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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 392 · 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 48 =
  2. 2.Half of 146 =
  3. 3.Double 74 =
  4. 4.Double 38 =
  5. 5.Half of 142 =
  6. 6.Double 41 =
  7. 7.Half of 128 =
  8. 8.Half of 64 =
  9. 9.Double 98 =
  10. 10.Half of 102 =
  11. 11.Double 96 =
  12. 12.Double 26 =
  13. 13.Half of 32 =
  14. 14.Half of 152 =
  15. 15.Half of 158 =
  16. 16.Half of 22 =
  17. 17.Half of 156 =
  18. 18.Double 62 =
  19. 19.Double 87 =
  20. 20.Half of 174 =
  21. 21.Half of 52 =
  22. 22.Half of 108 =
  23. 23.Double 32 =
  24. 24.Double 36 =
  25. 25.Double 58 =
  26. 26.Double 81 =
  27. 27.Double 18 =
  28. 28.Double 15 =
  29. 29.Double 42 =
  30. 30.Double 57 =
  31. 31.Double 72 =
  32. 32.Double 13 =
  33. 33.Double 47 =
  34. 34.Double 94 =
  35. 35.Double 16 =
  36. 36.Double 56 =
  37. 37.Half of 104 =
  38. 38.Double 24 =
  39. 39.Half of 96 =
  40. 40.Double 97 =

Answer key

  1. 96
  2. 73
  3. 148
  4. 76
  5. 71
  6. 82
  7. 64
  8. 32
  9. 196
  10. 51
  11. 192
  12. 52
  13. 16
  14. 76
  15. 79
  16. 11
  17. 78
  18. 124
  19. 174
  20. 87
  21. 26
  22. 54
  23. 64
  24. 72
  25. 116
  26. 162
  27. 36
  28. 30
  29. 84
  30. 114
  31. 144
  32. 26
  33. 94
  34. 188
  35. 32
  36. 112
  37. 52
  38. 48
  39. 48
  40. 194

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