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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 580 · 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.Half of 116 =
  2. 2.Half of 46 =
  3. 3.Double 28 =
  4. 4.Half of 22 =
  5. 5.Half of 192 =
  6. 6.Double 94 =
  7. 7.Double 43 =
  8. 8.Double 79 =
  9. 9.Double 47 =
  10. 10.Double 27 =
  11. 11.Double 68 =
  12. 12.Half of 92 =
  13. 13.Half of 36 =
  14. 14.Half of 102 =
  15. 15.Half of 178 =
  16. 16.Double 71 =
  17. 17.Half of 72 =
  18. 18.Half of 136 =
  19. 19.Double 62 =
  20. 20.Half of 104 =
  21. 21.Double 91 =
  22. 22.Half of 58 =
  23. 23.Double 99 =
  24. 24.Half of 66 =
  25. 25.Double 75 =
  26. 26.Half of 144 =
  27. 27.Double 24 =
  28. 28.Double 18 =
  29. 29.Half of 88 =
  30. 30.Half of 94 =
  31. 31.Double 23 =
  32. 32.Double 89 =
  33. 33.Half of 14 =
  34. 34.Double 38 =
  35. 35.Double 76 =
  36. 36.Half of 172 =
  37. 37.Double 87 =
  38. 38.Double 58 =
  39. 39.Half of 152 =
  40. 40.Double 35 =

Answer key

  1. 58
  2. 23
  3. 56
  4. 11
  5. 96
  6. 188
  7. 86
  8. 158
  9. 94
  10. 54
  11. 136
  12. 46
  13. 18
  14. 51
  15. 89
  16. 142
  17. 36
  18. 68
  19. 124
  20. 52
  21. 182
  22. 29
  23. 198
  24. 33
  25. 150
  26. 72
  27. 48
  28. 36
  29. 44
  30. 47
  31. 46
  32. 178
  33. 7
  34. 76
  35. 152
  36. 86
  37. 174
  38. 116
  39. 76
  40. 70

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