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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 494 · 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 46 =
  2. 2.Half of 148 =
  3. 3.Half of 14 =
  4. 4.Double 79 =
  5. 5.Half of 32 =
  6. 6.Double 89 =
  7. 7.Half of 194 =
  8. 8.Double 13 =
  9. 9.Double 81 =
  10. 10.Half of 104 =
  11. 11.Half of 182 =
  12. 12.Half of 62 =
  13. 13.Double 66 =
  14. 14.Double 83 =
  15. 15.Half of 54 =
  16. 16.Double 88 =
  17. 17.Half of 192 =
  18. 18.Half of 74 =
  19. 19.Half of 122 =
  20. 20.Double 58 =
  21. 21.Half of 178 =
  22. 22.Half of 72 =
  23. 23.Half of 172 =
  24. 24.Half of 166 =
  25. 25.Half of 112 =
  26. 26.Double 16 =
  27. 27.Double 87 =
  28. 28.Double 73 =
  29. 29.Double 17 =
  30. 30.Half of 126 =
  31. 31.Half of 156 =
  32. 32.Double 12 =
  33. 33.Half of 128 =
  34. 34.Double 41 =
  35. 35.Double 28 =
  36. 36.Half of 162 =
  37. 37.Double 31 =
  38. 38.Double 59 =
  39. 39.Half of 176 =
  40. 40.Half of 18 =

Answer key

  1. 92
  2. 74
  3. 7
  4. 158
  5. 16
  6. 178
  7. 97
  8. 26
  9. 162
  10. 52
  11. 91
  12. 31
  13. 132
  14. 166
  15. 27
  16. 176
  17. 96
  18. 37
  19. 61
  20. 116
  21. 89
  22. 36
  23. 86
  24. 83
  25. 56
  26. 32
  27. 174
  28. 146
  29. 34
  30. 63
  31. 78
  32. 24
  33. 64
  34. 82
  35. 56
  36. 81
  37. 62
  38. 118
  39. 88
  40. 9

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