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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 274 · 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 196 =
  2. 2.Half of 162 =
  3. 3.Double 99 =
  4. 4.Half of 94 =
  5. 5.Double 73 =
  6. 6.Half of 172 =
  7. 7.Half of 116 =
  8. 8.Double 86 =
  9. 9.Double 13 =
  10. 10.Half of 84 =
  11. 11.Half of 42 =
  12. 12.Half of 52 =
  13. 13.Double 98 =
  14. 14.Half of 194 =
  15. 15.Half of 128 =
  16. 16.Double 33 =
  17. 17.Double 47 =
  18. 18.Double 58 =
  19. 19.Half of 178 =
  20. 20.Half of 114 =
  21. 21.Half of 32 =
  22. 22.Double 52 =
  23. 23.Double 35 =
  24. 24.Double 51 =
  25. 25.Half of 44 =
  26. 26.Half of 104 =
  27. 27.Double 41 =
  28. 28.Half of 56 =
  29. 29.Half of 12 =
  30. 30.Double 91 =
  31. 31.Double 29 =
  32. 32.Half of 66 =
  33. 33.Half of 106 =
  34. 34.Double 77 =
  35. 35.Double 59 =
  36. 36.Double 57 =
  37. 37.Double 23 =
  38. 38.Half of 164 =
  39. 39.Half of 182 =
  40. 40.Double 46 =

Answer key

  1. 98
  2. 81
  3. 198
  4. 47
  5. 146
  6. 86
  7. 58
  8. 172
  9. 26
  10. 42
  11. 21
  12. 26
  13. 196
  14. 97
  15. 64
  16. 66
  17. 94
  18. 116
  19. 89
  20. 57
  21. 16
  22. 104
  23. 70
  24. 102
  25. 22
  26. 52
  27. 82
  28. 28
  29. 6
  30. 182
  31. 58
  32. 33
  33. 53
  34. 154
  35. 118
  36. 114
  37. 46
  38. 82
  39. 91
  40. 92

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