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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 84 · 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.Double 36 =
  2. 2.Double 21 =
  3. 3.Half of 116 =
  4. 4.Double 68 =
  5. 5.Double 27 =
  6. 6.Double 87 =
  7. 7.Half of 68 =
  8. 8.Double 98 =
  9. 9.Half of 62 =
  10. 10.Double 97 =
  11. 11.Double 88 =
  12. 12.Half of 114 =
  13. 13.Half of 96 =
  14. 14.Double 23 =
  15. 15.Half of 178 =
  16. 16.Double 44 =
  17. 17.Double 73 =
  18. 18.Half of 186 =
  19. 19.Half of 112 =
  20. 20.Double 84 =
  21. 21.Half of 122 =
  22. 22.Half of 188 =
  23. 23.Double 26 =
  24. 24.Half of 136 =
  25. 25.Half of 44 =
  26. 26.Double 62 =
  27. 27.Double 64 =
  28. 28.Double 49 =
  29. 29.Half of 38 =
  30. 30.Double 67 =
  31. 31.Double 91 =
  32. 32.Double 33 =
  33. 33.Half of 102 =
  34. 34.Half of 184 =
  35. 35.Double 61 =
  36. 36.Double 89 =
  37. 37.Half of 92 =
  38. 38.Half of 124 =
  39. 39.Double 24 =
  40. 40.Double 71 =

Answer key

  1. 72
  2. 42
  3. 58
  4. 136
  5. 54
  6. 174
  7. 34
  8. 196
  9. 31
  10. 194
  11. 176
  12. 57
  13. 48
  14. 46
  15. 89
  16. 88
  17. 146
  18. 93
  19. 56
  20. 168
  21. 61
  22. 94
  23. 52
  24. 68
  25. 22
  26. 124
  27. 128
  28. 98
  29. 19
  30. 134
  31. 182
  32. 66
  33. 51
  34. 92
  35. 122
  36. 178
  37. 46
  38. 62
  39. 48
  40. 142

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