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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 104 · 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 97 =
  2. 2.Double 35 =
  3. 3.Half of 32 =
  4. 4.Half of 154 =
  5. 5.Half of 186 =
  6. 6.Double 48 =
  7. 7.Double 36 =
  8. 8.Half of 102 =
  9. 9.Double 64 =
  10. 10.Half of 28 =
  11. 11.Half of 52 =
  12. 12.Half of 148 =
  13. 13.Double 51 =
  14. 14.Double 88 =
  15. 15.Half of 192 =
  16. 16.Double 71 =
  17. 17.Double 32 =
  18. 18.Double 74 =
  19. 19.Double 76 =
  20. 20.Half of 44 =
  21. 21.Half of 118 =
  22. 22.Half of 62 =
  23. 23.Half of 198 =
  24. 24.Half of 136 =
  25. 25.Half of 132 =
  26. 26.Double 59 =
  27. 27.Double 77 =
  28. 28.Double 95 =
  29. 29.Double 68 =
  30. 30.Half of 112 =
  31. 31.Half of 184 =
  32. 32.Half of 36 =
  33. 33.Double 16 =
  34. 34.Half of 104 =
  35. 35.Double 94 =
  36. 36.Half of 58 =
  37. 37.Double 84 =
  38. 38.Double 69 =
  39. 39.Half of 176 =
  40. 40.Double 92 =

Answer key

  1. 194
  2. 70
  3. 16
  4. 77
  5. 93
  6. 96
  7. 72
  8. 51
  9. 128
  10. 14
  11. 26
  12. 74
  13. 102
  14. 176
  15. 96
  16. 142
  17. 64
  18. 148
  19. 152
  20. 22
  21. 59
  22. 31
  23. 99
  24. 68
  25. 66
  26. 118
  27. 154
  28. 190
  29. 136
  30. 56
  31. 92
  32. 18
  33. 32
  34. 52
  35. 188
  36. 29
  37. 168
  38. 138
  39. 88
  40. 184

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