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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 11 · 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 188 =
  3. 3.Double 64 =
  4. 4.Half of 44 =
  5. 5.Double 24 =
  6. 6.Half of 192 =
  7. 7.Half of 162 =
  8. 8.Half of 152 =
  9. 9.Double 26 =
  10. 10.Half of 112 =
  11. 11.Half of 182 =
  12. 12.Half of 128 =
  13. 13.Double 86 =
  14. 14.Half of 64 =
  15. 15.Double 71 =
  16. 16.Double 88 =
  17. 17.Half of 186 =
  18. 18.Half of 42 =
  19. 19.Half of 136 =
  20. 20.Double 51 =
  21. 21.Half of 62 =
  22. 22.Half of 106 =
  23. 23.Half of 146 =
  24. 24.Double 56 =
  25. 25.Half of 92 =
  26. 26.Double 84 =
  27. 27.Double 12 =
  28. 28.Half of 18 =
  29. 29.Double 62 =
  30. 30.Half of 156 =
  31. 31.Double 36 =
  32. 32.Double 97 =
  33. 33.Half of 144 =
  34. 34.Half of 132 =
  35. 35.Double 46 =
  36. 36.Double 58 =
  37. 37.Double 65 =
  38. 38.Double 59 =
  39. 39.Double 29 =
  40. 40.Half of 16 =

Answer key

  1. 49
  2. 94
  3. 128
  4. 22
  5. 48
  6. 96
  7. 81
  8. 76
  9. 52
  10. 56
  11. 91
  12. 64
  13. 172
  14. 32
  15. 142
  16. 176
  17. 93
  18. 21
  19. 68
  20. 102
  21. 31
  22. 53
  23. 73
  24. 112
  25. 46
  26. 168
  27. 24
  28. 9
  29. 124
  30. 78
  31. 72
  32. 194
  33. 72
  34. 66
  35. 92
  36. 116
  37. 130
  38. 118
  39. 58
  40. 8

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