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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 2 · 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 192 =
  2. 2.Double 99 =
  3. 3.Half of 126 =
  4. 4.Double 33 =
  5. 5.Half of 52 =
  6. 6.Double 37 =
  7. 7.Half of 196 =
  8. 8.Double 24 =
  9. 9.Half of 154 =
  10. 10.Half of 174 =
  11. 11.Half of 88 =
  12. 12.Double 34 =
  13. 13.Half of 62 =
  14. 14.Double 12 =
  15. 15.Half of 66 =
  16. 16.Double 89 =
  17. 17.Half of 144 =
  18. 18.Half of 122 =
  19. 19.Double 91 =
  20. 20.Half of 18 =
  21. 21.Double 62 =
  22. 22.Half of 136 =
  23. 23.Double 98 =
  24. 24.Half of 152 =
  25. 25.Half of 162 =
  26. 26.Half of 92 =
  27. 27.Double 27 =
  28. 28.Double 18 =
  29. 29.Half of 128 =
  30. 30.Double 73 =
  31. 31.Double 31 =
  32. 32.Double 59 =
  33. 33.Half of 22 =
  34. 34.Half of 32 =
  35. 35.Half of 172 =
  36. 36.Double 96 =
  37. 37.Half of 94 =
  38. 38.Double 21 =
  39. 39.Double 15 =
  40. 40.Half of 12 =

Answer key

  1. 96
  2. 198
  3. 63
  4. 66
  5. 26
  6. 74
  7. 98
  8. 48
  9. 77
  10. 87
  11. 44
  12. 68
  13. 31
  14. 24
  15. 33
  16. 178
  17. 72
  18. 61
  19. 182
  20. 9
  21. 124
  22. 68
  23. 196
  24. 76
  25. 81
  26. 46
  27. 54
  28. 36
  29. 64
  30. 146
  31. 62
  32. 118
  33. 11
  34. 16
  35. 86
  36. 192
  37. 47
  38. 42
  39. 30
  40. 6

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