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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 834 · 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 76 =
  2. 2.Double 83 =
  3. 3.Half of 154 =
  4. 4.Half of 86 =
  5. 5.Half of 36 =
  6. 6.Double 33 =
  7. 7.Double 94 =
  8. 8.Double 21 =
  9. 9.Half of 52 =
  10. 10.Half of 194 =
  11. 11.Double 17 =
  12. 12.Double 57 =
  13. 13.Half of 34 =
  14. 14.Double 92 =
  15. 15.Half of 142 =
  16. 16.Double 93 =
  17. 17.Double 25 =
  18. 18.Double 35 =
  19. 19.Double 26 =
  20. 20.Half of 178 =
  21. 21.Double 96 =
  22. 22.Double 23 =
  23. 23.Double 86 =
  24. 24.Half of 88 =
  25. 25.Double 18 =
  26. 26.Double 79 =
  27. 27.Double 71 =
  28. 28.Double 49 =
  29. 29.Half of 164 =
  30. 30.Double 41 =
  31. 31.Double 51 =
  32. 32.Half of 126 =
  33. 33.Half of 198 =
  34. 34.Double 55 =
  35. 35.Half of 96 =
  36. 36.Double 65 =
  37. 37.Half of 186 =
  38. 38.Double 59 =
  39. 39.Double 27 =
  40. 40.Half of 32 =

Answer key

  1. 152
  2. 166
  3. 77
  4. 43
  5. 18
  6. 66
  7. 188
  8. 42
  9. 26
  10. 97
  11. 34
  12. 114
  13. 17
  14. 184
  15. 71
  16. 186
  17. 50
  18. 70
  19. 52
  20. 89
  21. 192
  22. 46
  23. 172
  24. 44
  25. 36
  26. 158
  27. 142
  28. 98
  29. 82
  30. 82
  31. 102
  32. 63
  33. 99
  34. 110
  35. 48
  36. 130
  37. 93
  38. 118
  39. 54
  40. 16

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