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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 229 · 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 73 =
  2. 2.Double 44 =
  3. 3.Half of 22 =
  4. 4.Half of 136 =
  5. 5.Double 59 =
  6. 6.Half of 124 =
  7. 7.Double 82 =
  8. 8.Half of 102 =
  9. 9.Double 69 =
  10. 10.Double 94 =
  11. 11.Half of 84 =
  12. 12.Half of 42 =
  13. 13.Half of 76 =
  14. 14.Half of 48 =
  15. 15.Double 41 =
  16. 16.Half of 16 =
  17. 17.Double 37 =
  18. 18.Half of 172 =
  19. 19.Double 85 =
  20. 20.Double 83 =
  21. 21.Double 39 =
  22. 22.Double 17 =
  23. 23.Half of 18 =
  24. 24.Half of 192 =
  25. 25.Half of 62 =
  26. 26.Half of 56 =
  27. 27.Half of 72 =
  28. 28.Double 74 =
  29. 29.Half of 158 =
  30. 30.Double 13 =
  31. 31.Half of 98 =
  32. 32.Half of 52 =
  33. 33.Double 35 =
  34. 34.Double 62 =
  35. 35.Double 18 =
  36. 36.Double 68 =
  37. 37.Half of 118 =
  38. 38.Double 86 =
  39. 39.Double 11 =
  40. 40.Double 32 =

Answer key

  1. 146
  2. 88
  3. 11
  4. 68
  5. 118
  6. 62
  7. 164
  8. 51
  9. 138
  10. 188
  11. 42
  12. 21
  13. 38
  14. 24
  15. 82
  16. 8
  17. 74
  18. 86
  19. 170
  20. 166
  21. 78
  22. 34
  23. 9
  24. 96
  25. 31
  26. 28
  27. 36
  28. 148
  29. 79
  30. 26
  31. 49
  32. 26
  33. 70
  34. 124
  35. 36
  36. 136
  37. 59
  38. 172
  39. 22
  40. 64

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