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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 982 · 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. 1.1.51 + 4.4 = ? (a) 5.81 (b) 6.01 (c) 5.91 (d) 1.95
  2. 2.1.95 + 6.1 = ? (a) 7.95 (b) 2.56 (c) 8.15 (d) 8.05
  3. 3.3.23 + 5.7 = ? (a) 3.8 (b) 8.83 (c) 8.93 (d) 9.03
  4. 4.9.36 + 3.1 = ? (a) 12.56 (b) 12.46 (c) 12.36 (d) 9.67
  5. 5.Which is the smallest: 0.41, 0.047, 0.399, 0.4? (a) 0.41 (b) 0.047 (c) 0.399 (d) 0.4
  6. 6.6.01 + 2.6 = ? (a) 8.71 (b) 8.51 (c) 6.27 (d) 8.61
  7. 7.What is the value of the digit 7 in 47.163? (a) 70 (b) 0.7 (c) 7 (d) 0.07
  8. 8.4.53 + 1.8 = ? (a) 6.33 (b) 6.43 (c) 4.71 (d) 6.23
  9. 9.Which is the greatest: 0.2, 0.136, 0.052, 0.21? (a) 0.2 (b) 0.136 (c) 0.052 (d) 0.21
  10. 10.What is the value of the digit 1 in 41.952? (a) 0.01 (b) 1 (c) 0.1 (d) 10
  11. 11.9.55 + 1.2 = ? (a) 10.65 (b) 9.67 (c) 10.75 (d) 10.85
  12. 12.What is the value of the digit 2 in 29.718? (a) 2 (b) 0.2 (c) 0.02 (d) 20
  13. 13.6.15 + 3.2 = ? (a) 9.35 (b) 9.45 (c) 9.25 (d) 6.47
  14. 14.Which is the greatest: 0.2, 0.032, 0.126, 0.26? (a) 0.2 (b) 0.032 (c) 0.126 (d) 0.26
  15. 15.What is the value of the digit 3 in 12.463? (a) 0.03 (b) 0.3 (c) 3 (d) 0.003
  16. 16.What is the value of the digit 2 in 19.472? (a) 0.2 (b) 0.02 (c) 0.002 (d) 2
  17. 17.6.68 + 6.2 = ? (a) 12.78 (b) 12.88 (c) 7.3 (d) 12.98
  18. 18.Which is the greatest: 0.029, 0.86, 0.8, 0.753? (a) 0.029 (b) 0.86 (c) 0.8 (d) 0.753
  19. 19.2.79 + 1.4 = ? (a) 2.93 (b) 4.19 (c) 4.29 (d) 4.09
  20. 20.What is the value of the digit 4 in 56.947? (a) 0.004 (b) 4 (c) 0.04 (d) 0.4
  21. 21.Which is the greatest: 0.419, 0.5, 0.074, 0.59? (a) 0.419 (b) 0.5 (c) 0.074 (d) 0.59
  22. 22.What is the value of the digit 8 in 57.812? (a) 0.8 (b) 0.08 (c) 8 (d) 0.008
  23. 23.1.97 + 4.2 = ? (a) 6.17 (b) 2.39 (c) 6.07 (d) 6.27
  24. 24.What is the value of the digit 3 in 65.823? (a) 0.03 (b) 0.003 (c) 0.3 (d) 3
  25. 25.9.31 + 3.8 = ? (a) 13.21 (b) 13.01 (c) 9.69 (d) 13.11
  26. 26.What is the value of the digit 7 in 57.816? (a) 70 (b) 7 (c) 0.07 (d) 0.7
  27. 27.Which is the smallest: 0.149, 0.2, 0.091, 0.27? (a) 0.149 (b) 0.2 (c) 0.091 (d) 0.27
  28. 28.3.92 + 6.8 = ? (a) 10.82 (b) 4.6 (c) 10.62 (d) 10.72
  29. 29.4.89 + 7.8 = ? (a) 12.59 (b) 5.67 (c) 12.69 (d) 12.79
  30. 30.What is the value of the digit 5 in 57.164? (a) 0.5 (b) 5 (c) 50 (d) 0.05
  31. 31.1.56 + 7.3 = ? (a) 2.29 (b) 8.86 (c) 8.76 (d) 8.96
  32. 32.6.04 + 9.6 = ? (a) 15.54 (b) 15.64 (c) 15.74 (d) 7
  33. 33.What is the value of the digit 7 in 17.528? (a) 70 (b) 0.7 (c) 7 (d) 0.07
  34. 34.What is the value of the digit 8 in 67.893? (a) 0.008 (b) 8 (c) 0.08 (d) 0.8
  35. 35.What is the value of the digit 1 in 75.139? (a) 1 (b) 0.01 (c) 0.1 (d) 0.001
  36. 36.7.43 + 4.9 = ? (a) 12.33 (b) 12.23 (c) 12.43 (d) 7.92
  37. 37.What is the value of the digit 1 in 59.621? (a) 1 (b) 0.01 (c) 0.001 (d) 0.1
  38. 38.7.82 + 7.6 = ? (a) 15.52 (b) 15.32 (c) 15.42 (d) 8.58
  39. 39.7.02 + 6.3 = ? (a) 7.65 (b) 13.22 (c) 13.32 (d) 13.42
  40. 40.What is the value of the digit 8 in 78.524? (a) 0.08 (b) 8 (c) 80 (d) 0.8

Answer key

  1. 5.91
  2. 8.05
  3. 8.93
  4. 12.46
  5. 0.047
  6. 8.61
  7. 7
  8. 6.33
  9. 0.21
  10. 1
  11. 10.75
  12. 20
  13. 9.35
  14. 0.26
  15. 0.003
  16. 0.002
  17. 12.88
  18. 0.86
  19. 4.19
  20. 0.04
  21. 0.59
  22. 0.8
  23. 6.17
  24. 0.003
  25. 13.11
  26. 7
  27. 0.091
  28. 10.72
  29. 12.69
  30. 50
  31. 8.86
  32. 15.64
  33. 7
  34. 0.8
  35. 0.1
  36. 12.33
  37. 0.001
  38. 15.42
  39. 13.32
  40. 8

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