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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 25 · 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 9 in 51.649? (a) 0.9 (b) 0.09 (c) 0.009 (d) 9
  2. 2.9.72 + 2.1 = ? (a) 11.72 (b) 11.92 (c) 11.82 (d) 9.93
  3. 3.What is the value of the digit 2 in 61.243? (a) 2 (b) 0.002 (c) 0.02 (d) 0.2
  4. 4.5.84 + 8.5 = ? (a) 6.69 (b) 14.34 (c) 14.44 (d) 14.24
  5. 5.What is the value of the digit 2 in 94.512? (a) 0.2 (b) 0.002 (c) 2 (d) 0.02
  6. 6.What is the value of the digit 4 in 31.457? (a) 0.4 (b) 4 (c) 0.04 (d) 0.004
  7. 7.4.09 + 4.1 = ? (a) 8.09 (b) 8.19 (c) 4.5 (d) 8.29
  8. 8.What is the value of the digit 7 in 21.796? (a) 7 (b) 0.07 (c) 0.007 (d) 0.7
  9. 9.Which is the smallest: 0.78, 0.622, 0.066, 0.7? (a) 0.78 (b) 0.622 (c) 0.066 (d) 0.7
  10. 10.Which is the smallest: 0.034, 0.232, 0.32, 0.3? (a) 0.034 (b) 0.232 (c) 0.32 (d) 0.3
  11. 11.What is the value of the digit 3 in 47.853? (a) 0.003 (b) 0.3 (c) 3 (d) 0.03
  12. 12.Which is the smallest: 0.46, 0.317, 0.4, 0.051? (a) 0.46 (b) 0.317 (c) 0.4 (d) 0.051
  13. 13.Which is the smallest: 0.35, 0.3, 0.218, 0.075? (a) 0.35 (b) 0.3 (c) 0.218 (d) 0.075
  14. 14.Which is the greatest: 0.075, 0.5, 0.59, 0.419? (a) 0.075 (b) 0.5 (c) 0.59 (d) 0.419
  15. 15.What is the value of the digit 7 in 34.817? (a) 0.007 (b) 0.7 (c) 0.07 (d) 7
  16. 16.4.61 + 7.7 = ? (a) 12.41 (b) 5.38 (c) 12.21 (d) 12.31
  17. 17.What is the value of the digit 5 in 25.673? (a) 0.05 (b) 0.5 (c) 5 (d) 50
  18. 18.Which is the greatest: 0.38, 0.055, 0.256, 0.3? (a) 0.38 (b) 0.055 (c) 0.256 (d) 0.3
  19. 19.8.56 + 2.5 = ? (a) 11.06 (b) 10.96 (c) 8.81 (d) 11.16
  20. 20.9.91 + 7.1 = ? (a) 17.11 (b) 10.62 (c) 17.01 (d) 16.91
  21. 21.3.09 + 2.5 = ? (a) 5.59 (b) 5.49 (c) 5.69 (d) 3.34
  22. 22.1.38 + 5.4 = ? (a) 6.78 (b) 6.88 (c) 1.92 (d) 6.68
  23. 23.Which is the smallest: 0.037, 0.79, 0.7, 0.694? (a) 0.037 (b) 0.79 (c) 0.7 (d) 0.694
  24. 24.What is the value of the digit 7 in 78.145? (a) 7 (b) 70 (c) 0.07 (d) 0.7
  25. 25.What is the value of the digit 4 in 49.285? (a) 40 (b) 0.04 (c) 0.4 (d) 4
  26. 26.9.77 + 8.6 = ? (a) 18.27 (b) 18.47 (c) 10.63 (d) 18.37
  27. 27.1.63 + 3.6 = ? (a) 5.33 (b) 1.99 (c) 5.13 (d) 5.23
  28. 28.8.81 + 2.7 = ? (a) 9.08 (b) 11.61 (c) 11.41 (d) 11.51
  29. 29.6.16 + 6.2 = ? (a) 6.78 (b) 12.26 (c) 12.36 (d) 12.46
  30. 30.What is the value of the digit 3 in 75.831? (a) 0.03 (b) 0.3 (c) 3 (d) 0.003
  31. 31.What is the value of the digit 4 in 27.481? (a) 4 (b) 0.04 (c) 0.4 (d) 0.004
  32. 32.3.97 + 3.4 = ? (a) 7.27 (b) 7.47 (c) 7.37 (d) 4.31
  33. 33.Which is the smallest: 0.412, 0.055, 0.5, 0.53? (a) 0.412 (b) 0.055 (c) 0.5 (d) 0.53
  34. 34.Which is the greatest: 0.065, 0.21, 0.2, 0.148? (a) 0.065 (b) 0.21 (c) 0.2 (d) 0.148
  35. 35.What is the value of the digit 4 in 79.246? (a) 0.4 (b) 4 (c) 0.004 (d) 0.04
  36. 36.Which is the greatest: 0.6, 0.61, 0.578, 0.024? (a) 0.6 (b) 0.61 (c) 0.578 (d) 0.024
  37. 37.Which is the smallest: 0.041, 0.737, 0.82, 0.8? (a) 0.041 (b) 0.737 (c) 0.82 (d) 0.8
  38. 38.What is the value of the digit 6 in 29.376? (a) 0.6 (b) 6 (c) 0.006 (d) 0.06
  39. 39.Which is the smallest: 0.046, 0.8, 0.728, 0.86? (a) 0.046 (b) 0.8 (c) 0.728 (d) 0.86
  40. 40.What is the value of the digit 1 in 18.523? (a) 0.01 (b) 0.1 (c) 10 (d) 1

Answer key

  1. 0.009
  2. 11.82
  3. 0.2
  4. 14.34
  5. 0.002
  6. 0.4
  7. 8.19
  8. 0.7
  9. 0.066
  10. 0.034
  11. 0.003
  12. 0.051
  13. 0.075
  14. 0.59
  15. 0.007
  16. 12.31
  17. 5
  18. 0.38
  19. 11.06
  20. 17.01
  21. 5.59
  22. 6.78
  23. 0.037
  24. 70
  25. 40
  26. 18.37
  27. 5.23
  28. 11.51
  29. 12.36
  30. 0.03
  31. 0.4
  32. 7.37
  33. 0.055
  34. 0.21
  35. 0.04
  36. 0.61
  37. 0.041
  38. 0.006
  39. 0.046
  40. 10

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