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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 547 · 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. 1.8.07 + 4.8 = ? (a) 12.77 (b) 12.87 (c) 12.97 (d) 8.55
  2. 2.What is the value of the digit 2 in 65.732? (a) 2 (b) 0.2 (c) 0.002 (d) 0.02
  3. 3.Which is the greatest: 0.087, 0.71, 0.617, 0.7? (a) 0.087 (b) 0.71 (c) 0.617 (d) 0.7
  4. 4.3.23 + 8.4 = ? (a) 11.63 (b) 4.07 (c) 11.53 (d) 11.73
  5. 5.What is the value of the digit 5 in 41.852? (a) 5 (b) 0.05 (c) 0.5 (d) 0.005
  6. 6.Which is the smallest: 0.537, 0.6, 0.061, 0.65? (a) 0.537 (b) 0.6 (c) 0.061 (d) 0.65
  7. 7.What is the value of the digit 6 in 32.168? (a) 6 (b) 0.006 (c) 0.06 (d) 0.6
  8. 8.Which is the greatest: 0.174, 0.21, 0.2, 0.091? (a) 0.174 (b) 0.21 (c) 0.2 (d) 0.091
  9. 9.Which is the greatest: 0.68, 0.515, 0.6, 0.046? (a) 0.68 (b) 0.515 (c) 0.6 (d) 0.046
  10. 10.What is the value of the digit 1 in 48.321? (a) 1 (b) 0.01 (c) 0.001 (d) 0.1
  11. 11.What is the value of the digit 5 in 15.328? (a) 0.05 (b) 0.5 (c) 50 (d) 5
  12. 12.9.63 + 9.6 = ? (a) 19.13 (b) 19.33 (c) 19.23 (d) 10.59
  13. 13.What is the value of the digit 6 in 24.679? (a) 6 (b) 0.006 (c) 0.6 (d) 0.06
  14. 14.7.24 + 5.5 = ? (a) 12.64 (b) 12.74 (c) 7.79 (d) 12.84
  15. 15.What is the value of the digit 6 in 79.168? (a) 0.6 (b) 0.06 (c) 0.006 (d) 6
  16. 16.Which is the greatest: 0.764, 0.87, 0.015, 0.8? (a) 0.764 (b) 0.87 (c) 0.015 (d) 0.8
  17. 17.Which is the smallest: 0.045, 0.32, 0.226, 0.3? (a) 0.045 (b) 0.32 (c) 0.226 (d) 0.3
  18. 18.What is the value of the digit 9 in 53.849? (a) 0.9 (b) 0.09 (c) 9 (d) 0.009
  19. 19.What is the value of the digit 1 in 39.184? (a) 0.01 (b) 1 (c) 0.1 (d) 0.001
  20. 20.6.81 + 2.3 = ? (a) 7.04 (b) 9.11 (c) 9.01 (d) 9.21
  21. 21.1.45 + 5.7 = ? (a) 2.02 (b) 7.05 (c) 7.15 (d) 7.25
  22. 22.What is the value of the digit 8 in 24.968? (a) 0.08 (b) 0.8 (c) 8 (d) 0.008
  23. 23.Which is the greatest: 0.261, 0.3, 0.089, 0.34? (a) 0.261 (b) 0.3 (c) 0.089 (d) 0.34
  24. 24.Which is the smallest: 0.493, 0.092, 0.53, 0.5? (a) 0.493 (b) 0.092 (c) 0.53 (d) 0.5
  25. 25.1.41 + 4.7 = ? (a) 6.01 (b) 6.21 (c) 6.11 (d) 1.88
  26. 26.Which is the greatest: 0.6, 0.69, 0.047, 0.523? (a) 0.6 (b) 0.69 (c) 0.047 (d) 0.523
  27. 27.7.53 + 4.8 = ? (a) 8.01 (b) 12.43 (c) 12.33 (d) 12.23
  28. 28.1.08 + 5.3 = ? (a) 6.28 (b) 1.61 (c) 6.38 (d) 6.48
  29. 29.6.38 + 3.8 = ? (a) 10.28 (b) 6.76 (c) 10.18 (d) 10.08
  30. 30.What is the value of the digit 7 in 71.432? (a) 0.7 (b) 7 (c) 70 (d) 0.07
  31. 31.What is the value of the digit 8 in 78.312? (a) 0.08 (b) 8 (c) 80 (d) 0.8
  32. 32.What is the value of the digit 2 in 28.461? (a) 0.02 (b) 2 (c) 0.2 (d) 20
  33. 33.1.02 + 3.3 = ? (a) 4.22 (b) 4.32 (c) 4.42 (d) 1.35
  34. 34.4.71 + 1.5 = ? (a) 6.31 (b) 6.11 (c) 6.21 (d) 4.86
  35. 35.Which is the smallest: 0.098, 0.62, 0.522, 0.6? (a) 0.098 (b) 0.62 (c) 0.522 (d) 0.6
  36. 36.Which is the greatest: 0.028, 0.45, 0.351, 0.4? (a) 0.028 (b) 0.45 (c) 0.351 (d) 0.4
  37. 37.8.52 + 4.2 = ? (a) 8.94 (b) 12.62 (c) 12.82 (d) 12.72
  38. 38.9.74 + 4.5 = ? (a) 14.34 (b) 14.24 (c) 14.14 (d) 10.19
  39. 39.What is the value of the digit 1 in 32.471? (a) 0.1 (b) 1 (c) 0.01 (d) 0.001
  40. 40.Which is the greatest: 0.76, 0.7, 0.653, 0.072? (a) 0.76 (b) 0.7 (c) 0.653 (d) 0.072

Answer key

  1. 12.87
  2. 0.002
  3. 0.71
  4. 11.63
  5. 0.05
  6. 0.061
  7. 0.06
  8. 0.21
  9. 0.68
  10. 0.001
  11. 5
  12. 19.23
  13. 0.6
  14. 12.74
  15. 0.06
  16. 0.87
  17. 0.045
  18. 0.009
  19. 0.1
  20. 9.11
  21. 7.15
  22. 0.008
  23. 0.34
  24. 0.092
  25. 6.11
  26. 0.69
  27. 12.33
  28. 6.38
  29. 10.18
  30. 70
  31. 8
  32. 20
  33. 4.32
  34. 6.21
  35. 0.098
  36. 0.45
  37. 12.72
  38. 14.24
  39. 0.001
  40. 0.76

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