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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 975 · 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. 1.8.38 + 8.1 = ? (a) 16.48 (b) 16.58 (c) 9.19 (d) 16.38
  2. 2.What is the value of the digit 5 in 76.895? (a) 5 (b) 0.05 (c) 0.5 (d) 0.005
  3. 3.Which is the greatest: 0.51, 0.082, 0.5, 0.485? (a) 0.51 (b) 0.082 (c) 0.5 (d) 0.485
  4. 4.Which is the smallest: 0.429, 0.033, 0.5, 0.55? (a) 0.429 (b) 0.033 (c) 0.5 (d) 0.55
  5. 5.What is the value of the digit 5 in 58.219? (a) 0.05 (b) 50 (c) 0.5 (d) 5
  6. 6.Which is the smallest: 0.45, 0.4, 0.346, 0.039? (a) 0.45 (b) 0.4 (c) 0.346 (d) 0.039
  7. 7.2.25 + 9.1 = ? (a) 11.45 (b) 11.35 (c) 11.25 (d) 3.16
  8. 8.What is the value of the digit 9 in 68.395? (a) 0.009 (b) 9 (c) 0.9 (d) 0.09
  9. 9.What is the value of the digit 5 in 53.629? (a) 0.5 (b) 5 (c) 50 (d) 0.05
  10. 10.2.98 + 9.8 = ? (a) 12.78 (b) 12.68 (c) 3.96 (d) 12.88
  11. 11.1.12 + 8.1 = ? (a) 1.93 (b) 9.32 (c) 9.12 (d) 9.22
  12. 12.Which is the greatest: 0.74, 0.638, 0.032, 0.7? (a) 0.74 (b) 0.638 (c) 0.032 (d) 0.7
  13. 13.What is the value of the digit 1 in 32.518? (a) 0.1 (b) 0.01 (c) 0.001 (d) 1
  14. 14.Which is the smallest: 0.034, 0.72, 0.7, 0.637? (a) 0.034 (b) 0.72 (c) 0.7 (d) 0.637
  15. 15.1.15 + 1.7 = ? (a) 1.32 (b) 2.75 (c) 2.85 (d) 2.95
  16. 16.8.21 + 8.6 = ? (a) 16.81 (b) 9.07 (c) 16.91 (d) 16.71
  17. 17.Which is the greatest: 0.5, 0.427, 0.096, 0.53? (a) 0.5 (b) 0.427 (c) 0.096 (d) 0.53
  18. 18.What is the value of the digit 1 in 31.572? (a) 10 (b) 1 (c) 0.1 (d) 0.01
  19. 19.What is the value of the digit 3 in 85.239? (a) 0.3 (b) 3 (c) 0.003 (d) 0.03
  20. 20.What is the value of the digit 8 in 28.795? (a) 0.8 (b) 80 (c) 0.08 (d) 8
  21. 21.What is the value of the digit 1 in 25.391? (a) 0.01 (b) 0.001 (c) 0.1 (d) 1
  22. 22.What is the value of the digit 1 in 32.165? (a) 1 (b) 0.01 (c) 0.1 (d) 0.001
  23. 23.1.86 + 6.5 = ? (a) 2.51 (b) 8.26 (c) 8.36 (d) 8.46
  24. 24.8.77 + 5.5 = ? (a) 14.27 (b) 9.32 (c) 14.17 (d) 14.37
  25. 25.What is the value of the digit 9 in 76.819? (a) 0.9 (b) 0.09 (c) 0.009 (d) 9
  26. 26.Which is the smallest: 0.81, 0.8, 0.035, 0.759? (a) 0.81 (b) 0.8 (c) 0.035 (d) 0.759
  27. 27.What is the value of the digit 6 in 13.694? (a) 0.6 (b) 0.06 (c) 6 (d) 0.006
  28. 28.What is the value of the digit 3 in 32.576? (a) 3 (b) 30 (c) 0.3 (d) 0.03
  29. 29.Which is the smallest: 0.41, 0.314, 0.021, 0.4? (a) 0.41 (b) 0.314 (c) 0.021 (d) 0.4
  30. 30.4.31 + 4.6 = ? (a) 4.77 (b) 9.01 (c) 8.91 (d) 8.81
  31. 31.Which is the smallest: 0.8, 0.89, 0.085, 0.759? (a) 0.8 (b) 0.89 (c) 0.085 (d) 0.759
  32. 32.Which is the smallest: 0.352, 0.4, 0.48, 0.018? (a) 0.352 (b) 0.4 (c) 0.48 (d) 0.018
  33. 33.7.75 + 3.1 = ? (a) 8.06 (b) 10.95 (c) 10.75 (d) 10.85
  34. 34.Which is the greatest: 0.6, 0.69, 0.521, 0.041? (a) 0.6 (b) 0.69 (c) 0.521 (d) 0.041
  35. 35.5.81 + 7.9 = ? (a) 13.71 (b) 13.61 (c) 6.6 (d) 13.81
  36. 36.Which is the greatest: 0.091, 0.362, 0.47, 0.4? (a) 0.091 (b) 0.362 (c) 0.47 (d) 0.4
  37. 37.Which is the greatest: 0.31, 0.274, 0.3, 0.086? (a) 0.31 (b) 0.274 (c) 0.3 (d) 0.086
  38. 38.What is the value of the digit 1 in 81.374? (a) 10 (b) 0.1 (c) 0.01 (d) 1
  39. 39.7.54 + 7.3 = ? (a) 8.27 (b) 14.94 (c) 14.74 (d) 14.84
  40. 40.What is the value of the digit 3 in 94.837? (a) 0.03 (b) 0.003 (c) 0.3 (d) 3

Answer key

  1. 16.48
  2. 0.005
  3. 0.51
  4. 0.033
  5. 50
  6. 0.039
  7. 11.35
  8. 0.09
  9. 50
  10. 12.78
  11. 9.22
  12. 0.74
  13. 0.01
  14. 0.034
  15. 2.85
  16. 16.81
  17. 0.53
  18. 1
  19. 0.03
  20. 8
  21. 0.001
  22. 0.1
  23. 8.36
  24. 14.27
  25. 0.009
  26. 0.035
  27. 0.6
  28. 30
  29. 0.021
  30. 8.91
  31. 0.085
  32. 0.018
  33. 10.85
  34. 0.69
  35. 13.71
  36. 0.47
  37. 0.31
  38. 1
  39. 14.84
  40. 0.03

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