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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 509 · 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. 1.6.49 + 9.1 = ? (a) 7.4 (b) 15.69 (c) 15.59 (d) 15.49
  2. 2.What is the value of the digit 1 in 21.697? (a) 0.1 (b) 1 (c) 10 (d) 0.01
  3. 3.Which is the greatest: 0.53, 0.063, 0.494, 0.5? (a) 0.53 (b) 0.063 (c) 0.494 (d) 0.5
  4. 4.What is the value of the digit 2 in 76.312? (a) 0.002 (b) 2 (c) 0.2 (d) 0.02
  5. 5.What is the value of the digit 2 in 93.284? (a) 0.02 (b) 2 (c) 0.2 (d) 0.002
  6. 6.Which is the smallest: 0.49, 0.064, 0.4, 0.356? (a) 0.49 (b) 0.064 (c) 0.4 (d) 0.356
  7. 7.Which is the greatest: 0.084, 0.682, 0.7, 0.72? (a) 0.084 (b) 0.682 (c) 0.7 (d) 0.72
  8. 8.What is the value of the digit 9 in 29.536? (a) 0.9 (b) 9 (c) 90 (d) 0.09
  9. 9.What is the value of the digit 7 in 27.391? (a) 70 (b) 7 (c) 0.07 (d) 0.7
  10. 10.3.41 + 4.7 = ? (a) 8.11 (b) 3.88 (c) 8.01 (d) 8.21
  11. 11.What is the value of the digit 9 in 68.921? (a) 0.09 (b) 9 (c) 0.9 (d) 0.009
  12. 12.4.58 + 4.8 = ? (a) 9.48 (b) 9.38 (c) 9.28 (d) 5.06
  13. 13.Which is the greatest: 0.016, 0.8, 0.88, 0.769? (a) 0.016 (b) 0.8 (c) 0.88 (d) 0.769
  14. 14.What is the value of the digit 7 in 25.387? (a) 7 (b) 0.07 (c) 0.007 (d) 0.7
  15. 15.Which is the greatest: 0.7, 0.033, 0.77, 0.672? (a) 0.7 (b) 0.033 (c) 0.77 (d) 0.672
  16. 16.7.45 + 2.3 = ? (a) 9.75 (b) 9.85 (c) 7.68 (d) 9.65
  17. 17.Which is the smallest: 0.34, 0.238, 0.3, 0.049? (a) 0.34 (b) 0.238 (c) 0.3 (d) 0.049
  18. 18.Which is the smallest: 0.7, 0.78, 0.676, 0.044? (a) 0.7 (b) 0.78 (c) 0.676 (d) 0.044
  19. 19.Which is the greatest: 0.88, 0.781, 0.8, 0.087? (a) 0.88 (b) 0.781 (c) 0.8 (d) 0.087
  20. 20.6.52 + 1.5 = ? (a) 6.67 (b) 7.92 (c) 8.02 (d) 8.12
  21. 21.Which is the greatest: 0.363, 0.4, 0.058, 0.48? (a) 0.363 (b) 0.4 (c) 0.058 (d) 0.48
  22. 22.Which is the greatest: 0.094, 0.425, 0.59, 0.5? (a) 0.094 (b) 0.425 (c) 0.59 (d) 0.5
  23. 23.What is the value of the digit 6 in 13.764? (a) 0.6 (b) 0.06 (c) 6 (d) 0.006
  24. 24.What is the value of the digit 4 in 19.486? (a) 4 (b) 0.04 (c) 0.4 (d) 0.004
  25. 25.Which is the greatest: 0.2, 0.083, 0.24, 0.115? (a) 0.2 (b) 0.083 (c) 0.24 (d) 0.115
  26. 26.What is the value of the digit 4 in 41.892? (a) 0.04 (b) 0.4 (c) 40 (d) 4
  27. 27.What is the value of the digit 8 in 68.125? (a) 8 (b) 80 (c) 0.08 (d) 0.8
  28. 28.9.98 + 1.3 = ? (a) 11.18 (b) 10.11 (c) 11.28 (d) 11.38
  29. 29.Which is the greatest: 0.074, 0.3, 0.241, 0.35? (a) 0.074 (b) 0.3 (c) 0.241 (d) 0.35
  30. 30.1.25 + 5.1 = ? (a) 6.45 (b) 6.35 (c) 6.25 (d) 1.76
  31. 31.Which is the greatest: 0.311, 0.038, 0.44, 0.4? (a) 0.311 (b) 0.038 (c) 0.44 (d) 0.4
  32. 32.Which is the greatest: 0.26, 0.2, 0.192, 0.033? (a) 0.26 (b) 0.2 (c) 0.192 (d) 0.033
  33. 33.Which is the greatest: 0.74, 0.7, 0.689, 0.013? (a) 0.74 (b) 0.7 (c) 0.689 (d) 0.013
  34. 34.What is the value of the digit 6 in 45.862? (a) 0.06 (b) 0.6 (c) 0.006 (d) 6
  35. 35.What is the value of the digit 7 in 68.752? (a) 0.007 (b) 0.7 (c) 7 (d) 0.07
  36. 36.5.01 + 5.7 = ? (a) 10.81 (b) 5.58 (c) 10.71 (d) 10.61
  37. 37.4.34 + 9.1 = ? (a) 13.34 (b) 13.44 (c) 13.54 (d) 5.25
  38. 38.8.85 + 8.3 = ? (a) 17.25 (b) 17.15 (c) 9.68 (d) 17.05
  39. 39.Which is the smallest: 0.374, 0.052, 0.42, 0.4? (a) 0.374 (b) 0.052 (c) 0.42 (d) 0.4
  40. 40.5.49 + 5.1 = ? (a) 10.49 (b) 6 (c) 10.59 (d) 10.69

Answer key

  1. 15.59
  2. 1
  3. 0.53
  4. 0.002
  5. 0.2
  6. 0.064
  7. 0.72
  8. 9
  9. 7
  10. 8.11
  11. 0.9
  12. 9.38
  13. 0.88
  14. 0.007
  15. 0.77
  16. 9.75
  17. 0.049
  18. 0.044
  19. 0.88
  20. 8.02
  21. 0.48
  22. 0.59
  23. 0.06
  24. 0.4
  25. 0.24
  26. 40
  27. 8
  28. 11.28
  29. 0.35
  30. 6.35
  31. 0.44
  32. 0.26
  33. 0.74
  34. 0.06
  35. 0.7
  36. 10.71
  37. 13.44
  38. 17.15
  39. 0.052
  40. 10.59

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