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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 305 · 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. 1.4.58 + 6.1 = ? (a) 10.78 (b) 10.58 (c) 10.68 (d) 5.19
  2. 2.Which is the smallest: 0.371, 0.45, 0.023, 0.4? (a) 0.371 (b) 0.45 (c) 0.023 (d) 0.4
  3. 3.2.02 + 6.1 = ? (a) 8.02 (b) 2.63 (c) 8.22 (d) 8.12
  4. 4.What is the value of the digit 9 in 53.962? (a) 0.9 (b) 9 (c) 0.09 (d) 0.009
  5. 5.3.46 + 4.3 = ? (a) 3.89 (b) 7.86 (c) 7.76 (d) 7.66
  6. 6.6.51 + 5.8 = ? (a) 12.41 (b) 12.31 (c) 12.21 (d) 7.09
  7. 7.What is the value of the digit 9 in 35.921? (a) 0.9 (b) 9 (c) 0.009 (d) 0.09
  8. 8.9.49 + 9.4 = ? (a) 18.79 (b) 10.43 (c) 18.99 (d) 18.89
  9. 9.What is the value of the digit 6 in 87.165? (a) 0.006 (b) 0.6 (c) 0.06 (d) 6
  10. 10.5.45 + 7.4 = ? (a) 12.85 (b) 12.95 (c) 6.19 (d) 12.75
  11. 11.Which is the greatest: 0.58, 0.055, 0.5, 0.488? (a) 0.58 (b) 0.055 (c) 0.5 (d) 0.488
  12. 12.Which is the greatest: 0.66, 0.6, 0.052, 0.532? (a) 0.66 (b) 0.6 (c) 0.052 (d) 0.532
  13. 13.4.35 + 8.8 = ? (a) 5.23 (b) 13.05 (c) 13.15 (d) 13.25
  14. 14.What is the value of the digit 3 in 34.927? (a) 30 (b) 0.03 (c) 3 (d) 0.3
  15. 15.Which is the smallest: 0.594, 0.015, 0.65, 0.6? (a) 0.594 (b) 0.015 (c) 0.65 (d) 0.6
  16. 16.What is the value of the digit 2 in 12.894? (a) 0.2 (b) 20 (c) 0.02 (d) 2
  17. 17.2.85 + 6.7 = ? (a) 9.65 (b) 9.55 (c) 3.52 (d) 9.45
  18. 18.2.95 + 2.8 = ? (a) 5.65 (b) 3.23 (c) 5.75 (d) 5.85
  19. 19.Which is the smallest: 0.533, 0.6, 0.036, 0.68? (a) 0.533 (b) 0.6 (c) 0.036 (d) 0.68
  20. 20.Which is the smallest: 0.46, 0.364, 0.042, 0.4? (a) 0.46 (b) 0.364 (c) 0.042 (d) 0.4
  21. 21.Which is the greatest: 0.044, 0.22, 0.2, 0.189? (a) 0.044 (b) 0.22 (c) 0.2 (d) 0.189
  22. 22.1.42 + 9.4 = ? (a) 10.92 (b) 10.72 (c) 2.36 (d) 10.82
  23. 23.What is the value of the digit 9 in 96.283? (a) 0.09 (b) 90 (c) 9 (d) 0.9
  24. 24.What is the value of the digit 6 in 27.196? (a) 0.006 (b) 0.06 (c) 0.6 (d) 6
  25. 25.Which is the greatest: 0.074, 0.7, 0.73, 0.672? (a) 0.074 (b) 0.7 (c) 0.73 (d) 0.672
  26. 26.Which is the smallest: 0.79, 0.043, 0.634, 0.7? (a) 0.79 (b) 0.043 (c) 0.634 (d) 0.7
  27. 27.Which is the smallest: 0.216, 0.3, 0.36, 0.044? (a) 0.216 (b) 0.3 (c) 0.36 (d) 0.044
  28. 28.6.66 + 9.4 = ? (a) 16.16 (b) 7.6 (c) 16.06 (d) 15.96
  29. 29.Which is the greatest: 0.021, 0.2, 0.186, 0.21? (a) 0.021 (b) 0.2 (c) 0.186 (d) 0.21
  30. 30.Which is the greatest: 0.125, 0.23, 0.019, 0.2? (a) 0.125 (b) 0.23 (c) 0.019 (d) 0.2
  31. 31.Which is the greatest: 0.046, 0.43, 0.4, 0.379? (a) 0.046 (b) 0.43 (c) 0.4 (d) 0.379
  32. 32.What is the value of the digit 8 in 21.968? (a) 8 (b) 0.8 (c) 0.008 (d) 0.08
  33. 33.3.41 + 6.3 = ? (a) 9.71 (b) 9.81 (c) 4.04 (d) 9.61
  34. 34.Which is the smallest: 0.3, 0.241, 0.38, 0.054? (a) 0.3 (b) 0.241 (c) 0.38 (d) 0.054
  35. 35.3.15 + 5.8 = ? (a) 8.95 (b) 8.85 (c) 3.73 (d) 9.05
  36. 36.What is the value of the digit 7 in 69.257? (a) 7 (b) 0.007 (c) 0.07 (d) 0.7
  37. 37.Which is the smallest: 0.093, 0.8, 0.83, 0.735? (a) 0.093 (b) 0.8 (c) 0.83 (d) 0.735
  38. 38.7.99 + 4.4 = ? (a) 8.43 (b) 12.29 (c) 12.49 (d) 12.39
  39. 39.7.64 + 6.3 = ? (a) 14.04 (b) 13.84 (c) 13.94 (d) 8.27
  40. 40.What is the value of the digit 2 in 57.213? (a) 2 (b) 0.002 (c) 0.2 (d) 0.02

Answer key

  1. 10.68
  2. 0.023
  3. 8.12
  4. 0.9
  5. 7.76
  6. 12.31
  7. 0.9
  8. 18.89
  9. 0.06
  10. 12.85
  11. 0.58
  12. 0.66
  13. 13.15
  14. 30
  15. 0.015
  16. 2
  17. 9.55
  18. 5.75
  19. 0.036
  20. 0.042
  21. 0.22
  22. 10.82
  23. 90
  24. 0.006
  25. 0.73
  26. 0.043
  27. 0.044
  28. 16.06
  29. 0.21
  30. 0.23
  31. 0.43
  32. 0.008
  33. 9.71
  34. 0.054
  35. 8.95
  36. 0.007
  37. 0.093
  38. 12.39
  39. 13.94
  40. 0.2

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