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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 267 · 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 154 =
  2. 2.Half of 144 =
  3. 3.Half of 142 =
  4. 4.Half of 42 =
  5. 5.Double 89 =
  6. 6.Double 34 =
  7. 7.Double 81 =
  8. 8.Double 19 =
  9. 9.Double 77 =
  10. 10.Double 95 =
  11. 11.Half of 32 =
  12. 12.Double 56 =
  13. 13.Half of 182 =
  14. 14.Half of 96 =
  15. 15.Double 35 =
  16. 16.Double 44 =
  17. 17.Double 84 =
  18. 18.Double 18 =
  19. 19.Half of 192 =
  20. 20.Half of 168 =
  21. 21.Half of 128 =
  22. 22.Double 41 =
  23. 23.Half of 172 =
  24. 24.Half of 132 =
  25. 25.Half of 78 =
  26. 26.Half of 188 =
  27. 27.Half of 152 =
  28. 28.Double 16 =
  29. 29.Double 21 =
  30. 30.Double 97 =
  31. 31.Double 32 =
  32. 32.Double 86 =
  33. 33.Double 31 =
  34. 34.Half of 18 =
  35. 35.Half of 58 =
  36. 36.Double 78 =
  37. 37.Half of 158 =
  38. 38.Double 37 =
  39. 39.Double 98 =
  40. 40.Half of 162 =

Answer key

  1. 77
  2. 72
  3. 71
  4. 21
  5. 178
  6. 68
  7. 162
  8. 38
  9. 154
  10. 190
  11. 16
  12. 112
  13. 91
  14. 48
  15. 70
  16. 88
  17. 168
  18. 36
  19. 96
  20. 84
  21. 64
  22. 82
  23. 86
  24. 66
  25. 39
  26. 94
  27. 76
  28. 32
  29. 42
  30. 194
  31. 64
  32. 172
  33. 62
  34. 9
  35. 29
  36. 156
  37. 79
  38. 74
  39. 196
  40. 81

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