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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 755 · 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 24 =
  2. 2.Half of 166 =
  3. 3.Double 98 =
  4. 4.Double 94 =
  5. 5.Half of 172 =
  6. 6.Half of 104 =
  7. 7.Half of 26 =
  8. 8.Double 59 =
  9. 9.Half of 196 =
  10. 10.Half of 22 =
  11. 11.Double 89 =
  12. 12.Double 87 =
  13. 13.Half of 38 =
  14. 14.Double 72 =
  15. 15.Double 36 =
  16. 16.Half of 28 =
  17. 17.Double 83 =
  18. 18.Double 35 =
  19. 19.Half of 72 =
  20. 20.Half of 114 =
  21. 21.Double 38 =
  22. 22.Double 61 =
  23. 23.Double 73 =
  24. 24.Double 21 =
  25. 25.Half of 134 =
  26. 26.Double 75 =
  27. 27.Half of 146 =
  28. 28.Double 64 =
  29. 29.Double 32 =
  30. 30.Double 68 =
  31. 31.Double 91 =
  32. 32.Half of 118 =
  33. 33.Half of 78 =
  34. 34.Double 13 =
  35. 35.Half of 124 =
  36. 36.Double 65 =
  37. 37.Half of 64 =
  38. 38.Half of 74 =
  39. 39.Double 23 =
  40. 40.Half of 54 =

Answer key

  1. 48
  2. 83
  3. 196
  4. 188
  5. 86
  6. 52
  7. 13
  8. 118
  9. 98
  10. 11
  11. 178
  12. 174
  13. 19
  14. 144
  15. 72
  16. 14
  17. 166
  18. 70
  19. 36
  20. 57
  21. 76
  22. 122
  23. 146
  24. 42
  25. 67
  26. 150
  27. 73
  28. 128
  29. 64
  30. 136
  31. 182
  32. 59
  33. 39
  34. 26
  35. 62
  36. 130
  37. 32
  38. 37
  39. 46
  40. 27

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