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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 134 · 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 39 =
  2. 2.Half of 176 =
  3. 3.Half of 174 =
  4. 4.Double 46 =
  5. 5.Half of 114 =
  6. 6.Half of 14 =
  7. 7.Double 16 =
  8. 8.Double 88 =
  9. 9.Half of 182 =
  10. 10.Half of 192 =
  11. 11.Half of 152 =
  12. 12.Half of 126 =
  13. 13.Double 61 =
  14. 14.Half of 68 =
  15. 15.Double 44 =
  16. 16.Double 62 =
  17. 17.Double 99 =
  18. 18.Half of 22 =
  19. 19.Double 92 =
  20. 20.Half of 42 =
  21. 21.Half of 136 =
  22. 22.Half of 64 =
  23. 23.Half of 12 =
  24. 24.Half of 74 =
  25. 25.Double 51 =
  26. 26.Double 11 =
  27. 27.Double 64 =
  28. 28.Double 35 =
  29. 29.Half of 92 =
  30. 30.Half of 24 =
  31. 31.Half of 62 =
  32. 32.Double 63 =
  33. 33.Double 23 =
  34. 34.Half of 118 =
  35. 35.Double 31 =
  36. 36.Double 86 =
  37. 37.Half of 162 =
  38. 38.Double 32 =
  39. 39.Double 94 =
  40. 40.Double 13 =

Answer key

  1. 78
  2. 88
  3. 87
  4. 92
  5. 57
  6. 7
  7. 32
  8. 176
  9. 91
  10. 96
  11. 76
  12. 63
  13. 122
  14. 34
  15. 88
  16. 124
  17. 198
  18. 11
  19. 184
  20. 21
  21. 68
  22. 32
  23. 6
  24. 37
  25. 102
  26. 22
  27. 128
  28. 70
  29. 46
  30. 12
  31. 31
  32. 126
  33. 46
  34. 59
  35. 62
  36. 172
  37. 81
  38. 64
  39. 188
  40. 26

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