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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 546 · 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 88 =
  2. 2.Half of 196 =
  3. 3.Double 79 =
  4. 4.Half of 16 =
  5. 5.Half of 42 =
  6. 6.Half of 144 =
  7. 7.Double 45 =
  8. 8.Double 59 =
  9. 9.Half of 158 =
  10. 10.Half of 178 =
  11. 11.Half of 26 =
  12. 12.Double 68 =
  13. 13.Half of 112 =
  14. 14.Double 33 =
  15. 15.Half of 192 =
  16. 16.Half of 24 =
  17. 17.Half of 44 =
  18. 18.Double 28 =
  19. 19.Double 69 =
  20. 20.Half of 54 =
  21. 21.Double 98 =
  22. 22.Half of 122 =
  23. 23.Double 49 =
  24. 24.Half of 28 =
  25. 25.Half of 194 =
  26. 26.Double 21 =
  27. 27.Half of 176 =
  28. 28.Double 87 =
  29. 29.Half of 74 =
  30. 30.Double 26 =
  31. 31.Double 89 =
  32. 32.Double 71 =
  33. 33.Half of 134 =
  34. 34.Double 55 =
  35. 35.Double 75 =
  36. 36.Double 73 =
  37. 37.Double 14 =
  38. 38.Double 61 =
  39. 39.Half of 182 =
  40. 40.Double 95 =

Answer key

  1. 44
  2. 98
  3. 158
  4. 8
  5. 21
  6. 72
  7. 90
  8. 118
  9. 79
  10. 89
  11. 13
  12. 136
  13. 56
  14. 66
  15. 96
  16. 12
  17. 22
  18. 56
  19. 138
  20. 27
  21. 196
  22. 61
  23. 98
  24. 14
  25. 97
  26. 42
  27. 88
  28. 174
  29. 37
  30. 52
  31. 178
  32. 142
  33. 67
  34. 110
  35. 150
  36. 146
  37. 28
  38. 122
  39. 91
  40. 190

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