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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 148 · 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.Which is the greatest: 0.093, 0.45, 0.348, 0.4? (a) 0.093 (b) 0.45 (c) 0.348 (d) 0.4
  2. 2.Which is the greatest: 0.169, 0.2, 0.21, 0.084? (a) 0.169 (b) 0.2 (c) 0.21 (d) 0.084
  3. 3.6.65 + 2.9 = ? (a) 9.45 (b) 9.55 (c) 9.65 (d) 6.94
  4. 4.Which is the greatest: 0.658, 0.037, 0.7, 0.74? (a) 0.658 (b) 0.037 (c) 0.7 (d) 0.74
  5. 5.What is the value of the digit 5 in 41.735? (a) 0.005 (b) 0.05 (c) 0.5 (d) 5
  6. 6.What is the value of the digit 4 in 49.178? (a) 40 (b) 0.4 (c) 4 (d) 0.04
  7. 7.4.51 + 9.1 = ? (a) 13.61 (b) 13.71 (c) 13.51 (d) 5.42
  8. 8.9.48 + 1.6 = ? (a) 11.18 (b) 10.98 (c) 11.08 (d) 9.64
  9. 9.6.81 + 4.1 = ? (a) 11.01 (b) 7.22 (c) 10.81 (d) 10.91
  10. 10.5.68 + 7.3 = ? (a) 6.41 (b) 12.98 (c) 13.08 (d) 12.88
  11. 11.8.39 + 7.9 = ? (a) 16.19 (b) 16.39 (c) 9.18 (d) 16.29
  12. 12.9.83 + 5.4 = ? (a) 15.33 (b) 10.37 (c) 15.13 (d) 15.23
  13. 13.What is the value of the digit 5 in 25.938? (a) 50 (b) 0.5 (c) 5 (d) 0.05
  14. 14.4.17 + 5.6 = ? (a) 9.87 (b) 4.73 (c) 9.77 (d) 9.67
  15. 15.What is the value of the digit 2 in 43.287? (a) 0.2 (b) 2 (c) 0.002 (d) 0.02
  16. 16.2.75 + 1.6 = ? (a) 4.35 (b) 2.91 (c) 4.25 (d) 4.45
  17. 17.2.58 + 1.7 = ? (a) 4.28 (b) 2.75 (c) 4.18 (d) 4.38
  18. 18.Which is the smallest: 0.42, 0.017, 0.4, 0.386? (a) 0.42 (b) 0.017 (c) 0.4 (d) 0.386
  19. 19.What is the value of the digit 4 in 93.461? (a) 0.004 (b) 0.4 (c) 0.04 (d) 4
  20. 20.What is the value of the digit 7 in 52.179? (a) 7 (b) 0.7 (c) 0.007 (d) 0.07
  21. 21.What is the value of the digit 7 in 25.378? (a) 0.7 (b) 7 (c) 0.07 (d) 0.007
  22. 22.2.21 + 9.9 = ? (a) 3.2 (b) 12.01 (c) 12.11 (d) 12.21
  23. 23.2.83 + 3.1 = ? (a) 5.93 (b) 3.14 (c) 6.03 (d) 5.83
  24. 24.What is the value of the digit 6 in 52.463? (a) 0.006 (b) 0.6 (c) 6 (d) 0.06
  25. 25.Which is the greatest: 0.426, 0.56, 0.033, 0.5? (a) 0.426 (b) 0.56 (c) 0.033 (d) 0.5
  26. 26.Which is the smallest: 0.085, 0.125, 0.26, 0.2? (a) 0.085 (b) 0.125 (c) 0.26 (d) 0.2
  27. 27.9.95 + 3.8 = ? (a) 13.85 (b) 13.75 (c) 10.33 (d) 13.65
  28. 28.Which is the greatest: 0.529, 0.6, 0.091, 0.61? (a) 0.529 (b) 0.6 (c) 0.091 (d) 0.61
  29. 29.What is the value of the digit 9 in 81.479? (a) 0.09 (b) 9 (c) 0.9 (d) 0.009
  30. 30.1.93 + 2.5 = ? (a) 4.43 (b) 4.33 (c) 4.53 (d) 2.18
  31. 31.6.56 + 6.3 = ? (a) 12.76 (b) 12.86 (c) 12.96 (d) 7.19
  32. 32.Which is the smallest: 0.2, 0.134, 0.075, 0.27? (a) 0.2 (b) 0.134 (c) 0.075 (d) 0.27
  33. 33.Which is the greatest: 0.073, 0.86, 0.721, 0.8? (a) 0.073 (b) 0.86 (c) 0.721 (d) 0.8
  34. 34.What is the value of the digit 7 in 31.748? (a) 0.007 (b) 7 (c) 0.7 (d) 0.07
  35. 35.8.98 + 3.3 = ? (a) 12.18 (b) 9.31 (c) 12.28 (d) 12.38
  36. 36.4.52 + 2.6 = ? (a) 7.12 (b) 7.02 (c) 4.78 (d) 7.22
  37. 37.2.35 + 5.5 = ? (a) 7.75 (b) 7.95 (c) 2.9 (d) 7.85
  38. 38.What is the value of the digit 7 in 97.164? (a) 0.07 (b) 7 (c) 0.7 (d) 70
  39. 39.6.18 + 3.1 = ? (a) 9.18 (b) 9.38 (c) 9.28 (d) 6.49
  40. 40.Which is the greatest: 0.055, 0.383, 0.47, 0.4? (a) 0.055 (b) 0.383 (c) 0.47 (d) 0.4

Answer key

  1. 0.45
  2. 0.21
  3. 9.55
  4. 0.74
  5. 0.005
  6. 40
  7. 13.61
  8. 11.08
  9. 10.91
  10. 12.98
  11. 16.29
  12. 15.23
  13. 5
  14. 9.77
  15. 0.2
  16. 4.35
  17. 4.28
  18. 0.017
  19. 0.4
  20. 0.07
  21. 0.07
  22. 12.11
  23. 5.93
  24. 0.06
  25. 0.56
  26. 0.085
  27. 13.75
  28. 0.61
  29. 0.009
  30. 4.43
  31. 12.86
  32. 0.075
  33. 0.86
  34. 0.7
  35. 12.28
  36. 7.12
  37. 7.85
  38. 7
  39. 9.28
  40. 0.47

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