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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 376 · 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 33 =
  2. 2.Half of 186 =
  3. 3.Half of 118 =
  4. 4.Double 93 =
  5. 5.Half of 86 =
  6. 6.Half of 122 =
  7. 7.Half of 112 =
  8. 8.Half of 18 =
  9. 9.Half of 64 =
  10. 10.Double 25 =
  11. 11.Half of 126 =
  12. 12.Double 74 =
  13. 13.Double 17 =
  14. 14.Double 29 =
  15. 15.Double 83 =
  16. 16.Double 87 =
  17. 17.Double 54 =
  18. 18.Half of 48 =
  19. 19.Double 68 =
  20. 20.Double 85 =
  21. 21.Half of 106 =
  22. 22.Double 89 =
  23. 23.Double 79 =
  24. 24.Double 46 =
  25. 25.Half of 44 =
  26. 26.Double 99 =
  27. 27.Double 71 =
  28. 28.Double 27 =
  29. 29.Double 49 =
  30. 30.Double 96 =
  31. 31.Half of 114 =
  32. 32.Half of 98 =
  33. 33.Half of 54 =
  34. 34.Double 65 =
  35. 35.Double 97 =
  36. 36.Half of 42 =
  37. 37.Double 91 =
  38. 38.Double 37 =
  39. 39.Double 19 =
  40. 40.Double 16 =

Answer key

  1. 66
  2. 93
  3. 59
  4. 186
  5. 43
  6. 61
  7. 56
  8. 9
  9. 32
  10. 50
  11. 63
  12. 148
  13. 34
  14. 58
  15. 166
  16. 174
  17. 108
  18. 24
  19. 136
  20. 170
  21. 53
  22. 178
  23. 158
  24. 92
  25. 22
  26. 198
  27. 142
  28. 54
  29. 98
  30. 192
  31. 57
  32. 49
  33. 27
  34. 130
  35. 194
  36. 21
  37. 182
  38. 74
  39. 38
  40. 32

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