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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 287 · 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: 0.192, 0.019, 0.2, 0.26? (a) 0.192 (b) 0.019 (c) 0.2 (d) 0.26
  2. 2.Which is the smallest: 0.76, 0.048, 0.669, 0.7? (a) 0.76 (b) 0.048 (c) 0.669 (d) 0.7
  3. 3.Which is the smallest: 0.036, 0.48, 0.313, 0.4? (a) 0.036 (b) 0.48 (c) 0.313 (d) 0.4
  4. 4.What is the value of the digit 2 in 64.253? (a) 0.02 (b) 0.002 (c) 2 (d) 0.2
  5. 5.7.71 + 7.1 = ? (a) 14.91 (b) 8.42 (c) 14.71 (d) 14.81
  6. 6.Which is the smallest: 0.45, 0.392, 0.4, 0.027? (a) 0.45 (b) 0.392 (c) 0.4 (d) 0.027
  7. 7.7.41 + 3.5 = ? (a) 10.81 (b) 11.01 (c) 7.76 (d) 10.91
  8. 8.5.63 + 1.6 = ? (a) 7.33 (b) 7.23 (c) 7.13 (d) 5.79
  9. 9.What is the value of the digit 2 in 91.528? (a) 0.02 (b) 0.2 (c) 2 (d) 0.002
  10. 10.Which is the greatest: 0.038, 0.719, 0.82, 0.8? (a) 0.038 (b) 0.719 (c) 0.82 (d) 0.8
  11. 11.Which is the greatest: 0.078, 0.458, 0.59, 0.5? (a) 0.078 (b) 0.458 (c) 0.59 (d) 0.5
  12. 12.What is the value of the digit 6 in 62.345? (a) 6 (b) 0.6 (c) 60 (d) 0.06
  13. 13.2.13 + 4.3 = ? (a) 6.43 (b) 6.33 (c) 6.53 (d) 2.56
  14. 14.2.55 + 7.8 = ? (a) 10.35 (b) 10.25 (c) 10.45 (d) 3.33
  15. 15.Which is the smallest: 0.81, 0.079, 0.8, 0.725? (a) 0.81 (b) 0.079 (c) 0.8 (d) 0.725
  16. 16.4.41 + 7.9 = ? (a) 12.31 (b) 12.41 (c) 5.2 (d) 12.21
  17. 17.7.47 + 5.2 = ? (a) 12.77 (b) 12.67 (c) 12.57 (d) 7.99
  18. 18.7.34 + 4.3 = ? (a) 11.74 (b) 11.54 (c) 11.64 (d) 7.77
  19. 19.7.91 + 2.7 = ? (a) 10.61 (b) 8.18 (c) 10.51 (d) 10.71
  20. 20.9.75 + 9.3 = ? (a) 19.05 (b) 10.68 (c) 18.95 (d) 19.15
  21. 21.Which is the greatest: 0.57, 0.027, 0.5, 0.491? (a) 0.57 (b) 0.027 (c) 0.5 (d) 0.491
  22. 22.8.15 + 6.1 = ? (a) 14.35 (b) 14.15 (c) 8.76 (d) 14.25
  23. 23.Which is the smallest: 0.069, 0.85, 0.8, 0.732? (a) 0.069 (b) 0.85 (c) 0.8 (d) 0.732
  24. 24.Which is the greatest: 0.36, 0.022, 0.298, 0.3? (a) 0.36 (b) 0.022 (c) 0.298 (d) 0.3
  25. 25.What is the value of the digit 3 in 31.786? (a) 0.03 (b) 3 (c) 30 (d) 0.3
  26. 26.2.91 + 7.1 = ? (a) 3.62 (b) 9.91 (c) 10.11 (d) 10.01
  27. 27.7.46 + 3.5 = ? (a) 7.81 (b) 11.06 (c) 10.96 (d) 10.86
  28. 28.Which is the greatest: 0.25, 0.129, 0.054, 0.2? (a) 0.25 (b) 0.129 (c) 0.054 (d) 0.2
  29. 29.4.93 + 8.3 = ? (a) 5.76 (b) 13.13 (c) 13.33 (d) 13.23
  30. 30.Which is the greatest: 0.85, 0.8, 0.086, 0.753? (a) 0.85 (b) 0.8 (c) 0.086 (d) 0.753
  31. 31.Which is the greatest: 0.532, 0.64, 0.087, 0.6? (a) 0.532 (b) 0.64 (c) 0.087 (d) 0.6
  32. 32.9.82 + 2.5 = ? (a) 12.22 (b) 10.07 (c) 12.42 (d) 12.32
  33. 33.What is the value of the digit 5 in 43.915? (a) 5 (b) 0.005 (c) 0.05 (d) 0.5
  34. 34.4.93 + 4.3 = ? (a) 9.33 (b) 9.13 (c) 9.23 (d) 5.36
  35. 35.4.21 + 9.1 = ? (a) 5.12 (b) 13.41 (c) 13.31 (d) 13.21
  36. 36.Which is the greatest: 0.115, 0.27, 0.092, 0.2? (a) 0.115 (b) 0.27 (c) 0.092 (d) 0.2
  37. 37.8.31 + 1.1 = ? (a) 8.42 (b) 9.31 (c) 9.51 (d) 9.41
  38. 38.7.72 + 2.3 = ? (a) 9.92 (b) 10.02 (c) 10.12 (d) 7.95
  39. 39.What is the value of the digit 5 in 96.145? (a) 5 (b) 0.005 (c) 0.5 (d) 0.05
  40. 40.Which is the smallest: 0.072, 0.428, 0.5, 0.51? (a) 0.072 (b) 0.428 (c) 0.5 (d) 0.51

Answer key

  1. 0.019
  2. 0.048
  3. 0.036
  4. 0.2
  5. 14.81
  6. 0.027
  7. 10.91
  8. 7.23
  9. 0.02
  10. 0.82
  11. 0.59
  12. 60
  13. 6.43
  14. 10.35
  15. 0.079
  16. 12.31
  17. 12.67
  18. 11.64
  19. 10.61
  20. 19.05
  21. 0.57
  22. 14.25
  23. 0.069
  24. 0.36
  25. 30
  26. 10.01
  27. 10.96
  28. 0.25
  29. 13.23
  30. 0.85
  31. 0.64
  32. 12.32
  33. 0.005
  34. 9.23
  35. 13.31
  36. 0.27
  37. 9.41
  38. 10.02
  39. 0.005
  40. 0.072

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