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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 216 · 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. 1.6.19 + 4.7 = ? (a) 10.79 (b) 10.99 (c) 10.89 (d) 6.66
  2. 2.6.24 + 4.1 = ? (a) 6.65 (b) 10.24 (c) 10.44 (d) 10.34
  3. 3.Which is the smallest: 0.175, 0.23, 0.018, 0.2? (a) 0.175 (b) 0.23 (c) 0.018 (d) 0.2
  4. 4.6.66 + 7.9 = ? (a) 14.66 (b) 14.56 (c) 14.46 (d) 7.45
  5. 5.5.24 + 6.4 = ? (a) 11.74 (b) 11.64 (c) 11.54 (d) 5.88
  6. 6.3.44 + 1.9 = ? (a) 3.63 (b) 5.34 (c) 5.24 (d) 5.44
  7. 7.2.56 + 3.7 = ? (a) 2.93 (b) 6.16 (c) 6.36 (d) 6.26
  8. 8.Which is the smallest: 0.033, 0.59, 0.433, 0.5? (a) 0.033 (b) 0.59 (c) 0.433 (d) 0.5
  9. 9.Which is the smallest: 0.72, 0.7, 0.639, 0.014? (a) 0.72 (b) 0.7 (c) 0.639 (d) 0.014
  10. 10.What is the value of the digit 8 in 19.582? (a) 0.008 (b) 0.8 (c) 0.08 (d) 8
  11. 11.Which is the greatest: 0.518, 0.6, 0.62, 0.089? (a) 0.518 (b) 0.6 (c) 0.62 (d) 0.089
  12. 12.Which is the greatest: 0.44, 0.396, 0.066, 0.4? (a) 0.44 (b) 0.396 (c) 0.066 (d) 0.4
  13. 13.Which is the smallest: 0.648, 0.7, 0.78, 0.024? (a) 0.648 (b) 0.7 (c) 0.78 (d) 0.024
  14. 14.What is the value of the digit 3 in 24.369? (a) 0.3 (b) 0.003 (c) 0.03 (d) 3
  15. 15.What is the value of the digit 8 in 23.784? (a) 8 (b) 0.8 (c) 0.008 (d) 0.08
  16. 16.What is the value of the digit 9 in 16.983? (a) 0.09 (b) 0.009 (c) 0.9 (d) 9
  17. 17.3.41 + 5.9 = ? (a) 4 (b) 9.21 (c) 9.31 (d) 9.41
  18. 18.9.24 + 2.7 = ? (a) 11.84 (b) 11.94 (c) 9.51 (d) 12.04
  19. 19.What is the value of the digit 9 in 69.732? (a) 0.09 (b) 90 (c) 0.9 (d) 9
  20. 20.What is the value of the digit 8 in 89.173? (a) 0.8 (b) 0.08 (c) 80 (d) 8
  21. 21.What is the value of the digit 1 in 71.269? (a) 10 (b) 0.1 (c) 1 (d) 0.01
  22. 22.2.48 + 6.2 = ? (a) 8.58 (b) 8.68 (c) 3.1 (d) 8.78
  23. 23.Which is the smallest: 0.5, 0.51, 0.089, 0.433? (a) 0.5 (b) 0.51 (c) 0.089 (d) 0.433
  24. 24.6.99 + 1.4 = ? (a) 8.39 (b) 7.13 (c) 8.49 (d) 8.29
  25. 25.3.15 + 3.7 = ? (a) 3.52 (b) 6.75 (c) 6.95 (d) 6.85
  26. 26.9.49 + 9.3 = ? (a) 10.42 (b) 18.79 (c) 18.69 (d) 18.89
  27. 27.7.99 + 1.8 = ? (a) 9.69 (b) 9.89 (c) 9.79 (d) 8.17
  28. 28.What is the value of the digit 4 in 18.496? (a) 4 (b) 0.04 (c) 0.004 (d) 0.4
  29. 29.3.49 + 2.8 = ? (a) 6.39 (b) 3.77 (c) 6.19 (d) 6.29
  30. 30.What is the value of the digit 7 in 17.239? (a) 70 (b) 7 (c) 0.7 (d) 0.07
  31. 31.Which is the smallest: 0.77, 0.639, 0.7, 0.047? (a) 0.77 (b) 0.639 (c) 0.7 (d) 0.047
  32. 32.4.41 + 4.8 = ? (a) 4.89 (b) 9.21 (c) 9.11 (d) 9.31
  33. 33.Which is the smallest: 0.245, 0.044, 0.3, 0.32? (a) 0.245 (b) 0.044 (c) 0.3 (d) 0.32
  34. 34.1.82 + 4.2 = ? (a) 5.92 (b) 6.02 (c) 2.24 (d) 6.12
  35. 35.What is the value of the digit 6 in 79.862? (a) 0.006 (b) 0.06 (c) 6 (d) 0.6
  36. 36.9.56 + 5.7 = ? (a) 15.16 (b) 15.36 (c) 10.13 (d) 15.26
  37. 37.What is the value of the digit 3 in 51.364? (a) 0.03 (b) 0.003 (c) 3 (d) 0.3
  38. 38.4.11 + 2.1 = ? (a) 6.11 (b) 6.31 (c) 4.32 (d) 6.21
  39. 39.Which is the greatest: 0.157, 0.2, 0.26, 0.077? (a) 0.157 (b) 0.2 (c) 0.26 (d) 0.077
  40. 40.Which is the smallest: 0.8, 0.86, 0.774, 0.097? (a) 0.8 (b) 0.86 (c) 0.774 (d) 0.097

Answer key

  1. 10.89
  2. 10.34
  3. 0.018
  4. 14.56
  5. 11.64
  6. 5.34
  7. 6.26
  8. 0.033
  9. 0.014
  10. 0.08
  11. 0.62
  12. 0.44
  13. 0.024
  14. 0.3
  15. 0.08
  16. 0.9
  17. 9.31
  18. 11.94
  19. 9
  20. 80
  21. 1
  22. 8.68
  23. 0.089
  24. 8.39
  25. 6.85
  26. 18.79
  27. 9.79
  28. 0.4
  29. 6.29
  30. 7
  31. 0.047
  32. 9.21
  33. 0.044
  34. 6.02
  35. 0.06
  36. 15.26
  37. 0.3
  38. 6.21
  39. 0.26
  40. 0.097

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