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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 459 · 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 144 =
  2. 2.Half of 106 =
  3. 3.Double 22 =
  4. 4.Half of 92 =
  5. 5.Half of 78 =
  6. 6.Half of 198 =
  7. 7.Half of 74 =
  8. 8.Double 54 =
  9. 9.Half of 132 =
  10. 10.Half of 118 =
  11. 11.Double 64 =
  12. 12.Double 24 =
  13. 13.Half of 172 =
  14. 14.Double 19 =
  15. 15.Half of 112 =
  16. 16.Half of 142 =
  17. 17.Double 31 =
  18. 18.Double 67 =
  19. 19.Half of 126 =
  20. 20.Half of 62 =
  21. 21.Half of 12 =
  22. 22.Half of 38 =
  23. 23.Half of 156 =
  24. 24.Double 84 =
  25. 25.Double 88 =
  26. 26.Double 75 =
  27. 27.Double 94 =
  28. 28.Half of 68 =
  29. 29.Half of 152 =
  30. 30.Double 41 =
  31. 31.Half of 56 =
  32. 32.Double 62 =
  33. 33.Double 12 =
  34. 34.Double 98 =
  35. 35.Half of 34 =
  36. 36.Half of 182 =
  37. 37.Half of 22 =
  38. 38.Double 36 =
  39. 39.Double 51 =
  40. 40.Double 32 =

Answer key

  1. 72
  2. 53
  3. 44
  4. 46
  5. 39
  6. 99
  7. 37
  8. 108
  9. 66
  10. 59
  11. 128
  12. 48
  13. 86
  14. 38
  15. 56
  16. 71
  17. 62
  18. 134
  19. 63
  20. 31
  21. 6
  22. 19
  23. 78
  24. 168
  25. 176
  26. 150
  27. 188
  28. 34
  29. 76
  30. 82
  31. 28
  32. 124
  33. 24
  34. 196
  35. 17
  36. 91
  37. 11
  38. 72
  39. 102
  40. 64

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