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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 656 · 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 128 =
  2. 2.Double 59 =
  3. 3.Double 21 =
  4. 4.Half of 28 =
  5. 5.Double 96 =
  6. 6.Double 41 =
  7. 7.Double 93 =
  8. 8.Half of 48 =
  9. 9.Half of 92 =
  10. 10.Double 42 =
  11. 11.Half of 38 =
  12. 12.Double 12 =
  13. 13.Double 49 =
  14. 14.Double 47 =
  15. 15.Half of 68 =
  16. 16.Double 11 =
  17. 17.Half of 134 =
  18. 18.Double 62 =
  19. 19.Double 32 =
  20. 20.Double 99 =
  21. 21.Half of 46 =
  22. 22.Half of 106 =
  23. 23.Double 91 =
  24. 24.Double 48 =
  25. 25.Double 68 =
  26. 26.Double 22 =
  27. 27.Double 63 =
  28. 28.Half of 176 =
  29. 29.Double 57 =
  30. 30.Double 15 =
  31. 31.Double 98 =
  32. 32.Half of 184 =
  33. 33.Double 61 =
  34. 34.Double 34 =
  35. 35.Half of 62 =
  36. 36.Double 74 =
  37. 37.Half of 32 =
  38. 38.Half of 24 =
  39. 39.Half of 56 =
  40. 40.Half of 52 =

Answer key

  1. 64
  2. 118
  3. 42
  4. 14
  5. 192
  6. 82
  7. 186
  8. 24
  9. 46
  10. 84
  11. 19
  12. 24
  13. 98
  14. 94
  15. 34
  16. 22
  17. 67
  18. 124
  19. 64
  20. 198
  21. 23
  22. 53
  23. 182
  24. 96
  25. 136
  26. 44
  27. 126
  28. 88
  29. 114
  30. 30
  31. 196
  32. 92
  33. 122
  34. 68
  35. 31
  36. 148
  37. 16
  38. 12
  39. 28
  40. 26

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