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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 206 · 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. 1.5.51 + 2.6 = ? (a) 8.21 (b) 5.77 (c) 8.11 (d) 8.01
  2. 2.4.84 + 6.3 = ? (a) 11.24 (b) 5.47 (c) 11.14 (d) 11.04
  3. 3.What is the value of the digit 8 in 61.983? (a) 8 (b) 0.08 (c) 0.8 (d) 0.008
  4. 4.What is the value of the digit 3 in 25.743? (a) 0.003 (b) 3 (c) 0.3 (d) 0.03
  5. 5.What is the value of the digit 2 in 27.549? (a) 0.02 (b) 2 (c) 20 (d) 0.2
  6. 6.What is the value of the digit 1 in 37.251? (a) 1 (b) 0.01 (c) 0.1 (d) 0.001
  7. 7.What is the value of the digit 1 in 12.594? (a) 1 (b) 0.01 (c) 10 (d) 0.1
  8. 8.Which is the smallest: 0.5, 0.449, 0.51, 0.013? (a) 0.5 (b) 0.449 (c) 0.51 (d) 0.013
  9. 9.What is the value of the digit 7 in 73.268? (a) 7 (b) 0.07 (c) 70 (d) 0.7
  10. 10.1.55 + 3.4 = ? (a) 4.95 (b) 5.05 (c) 1.89 (d) 4.85
  11. 11.4.95 + 8.2 = ? (a) 13.25 (b) 5.77 (c) 13.15 (d) 13.05
  12. 12.What is the value of the digit 3 in 82.163? (a) 0.003 (b) 3 (c) 0.03 (d) 0.3
  13. 13.1.06 + 1.1 = ? (a) 1.17 (b) 2.26 (c) 2.16 (d) 2.06
  14. 14.1.15 + 2.6 = ? (a) 3.65 (b) 3.85 (c) 3.75 (d) 1.41
  15. 15.Which is the greatest: 0.025, 0.5, 0.53, 0.474? (a) 0.025 (b) 0.5 (c) 0.53 (d) 0.474
  16. 16.Which is the greatest: 0.533, 0.65, 0.074, 0.6? (a) 0.533 (b) 0.65 (c) 0.074 (d) 0.6
  17. 17.6.28 + 2.2 = ? (a) 8.58 (b) 8.38 (c) 8.48 (d) 6.5
  18. 18.Which is the smallest: 0.62, 0.6, 0.551, 0.013? (a) 0.62 (b) 0.6 (c) 0.551 (d) 0.013
  19. 19.Which is the smallest: 0.092, 0.8, 0.727, 0.87? (a) 0.092 (b) 0.8 (c) 0.727 (d) 0.87
  20. 20.What is the value of the digit 8 in 78.296? (a) 0.8 (b) 8 (c) 80 (d) 0.08
  21. 21.What is the value of the digit 1 in 76.514? (a) 0.1 (b) 1 (c) 0.01 (d) 0.001
  22. 22.Which is the smallest: 0.012, 0.5, 0.52, 0.432? (a) 0.012 (b) 0.5 (c) 0.52 (d) 0.432
  23. 23.7.99 + 6.2 = ? (a) 14.29 (b) 14.19 (c) 8.61 (d) 14.09
  24. 24.What is the value of the digit 7 in 59.817? (a) 0.007 (b) 0.7 (c) 0.07 (d) 7
  25. 25.Which is the greatest: 0.259, 0.072, 0.3, 0.39? (a) 0.259 (b) 0.072 (c) 0.3 (d) 0.39
  26. 26.What is the value of the digit 4 in 67.498? (a) 0.004 (b) 0.04 (c) 0.4 (d) 4
  27. 27.4.25 + 7.6 = ? (a) 5.01 (b) 11.75 (c) 11.95 (d) 11.85
  28. 28.Which is the greatest: 0.051, 0.5, 0.52, 0.428? (a) 0.051 (b) 0.5 (c) 0.52 (d) 0.428
  29. 29.7.51 + 6.1 = ? (a) 13.71 (b) 13.51 (c) 8.12 (d) 13.61
  30. 30.9.59 + 1.2 = ? (a) 10.79 (b) 9.71 (c) 10.69 (d) 10.89
  31. 31.Which is the greatest: 0.391, 0.037, 0.4, 0.48? (a) 0.391 (b) 0.037 (c) 0.4 (d) 0.48
  32. 32.What is the value of the digit 8 in 89.576? (a) 8 (b) 0.8 (c) 0.08 (d) 80
  33. 33.Which is the smallest: 0.099, 0.111, 0.25, 0.2? (a) 0.099 (b) 0.111 (c) 0.25 (d) 0.2
  34. 34.4.93 + 5.3 = ? (a) 10.33 (b) 5.46 (c) 10.13 (d) 10.23
  35. 35.What is the value of the digit 9 in 31.629? (a) 0.09 (b) 0.009 (c) 0.9 (d) 9
  36. 36.8.48 + 5.7 = ? (a) 9.05 (b) 14.28 (c) 14.18 (d) 14.08
  37. 37.Which is the greatest: 0.659, 0.7, 0.061, 0.74? (a) 0.659 (b) 0.7 (c) 0.061 (d) 0.74
  38. 38.Which is the greatest: 0.542, 0.67, 0.024, 0.6? (a) 0.542 (b) 0.67 (c) 0.024 (d) 0.6
  39. 39.2.86 + 1.8 = ? (a) 4.56 (b) 4.66 (c) 3.04 (d) 4.76
  40. 40.Which is the greatest: 0.4, 0.45, 0.321, 0.097? (a) 0.4 (b) 0.45 (c) 0.321 (d) 0.097

Answer key

  1. 8.11
  2. 11.14
  3. 0.08
  4. 0.003
  5. 20
  6. 0.001
  7. 10
  8. 0.013
  9. 70
  10. 4.95
  11. 13.15
  12. 0.003
  13. 2.16
  14. 3.75
  15. 0.53
  16. 0.65
  17. 8.48
  18. 0.013
  19. 0.092
  20. 8
  21. 0.01
  22. 0.012
  23. 14.19
  24. 0.007
  25. 0.39
  26. 0.4
  27. 11.85
  28. 0.52
  29. 13.61
  30. 10.79
  31. 0.48
  32. 80
  33. 0.099
  34. 10.23
  35. 0.009
  36. 14.18
  37. 0.74
  38. 0.67
  39. 4.66
  40. 0.45

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