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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 612 · 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. 1.8.96 + 6.5 = ? (a) 15.56 (b) 15.36 (c) 15.46 (d) 9.61
  2. 2.Which is the greatest: 0.136, 0.2, 0.051, 0.25? (a) 0.136 (b) 0.2 (c) 0.051 (d) 0.25
  3. 3.Which is the smallest: 0.53, 0.448, 0.028, 0.5? (a) 0.53 (b) 0.448 (c) 0.028 (d) 0.5
  4. 4.Which is the smallest: 0.6, 0.543, 0.69, 0.067? (a) 0.6 (b) 0.543 (c) 0.69 (d) 0.067
  5. 5.4.28 + 6.7 = ? (a) 4.95 (b) 11.08 (c) 10.88 (d) 10.98
  6. 6.What is the value of the digit 4 in 78.234? (a) 0.04 (b) 4 (c) 0.4 (d) 0.004
  7. 7.What is the value of the digit 5 in 57.261? (a) 0.5 (b) 0.05 (c) 5 (d) 50
  8. 8.9.26 + 1.5 = ? (a) 10.86 (b) 9.41 (c) 10.66 (d) 10.76
  9. 9.What is the value of the digit 4 in 35.471? (a) 0.004 (b) 4 (c) 0.04 (d) 0.4
  10. 10.Which is the greatest: 0.092, 0.5, 0.59, 0.447? (a) 0.092 (b) 0.5 (c) 0.59 (d) 0.447
  11. 11.Which is the smallest: 0.042, 0.38, 0.3, 0.277? (a) 0.042 (b) 0.38 (c) 0.3 (d) 0.277
  12. 12.9.84 + 9.9 = ? (a) 19.84 (b) 10.83 (c) 19.74 (d) 19.64
  13. 13.3.51 + 1.1 = ? (a) 4.71 (b) 4.51 (c) 3.62 (d) 4.61
  14. 14.1.21 + 3.8 = ? (a) 5.01 (b) 1.59 (c) 4.91 (d) 5.11
  15. 15.Which is the smallest: 0.752, 0.072, 0.81, 0.8? (a) 0.752 (b) 0.072 (c) 0.81 (d) 0.8
  16. 16.4.23 + 7.3 = ? (a) 11.63 (b) 4.96 (c) 11.53 (d) 11.43
  17. 17.Which is the smallest: 0.023, 0.7, 0.623, 0.71? (a) 0.023 (b) 0.7 (c) 0.623 (d) 0.71
  18. 18.5.69 + 5.9 = ? (a) 11.69 (b) 11.49 (c) 6.28 (d) 11.59
  19. 19.Which is the greatest: 0.593, 0.6, 0.67, 0.082? (a) 0.593 (b) 0.6 (c) 0.67 (d) 0.082
  20. 20.1.24 + 9.1 = ? (a) 10.44 (b) 10.24 (c) 10.34 (d) 2.15
  21. 21.Which is the smallest: 0.78, 0.079, 0.675, 0.7? (a) 0.78 (b) 0.079 (c) 0.675 (d) 0.7
  22. 22.Which is the greatest: 0.35, 0.022, 0.3, 0.274? (a) 0.35 (b) 0.022 (c) 0.3 (d) 0.274
  23. 23.2.52 + 5.4 = ? (a) 7.82 (b) 3.06 (c) 8.02 (d) 7.92
  24. 24.Which is the greatest: 0.684, 0.71, 0.035, 0.7? (a) 0.684 (b) 0.71 (c) 0.035 (d) 0.7
  25. 25.5.21 + 6.4 = ? (a) 5.85 (b) 11.51 (c) 11.71 (d) 11.61
  26. 26.What is the value of the digit 7 in 37.185? (a) 70 (b) 7 (c) 0.07 (d) 0.7
  27. 27.2.01 + 3.9 = ? (a) 2.4 (b) 5.91 (c) 6.01 (d) 5.81
  28. 28.1.14 + 2.8 = ? (a) 3.84 (b) 1.42 (c) 3.94 (d) 4.04
  29. 29.6.58 + 7.1 = ? (a) 13.68 (b) 13.78 (c) 13.58 (d) 7.29
  30. 30.What is the value of the digit 2 in 48.792? (a) 0.02 (b) 0.002 (c) 0.2 (d) 2
  31. 31.Which is the greatest: 0.077, 0.77, 0.7, 0.676? (a) 0.077 (b) 0.77 (c) 0.7 (d) 0.676
  32. 32.What is the value of the digit 9 in 25.697? (a) 9 (b) 0.09 (c) 0.9 (d) 0.009
  33. 33.3.15 + 4.1 = ? (a) 7.35 (b) 7.25 (c) 3.56 (d) 7.15
  34. 34.8.86 + 3.9 = ? (a) 9.25 (b) 12.76 (c) 12.86 (d) 12.66
  35. 35.What is the value of the digit 6 in 62.384? (a) 60 (b) 0.06 (c) 6 (d) 0.6
  36. 36.Which is the greatest: 0.051, 0.185, 0.29, 0.2? (a) 0.051 (b) 0.185 (c) 0.29 (d) 0.2
  37. 37.What is the value of the digit 7 in 72.419? (a) 0.7 (b) 70 (c) 0.07 (d) 7
  38. 38.2.61 + 5.3 = ? (a) 3.14 (b) 7.81 (c) 8.01 (d) 7.91
  39. 39.3.94 + 1.9 = ? (a) 5.74 (b) 5.94 (c) 4.13 (d) 5.84
  40. 40.What is the value of the digit 5 in 45.718? (a) 5 (b) 0.05 (c) 0.5 (d) 50

Answer key

  1. 15.46
  2. 0.25
  3. 0.028
  4. 0.067
  5. 10.98
  6. 0.004
  7. 50
  8. 10.76
  9. 0.4
  10. 0.59
  11. 0.042
  12. 19.74
  13. 4.61
  14. 5.01
  15. 0.072
  16. 11.53
  17. 0.023
  18. 11.59
  19. 0.67
  20. 10.34
  21. 0.079
  22. 0.35
  23. 7.92
  24. 0.71
  25. 11.61
  26. 7
  27. 5.91
  28. 3.94
  29. 13.68
  30. 0.002
  31. 0.77
  32. 0.09
  33. 7.25
  34. 12.76
  35. 60
  36. 0.29
  37. 70
  38. 7.91
  39. 5.84
  40. 5

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