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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 221 · 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.Half of 196 =
  2. 2.Double 16 =
  3. 3.Half of 198 =
  4. 4.Half of 176 =
  5. 5.Half of 162 =
  6. 6.Half of 116 =
  7. 7.Double 31 =
  8. 8.Double 42 =
  9. 9.Half of 138 =
  10. 10.Half of 22 =
  11. 11.Double 69 =
  12. 12.Half of 68 =
  13. 13.Double 61 =
  14. 14.Double 28 =
  15. 15.Half of 164 =
  16. 16.Half of 132 =
  17. 17.Half of 32 =
  18. 18.Double 38 =
  19. 19.Half of 194 =
  20. 20.Double 62 =
  21. 21.Double 11 =
  22. 22.Half of 36 =
  23. 23.Double 79 =
  24. 24.Half of 142 =
  25. 25.Double 44 =
  26. 26.Double 95 =
  27. 27.Half of 136 =
  28. 28.Double 63 =
  29. 29.Double 59 =
  30. 30.Half of 152 =
  31. 31.Half of 126 =
  32. 32.Double 21 =
  33. 33.Double 35 =
  34. 34.Double 81 =
  35. 35.Double 15 =
  36. 36.Half of 62 =
  37. 37.Double 65 =
  38. 38.Double 17 =
  39. 39.Double 25 =
  40. 40.Double 24 =

Answer key

  1. 98
  2. 32
  3. 99
  4. 88
  5. 81
  6. 58
  7. 62
  8. 84
  9. 69
  10. 11
  11. 138
  12. 34
  13. 122
  14. 56
  15. 82
  16. 66
  17. 16
  18. 76
  19. 97
  20. 124
  21. 22
  22. 18
  23. 158
  24. 71
  25. 88
  26. 190
  27. 68
  28. 126
  29. 118
  30. 76
  31. 63
  32. 42
  33. 70
  34. 162
  35. 30
  36. 31
  37. 130
  38. 34
  39. 50
  40. 48

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