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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 224 · 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 66 =
  2. 2.Half of 116 =
  3. 3.Half of 42 =
  4. 4.Half of 62 =
  5. 5.Double 84 =
  6. 6.Double 51 =
  7. 7.Half of 124 =
  8. 8.Double 52 =
  9. 9.Double 63 =
  10. 10.Double 44 =
  11. 11.Double 43 =
  12. 12.Double 21 =
  13. 13.Double 34 =
  14. 14.Half of 158 =
  15. 15.Double 38 =
  16. 16.Double 88 =
  17. 17.Half of 14 =
  18. 18.Double 83 =
  19. 19.Double 56 =
  20. 20.Half of 96 =
  21. 21.Double 79 =
  22. 22.Double 64 =
  23. 23.Half of 22 =
  24. 24.Half of 38 =
  25. 25.Double 29 =
  26. 26.Half of 56 =
  27. 27.Double 23 =
  28. 28.Half of 136 =
  29. 29.Half of 126 =
  30. 30.Double 49 =
  31. 31.Double 42 =
  32. 32.Double 92 =
  33. 33.Double 27 =
  34. 34.Double 72 =
  35. 35.Double 31 =
  36. 36.Double 85 =
  37. 37.Half of 94 =
  38. 38.Half of 132 =
  39. 39.Half of 192 =
  40. 40.Half of 74 =

Answer key

  1. 33
  2. 58
  3. 21
  4. 31
  5. 168
  6. 102
  7. 62
  8. 104
  9. 126
  10. 88
  11. 86
  12. 42
  13. 68
  14. 79
  15. 76
  16. 176
  17. 7
  18. 166
  19. 112
  20. 48
  21. 158
  22. 128
  23. 11
  24. 19
  25. 58
  26. 28
  27. 46
  28. 68
  29. 63
  30. 98
  31. 84
  32. 184
  33. 54
  34. 144
  35. 62
  36. 170
  37. 47
  38. 66
  39. 96
  40. 37

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