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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 336 · 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. 1.1.54 + 8.8 = ? (a) 10.24 (b) 2.42 (c) 10.34 (d) 10.44
  2. 2.2.32 + 7.9 = ? (a) 3.11 (b) 10.12 (c) 10.22 (d) 10.32
  3. 3.Which is the smallest: 0.6, 0.61, 0.039, 0.558? (a) 0.6 (b) 0.61 (c) 0.039 (d) 0.558
  4. 4.7.28 + 3.1 = ? (a) 7.59 (b) 10.28 (c) 10.48 (d) 10.38
  5. 5.9.58 + 5.8 = ? (a) 15.48 (b) 10.16 (c) 15.38 (d) 15.28
  6. 6.1.13 + 5.6 = ? (a) 6.63 (b) 6.73 (c) 6.83 (d) 1.69
  7. 7.Which is the greatest: 0.266, 0.35, 0.3, 0.087? (a) 0.266 (b) 0.35 (c) 0.3 (d) 0.087
  8. 8.2.56 + 7.7 = ? (a) 10.16 (b) 10.36 (c) 10.26 (d) 3.33
  9. 9.1.69 + 9.5 = ? (a) 11.19 (b) 2.64 (c) 11.09 (d) 11.29
  10. 10.Which is the greatest: 0.416, 0.56, 0.012, 0.5? (a) 0.416 (b) 0.56 (c) 0.012 (d) 0.5
  11. 11.7.51 + 9.6 = ? (a) 17.21 (b) 8.47 (c) 17.11 (d) 17.01
  12. 12.3.27 + 4.5 = ? (a) 3.72 (b) 7.87 (c) 7.77 (d) 7.67
  13. 13.Which is the greatest: 0.784, 0.8, 0.057, 0.86? (a) 0.784 (b) 0.8 (c) 0.057 (d) 0.86
  14. 14.What is the value of the digit 7 in 73.614? (a) 0.07 (b) 0.7 (c) 70 (d) 7
  15. 15.1.61 + 8.1 = ? (a) 9.81 (b) 9.71 (c) 9.61 (d) 2.42
  16. 16.What is the value of the digit 8 in 27.618? (a) 0.08 (b) 0.008 (c) 8 (d) 0.8
  17. 17.5.22 + 5.8 = ? (a) 5.8 (b) 10.92 (c) 11.12 (d) 11.02
  18. 18.3.24 + 7.7 = ? (a) 10.94 (b) 4.01 (c) 10.84 (d) 11.04
  19. 19.What is the value of the digit 5 in 65.487? (a) 50 (b) 5 (c) 0.05 (d) 0.5
  20. 20.Which is the greatest: 0.068, 0.22, 0.2, 0.133? (a) 0.068 (b) 0.22 (c) 0.2 (d) 0.133
  21. 21.What is the value of the digit 1 in 32.815? (a) 0.1 (b) 0.01 (c) 1 (d) 0.001
  22. 22.Which is the greatest: 0.3, 0.072, 0.36, 0.256? (a) 0.3 (b) 0.072 (c) 0.36 (d) 0.256
  23. 23.7.07 + 3.6 = ? (a) 10.77 (b) 10.57 (c) 10.67 (d) 7.43
  24. 24.7.47 + 1.5 = ? (a) 7.62 (b) 8.97 (c) 8.87 (d) 9.07
  25. 25.What is the value of the digit 9 in 41.596? (a) 9 (b) 0.9 (c) 0.09 (d) 0.009
  26. 26.Which is the greatest: 0.47, 0.354, 0.041, 0.4? (a) 0.47 (b) 0.354 (c) 0.041 (d) 0.4
  27. 27.8.29 + 5.1 = ? (a) 13.39 (b) 13.29 (c) 8.8 (d) 13.49
  28. 28.Which is the smallest: 0.189, 0.028, 0.2, 0.28? (a) 0.189 (b) 0.028 (c) 0.2 (d) 0.28
  29. 29.What is the value of the digit 7 in 65.297? (a) 7 (b) 0.007 (c) 0.7 (d) 0.07
  30. 30.Which is the smallest: 0.067, 0.22, 0.141, 0.2? (a) 0.067 (b) 0.22 (c) 0.141 (d) 0.2
  31. 31.What is the value of the digit 6 in 62.951? (a) 0.6 (b) 6 (c) 60 (d) 0.06
  32. 32.Which is the greatest: 0.085, 0.3, 0.32, 0.297? (a) 0.085 (b) 0.3 (c) 0.32 (d) 0.297
  33. 33.Which is the greatest: 0.767, 0.88, 0.027, 0.8? (a) 0.767 (b) 0.88 (c) 0.027 (d) 0.8
  34. 34.Which is the smallest: 0.4, 0.379, 0.42, 0.057? (a) 0.4 (b) 0.379 (c) 0.42 (d) 0.057
  35. 35.What is the value of the digit 6 in 25.976? (a) 6 (b) 0.06 (c) 0.6 (d) 0.006
  36. 36.8.51 + 5.1 = ? (a) 13.51 (b) 13.61 (c) 9.02 (d) 13.71
  37. 37.Which is the smallest: 0.071, 0.7, 0.658, 0.71? (a) 0.071 (b) 0.7 (c) 0.658 (d) 0.71
  38. 38.3.51 + 1.5 = ? (a) 5.11 (b) 3.66 (c) 4.91 (d) 5.01
  39. 39.9.43 + 3.9 = ? (a) 13.43 (b) 13.33 (c) 9.82 (d) 13.23
  40. 40.What is the value of the digit 9 in 17.439? (a) 0.09 (b) 9 (c) 0.009 (d) 0.9

Answer key

  1. 10.34
  2. 10.22
  3. 0.039
  4. 10.38
  5. 15.38
  6. 6.73
  7. 0.35
  8. 10.26
  9. 11.19
  10. 0.56
  11. 17.11
  12. 7.77
  13. 0.86
  14. 70
  15. 9.71
  16. 0.008
  17. 11.02
  18. 10.94
  19. 5
  20. 0.22
  21. 0.01
  22. 0.36
  23. 10.67
  24. 8.97
  25. 0.09
  26. 0.47
  27. 13.39
  28. 0.028
  29. 0.007
  30. 0.067
  31. 60
  32. 0.32
  33. 0.88
  34. 0.057
  35. 0.006
  36. 13.61
  37. 0.071
  38. 5.01
  39. 13.33
  40. 0.009

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