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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 124 · 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 152 =
  2. 2.Half of 56 =
  3. 3.Double 46 =
  4. 4.Double 12 =
  5. 5.Half of 22 =
  6. 6.Half of 58 =
  7. 7.Double 44 =
  8. 8.Half of 142 =
  9. 9.Double 31 =
  10. 10.Half of 162 =
  11. 11.Double 28 =
  12. 12.Double 74 =
  13. 13.Half of 182 =
  14. 14.Half of 38 =
  15. 15.Half of 34 =
  16. 16.Double 94 =
  17. 17.Half of 128 =
  18. 18.Double 76 =
  19. 19.Double 29 =
  20. 20.Double 51 =
  21. 21.Double 15 =
  22. 22.Double 91 =
  23. 23.Double 73 =
  24. 24.Double 81 =
  25. 25.Double 61 =
  26. 26.Half of 108 =
  27. 27.Double 67 =
  28. 28.Double 89 =
  29. 29.Half of 98 =
  30. 30.Half of 32 =
  31. 31.Half of 84 =
  32. 32.Half of 112 =
  33. 33.Half of 102 =
  34. 34.Half of 52 =
  35. 35.Half of 62 =
  36. 36.Half of 136 =
  37. 37.Half of 188 =
  38. 38.Double 33 =
  39. 39.Half of 88 =
  40. 40.Double 98 =

Answer key

  1. 76
  2. 28
  3. 92
  4. 24
  5. 11
  6. 29
  7. 88
  8. 71
  9. 62
  10. 81
  11. 56
  12. 148
  13. 91
  14. 19
  15. 17
  16. 188
  17. 64
  18. 152
  19. 58
  20. 102
  21. 30
  22. 182
  23. 146
  24. 162
  25. 122
  26. 54
  27. 134
  28. 178
  29. 49
  30. 16
  31. 42
  32. 56
  33. 51
  34. 26
  35. 31
  36. 68
  37. 94
  38. 66
  39. 44
  40. 196

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