 0.031
  39. 39.3.58 + 3.1 = ? (a) 6.78 (b) 6.58 (c) 3.89 (d) 6.68
  40. 40.7.51 + 4.6 = ? (a) 12.21 (b) 7.97 (c) 12.11 (d) 12.01

Answer key

  1. 0.076
  2. 11.36
  3. 5.25
  4. 0.011
  5. 9.51
  6. 11.67
  7. 0.8
  8. 80
  9. 0.43
  10. 8.47
  11. 0.066
  12. 13.42
  13. 0.38
  14. 11.69
  15. 0.23
  16. 5.21
  17. 0.039
  18. 50
  19. 9.04
  20. 7.34
  21. 3.39
  22. 0.062
  23. 0.26
  24. 0.013
  25. 0.091
  26. 30
  27. 7.29
  28. 7.82
  29. 0.006
  30. 0.51
  31. 0.06
  32. 30
  33. 6.47
  34. 0.3
  35. 0.007
  36. 5
  37. 0.071
  38. 0.76
  39. 6.68
  40. 12.11

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