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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 632 · 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 92 =
  2. 2.Half of 162 =
  3. 3.Double 89 =
  4. 4.Double 91 =
  5. 5.Double 22 =
  6. 6.Half of 194 =
  7. 7.Double 64 =
  8. 8.Double 71 =
  9. 9.Double 96 =
  10. 10.Double 17 =
  11. 11.Half of 178 =
  12. 12.Double 97 =
  13. 13.Half of 154 =
  14. 14.Double 35 =
  15. 15.Half of 102 =
  16. 16.Double 33 =
  17. 17.Half of 196 =
  18. 18.Double 15 =
  19. 19.Half of 116 =
  20. 20.Half of 88 =
  21. 21.Half of 46 =
  22. 22.Double 14 =
  23. 23.Double 65 =
  24. 24.Half of 146 =
  25. 25.Double 56 =
  26. 26.Double 72 =
  27. 27.Double 63 =
  28. 28.Double 76 =
  29. 29.Double 27 =
  30. 30.Half of 52 =
  31. 31.Half of 48 =
  32. 32.Double 51 =
  33. 33.Half of 54 =
  34. 34.Half of 72 =
  35. 35.Half of 174 =
  36. 36.Half of 94 =
  37. 37.Double 73 =
  38. 38.Double 86 =
  39. 39.Double 26 =
  40. 40.Double 54 =

Answer key

  1. 46
  2. 81
  3. 178
  4. 182
  5. 44
  6. 97
  7. 128
  8. 142
  9. 192
  10. 34
  11. 89
  12. 194
  13. 77
  14. 70
  15. 51
  16. 66
  17. 98
  18. 30
  19. 58
  20. 44
  21. 23
  22. 28
  23. 130
  24. 73
  25. 112
  26. 144
  27. 126
  28. 152
  29. 54
  30. 26
  31. 24
  32. 102
  33. 27
  34. 36
  35. 87
  36. 47
  37. 146
  38. 172
  39. 52
  40. 108

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