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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 65 · 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 126 =
  2. 2.Half of 186 =
  3. 3.Half of 176 =
  4. 4.Double 73 =
  5. 5.Double 48 =
  6. 6.Double 21 =
  7. 7.Half of 34 =
  8. 8.Half of 46 =
  9. 9.Half of 106 =
  10. 10.Double 12 =
  11. 11.Double 19 =
  12. 12.Double 79 =
  13. 13.Half of 78 =
  14. 14.Half of 142 =
  15. 15.Double 16 =
  16. 16.Half of 102 =
  17. 17.Half of 14 =
  18. 18.Double 31 =
  19. 19.Double 94 =
  20. 20.Half of 136 =
  21. 21.Half of 152 =
  22. 22.Double 87 =
  23. 23.Double 25 =
  24. 24.Half of 114 =
  25. 25.Double 56 =
  26. 26.Double 95 =
  27. 27.Half of 112 =
  28. 28.Double 53 =
  29. 29.Half of 188 =
  30. 30.Double 17 =
  31. 31.Double 67 =
  32. 32.Double 81 =
  33. 33.Half of 64 =
  34. 34.Double 72 =
  35. 35.Double 99 =
  36. 36.Half of 52 =
  37. 37.Half of 22 =
  38. 38.Double 36 =
  39. 39.Double 58 =
  40. 40.Half of 74 =

Answer key

  1. 63
  2. 93
  3. 88
  4. 146
  5. 96
  6. 42
  7. 17
  8. 23
  9. 53
  10. 24
  11. 38
  12. 158
  13. 39
  14. 71
  15. 32
  16. 51
  17. 7
  18. 62
  19. 188
  20. 68
  21. 76
  22. 174
  23. 50
  24. 57
  25. 112
  26. 190
  27. 56
  28. 106
  29. 94
  30. 34
  31. 134
  32. 162
  33. 32
  34. 144
  35. 198
  36. 26
  37. 11
  38. 72
  39. 116
  40. 37

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