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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 146 · 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 23 =
  2. 2.Half of 144 =
  3. 3.Double 46 =
  4. 4.Double 25 =
  5. 5.Half of 104 =
  6. 6.Half of 42 =
  7. 7.Double 99 =
  8. 8.Double 86 =
  9. 9.Half of 26 =
  10. 10.Double 84 =
  11. 11.Half of 194 =
  12. 12.Half of 92 =
  13. 13.Half of 198 =
  14. 14.Double 21 =
  15. 15.Double 79 =
  16. 16.Double 14 =
  17. 17.Double 62 =
  18. 18.Double 64 =
  19. 19.Double 76 =
  20. 20.Double 34 =
  21. 21.Double 71 =
  22. 22.Half of 152 =
  23. 23.Double 56 =
  24. 24.Half of 62 =
  25. 25.Double 17 =
  26. 26.Half of 98 =
  27. 27.Double 53 =
  28. 28.Double 13 =
  29. 29.Double 33 =
  30. 30.Double 89 =
  31. 31.Double 19 =
  32. 32.Double 54 =
  33. 33.Double 74 =
  34. 34.Double 68 =
  35. 35.Double 67 =
  36. 36.Double 88 =
  37. 37.Half of 136 =
  38. 38.Double 61 =
  39. 39.Half of 78 =
  40. 40.Double 57 =

Answer key

  1. 46
  2. 72
  3. 92
  4. 50
  5. 52
  6. 21
  7. 198
  8. 172
  9. 13
  10. 168
  11. 97
  12. 46
  13. 99
  14. 42
  15. 158
  16. 28
  17. 124
  18. 128
  19. 152
  20. 68
  21. 142
  22. 76
  23. 112
  24. 31
  25. 34
  26. 49
  27. 106
  28. 26
  29. 66
  30. 178
  31. 38
  32. 108
  33. 148
  34. 136
  35. 134
  36. 176
  37. 68
  38. 122
  39. 39
  40. 114

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