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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 951 · 40 questions
TalentJR

The trick (Split and double): Split the number into tens and ones: 37 = 30 + 7. Double each part (30 → 60, 7 → 14) — or halve each part. Add the two answers: 60 + 14 = 74.

NameDateTime takenScore ___ / 40
  1. 1.Double 44 =
  2. 2.Half of 182 =
  3. 3.Half of 178 =
  4. 4.Double 46 =
  5. 5.Half of 16 =
  6. 6.Half of 184 =
  7. 7.Double 11 =
  8. 8.Half of 122 =
  9. 9.Half of 56 =
  10. 10.Double 36 =
  11. 11.Half of 152 =
  12. 12.Half of 36 =
  13. 13.Half of 176 =
  14. 14.Half of 154 =
  15. 15.Half of 94 =
  16. 16.Half of 108 =
  17. 17.Double 19 =
  18. 18.Double 12 =
  19. 19.Double 93 =
  20. 20.Half of 112 =
  21. 21.Double 21 =
  22. 22.Double 71 =
  23. 23.Double 57 =
  24. 24.Half of 24 =
  25. 25.Double 14 =
  26. 26.Double 13 =
  27. 27.Double 31 =
  28. 28.Half of 162 =
  29. 29.Half of 12 =
  30. 30.Half of 18 =
  31. 31.Double 79 =
  32. 32.Double 68 =
  33. 33.Half of 26 =
  34. 34.Half of 158 =
  35. 35.Double 53 =
  36. 36.Double 84 =
  37. 37.Half of 42 =
  38. 38.Half of 72 =
  39. 39.Double 85 =
  40. 40.Half of 44 =

Answer key

  1. 88
  2. 91
  3. 89
  4. 92
  5. 8
  6. 92
  7. 22
  8. 61
  9. 28
  10. 72
  11. 76
  12. 18
  13. 88
  14. 77
  15. 47
  16. 54
  17. 38
  18. 24
  19. 186
  20. 56
  21. 42
  22. 142
  23. 114
  24. 12
  25. 28
  26. 26
  27. 62
  28. 81
  29. 6
  30. 9
  31. 158
  32. 136
  33. 13
  34. 79
  35. 106
  36. 168
  37. 21
  38. 36
  39. 170
  40. 22

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