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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 159 · 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 98 =
  2. 2.Half of 64 =
  3. 3.Half of 56 =
  4. 4.Half of 114 =
  5. 5.Double 61 =
  6. 6.Half of 86 =
  7. 7.Double 58 =
  8. 8.Half of 74 =
  9. 9.Double 31 =
  10. 10.Double 27 =
  11. 11.Double 53 =
  12. 12.Double 67 =
  13. 13.Double 57 =
  14. 14.Double 26 =
  15. 15.Double 21 =
  16. 16.Half of 178 =
  17. 17.Half of 44 =
  18. 18.Half of 22 =
  19. 19.Double 83 =
  20. 20.Half of 122 =
  21. 21.Half of 196 =
  22. 22.Half of 96 =
  23. 23.Double 66 =
  24. 24.Half of 132 =
  25. 25.Half of 68 =
  26. 26.Double 28 =
  27. 27.Half of 62 =
  28. 28.Double 25 =
  29. 29.Double 91 =
  30. 30.Double 65 =
  31. 31.Half of 194 =
  32. 32.Double 13 =
  33. 33.Half of 164 =
  34. 34.Half of 46 =
  35. 35.Double 52 =
  36. 36.Double 99 =
  37. 37.Double 96 =
  38. 38.Half of 72 =
  39. 39.Double 54 =
  40. 40.Double 15 =

Answer key

  1. 49
  2. 32
  3. 28
  4. 57
  5. 122
  6. 43
  7. 116
  8. 37
  9. 62
  10. 54
  11. 106
  12. 134
  13. 114
  14. 52
  15. 42
  16. 89
  17. 22
  18. 11
  19. 166
  20. 61
  21. 98
  22. 48
  23. 132
  24. 66
  25. 34
  26. 56
  27. 31
  28. 50
  29. 182
  30. 130
  31. 97
  32. 26
  33. 82
  34. 23
  35. 104
  36. 198
  37. 192
  38. 36
  39. 108
  40. 30

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