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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 342 · 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 32 =
  2. 2.Double 56 =
  3. 3.Half of 176 =
  4. 4.Double 27 =
  5. 5.Half of 96 =
  6. 6.Half of 68 =
  7. 7.Half of 138 =
  8. 8.Double 77 =
  9. 9.Half of 114 =
  10. 10.Half of 84 =
  11. 11.Double 47 =
  12. 12.Half of 126 =
  13. 13.Double 87 =
  14. 14.Half of 102 =
  15. 15.Half of 74 =
  16. 16.Double 61 =
  17. 17.Half of 72 =
  18. 18.Double 85 =
  19. 19.Half of 132 =
  20. 20.Double 31 =
  21. 21.Half of 182 =
  22. 22.Double 55 =
  23. 23.Double 26 =
  24. 24.Half of 42 =
  25. 25.Half of 16 =
  26. 26.Double 52 =
  27. 27.Half of 66 =
  28. 28.Double 92 =
  29. 29.Half of 62 =
  30. 30.Double 63 =
  31. 31.Double 58 =
  32. 32.Half of 116 =
  33. 33.Half of 22 =
  34. 34.Half of 154 =
  35. 35.Double 99 =
  36. 36.Double 14 =
  37. 37.Half of 162 =
  38. 38.Double 71 =
  39. 39.Double 95 =
  40. 40.Half of 76 =

Answer key

  1. 64
  2. 112
  3. 88
  4. 54
  5. 48
  6. 34
  7. 69
  8. 154
  9. 57
  10. 42
  11. 94
  12. 63
  13. 174
  14. 51
  15. 37
  16. 122
  17. 36
  18. 170
  19. 66
  20. 62
  21. 91
  22. 110
  23. 52
  24. 21
  25. 8
  26. 104
  27. 33
  28. 184
  29. 31
  30. 126
  31. 116
  32. 58
  33. 11
  34. 77
  35. 198
  36. 28
  37. 81
  38. 142
  39. 190
  40. 38

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