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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 861 · 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. 1.7.18 + 2.3 = ? (a) 7.41 (b) 9.38 (c) 9.58 (d) 9.48
  2. 2.What is the value of the digit 4 in 49.185? (a) 0.4 (b) 4 (c) 0.04 (d) 40
  3. 3.Which is the smallest: 0.28, 0.2, 0.042, 0.159? (a) 0.28 (b) 0.2 (c) 0.042 (d) 0.159
  4. 4.7.78 + 4.2 = ? (a) 11.88 (b) 12.08 (c) 11.98 (d) 8.2
  5. 5.5.14 + 1.5 = ? (a) 5.29 (b) 6.64 (c) 6.74 (d) 6.54
  6. 6.Which is the smallest: 0.2, 0.24, 0.149, 0.072? (a) 0.2 (b) 0.24 (c) 0.149 (d) 0.072
  7. 7.Which is the smallest: 0.617, 0.058, 0.76, 0.7? (a) 0.617 (b) 0.058 (c) 0.76 (d) 0.7
  8. 8.Which is the greatest: 0.6, 0.558, 0.63, 0.011? (a) 0.6 (b) 0.558 (c) 0.63 (d) 0.011
  9. 9.What is the value of the digit 5 in 42.685? (a) 0.005 (b) 5 (c) 0.5 (d) 0.05
  10. 10.3.27 + 6.3 = ? (a) 9.47 (b) 3.9 (c) 9.67 (d) 9.57
  11. 11.Which is the smallest: 0.089, 0.72, 0.683, 0.7? (a) 0.089 (b) 0.72 (c) 0.683 (d) 0.7
  12. 12.What is the value of the digit 2 in 76.342? (a) 0.02 (b) 0.002 (c) 0.2 (d) 2
  13. 13.What is the value of the digit 8 in 26.381? (a) 0.8 (b) 0.08 (c) 8 (d) 0.008
  14. 14.9.23 + 6.8 = ? (a) 16.13 (b) 15.93 (c) 16.03 (d) 9.91
  15. 15.What is the value of the digit 5 in 21.635? (a) 0.05 (b) 0.005 (c) 5 (d) 0.5
  16. 16.Which is the smallest: 0.65, 0.062, 0.6, 0.512? (a) 0.65 (b) 0.062 (c) 0.6 (d) 0.512
  17. 17.6.84 + 8.3 = ? (a) 15.04 (b) 7.67 (c) 15.14 (d) 15.24
  18. 18.4.82 + 7.6 = ? (a) 12.52 (b) 5.58 (c) 12.32 (d) 12.42
  19. 19.5.44 + 1.4 = ? (a) 6.94 (b) 5.58 (c) 6.74 (d) 6.84
  20. 20.What is the value of the digit 2 in 72.384? (a) 0.2 (b) 20 (c) 0.02 (d) 2
  21. 21.5.18 + 4.7 = ? (a) 9.98 (b) 5.65 (c) 9.78 (d) 9.88
  22. 22.5.29 + 8.1 = ? (a) 13.39 (b) 13.29 (c) 13.49 (d) 6.1
  23. 23.What is the value of the digit 8 in 49.837? (a) 0.8 (b) 0.008 (c) 0.08 (d) 8
  24. 24.Which is the smallest: 0.111, 0.029, 0.26, 0.2? (a) 0.111 (b) 0.029 (c) 0.26 (d) 0.2
  25. 25.6.82 + 6.1 = ? (a) 12.92 (b) 12.82 (c) 13.02 (d) 7.43
  26. 26.Which is the smallest: 0.419, 0.5, 0.59, 0.049? (a) 0.419 (b) 0.5 (c) 0.59 (d) 0.049
  27. 27.1.86 + 9.1 = ? (a) 10.96 (b) 2.77 (c) 10.86 (d) 11.06
  28. 28.What is the value of the digit 4 in 27.413? (a) 4 (b) 0.4 (c) 0.04 (d) 0.004
  29. 29.7.35 + 5.1 = ? (a) 12.35 (b) 12.45 (c) 12.55 (d) 7.86
  30. 30.Which is the smallest: 0.496, 0.5, 0.52, 0.032? (a) 0.496 (b) 0.5 (c) 0.52 (d) 0.032
  31. 31.8.69 + 5.1 = ? (a) 13.79 (b) 13.89 (c) 13.69 (d) 9.2
  32. 32.4.91 + 4.1 = ? (a) 8.91 (b) 9.11 (c) 5.32 (d) 9.01
  33. 33.What is the value of the digit 9 in 57.916? (a) 9 (b) 0.9 (c) 0.09 (d) 0.009
  34. 34.What is the value of the digit 6 in 59.861? (a) 6 (b) 0.6 (c) 0.06 (d) 0.006
  35. 35.Which is the greatest: 0.619, 0.73, 0.017, 0.7? (a) 0.619 (b) 0.73 (c) 0.017 (d) 0.7
  36. 36.1.09 + 6.7 = ? (a) 7.69 (b) 7.79 (c) 7.89 (d) 1.76
  37. 37.What is the value of the digit 4 in 69.472? (a) 0.4 (b) 0.04 (c) 0.004 (d) 4
  38. 38.Which is the greatest: 0.46, 0.031, 0.362, 0.4? (a) 0.46 (b) 0.031 (c) 0.362 (d) 0.4
  39. 39.Which is the smallest: 0.686, 0.7, 0.79, 0.069? (a) 0.686 (b) 0.7 (c) 0.79 (d) 0.069
  40. 40.Which is the smallest: 0.2, 0.25, 0.114, 0.039? (a) 0.2 (b) 0.25 (c) 0.114 (d) 0.039

Answer key

  1. 9.48
  2. 40
  3. 0.042
  4. 11.98
  5. 6.64
  6. 0.072
  7. 0.058
  8. 0.63
  9. 0.005
  10. 9.57
  11. 0.089
  12. 0.002
  13. 0.08
  14. 16.03
  15. 0.005
  16. 0.062
  17. 15.14
  18. 12.42
  19. 6.84
  20. 2
  21. 9.88
  22. 13.39
  23. 0.8
  24. 0.029
  25. 12.92
  26. 0.049
  27. 10.96
  28. 0.4
  29. 12.45
  30. 0.032
  31. 13.79
  32. 9.01
  33. 0.9
  34. 0.06
  35. 0.73
  36. 7.79
  37. 0.4
  38. 0.46
  39. 0.069
  40. 0.039

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