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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 50 · 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 62 =
  2. 2.Half of 192 =
  3. 3.Double 47 =
  4. 4.Half of 142 =
  5. 5.Half of 84 =
  6. 6.Double 71 =
  7. 7.Half of 98 =
  8. 8.Double 88 =
  9. 9.Double 72 =
  10. 10.Half of 162 =
  11. 11.Double 92 =
  12. 12.Half of 92 =
  13. 13.Double 94 =
  14. 14.Half of 178 =
  15. 15.Half of 88 =
  16. 16.Half of 176 =
  17. 17.Half of 124 =
  18. 18.Double 91 =
  19. 19.Double 17 =
  20. 20.Double 51 =
  21. 21.Double 42 =
  22. 22.Half of 116 =
  23. 23.Double 46 =
  24. 24.Double 21 =
  25. 25.Half of 42 =
  26. 26.Half of 26 =
  27. 27.Double 74 =
  28. 28.Half of 136 =
  29. 29.Double 87 =
  30. 30.Double 81 =
  31. 31.Double 29 =
  32. 32.Double 13 =
  33. 33.Double 23 =
  34. 34.Half of 126 =
  35. 35.Double 75 =
  36. 36.Half of 172 =
  37. 37.Double 73 =
  38. 38.Half of 44 =
  39. 39.Half of 102 =
  40. 40.Half of 148 =

Answer key

  1. 31
  2. 96
  3. 94
  4. 71
  5. 42
  6. 142
  7. 49
  8. 176
  9. 144
  10. 81
  11. 184
  12. 46
  13. 188
  14. 89
  15. 44
  16. 88
  17. 62
  18. 182
  19. 34
  20. 102
  21. 84
  22. 58
  23. 92
  24. 42
  25. 21
  26. 13
  27. 148
  28. 68
  29. 174
  30. 162
  31. 58
  32. 26
  33. 46
  34. 63
  35. 150
  36. 86
  37. 146
  38. 22
  39. 51
  40. 74

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