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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 764 · 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 53 =
  2. 2.Double 29 =
  3. 3.Double 73 =
  4. 4.Half of 52 =
  5. 5.Half of 42 =
  6. 6.Half of 76 =
  7. 7.Half of 96 =
  8. 8.Half of 158 =
  9. 9.Half of 154 =
  10. 10.Double 81 =
  11. 11.Half of 44 =
  12. 12.Double 62 =
  13. 13.Double 42 =
  14. 14.Half of 32 =
  15. 15.Double 51 =
  16. 16.Half of 22 =
  17. 17.Double 16 =
  18. 18.Half of 108 =
  19. 19.Half of 192 =
  20. 20.Half of 58 =
  21. 21.Double 22 =
  22. 22.Double 99 =
  23. 23.Half of 134 =
  24. 24.Double 86 =
  25. 25.Half of 26 =
  26. 26.Double 26 =
  27. 27.Double 91 =
  28. 28.Half of 56 =
  29. 29.Half of 174 =
  30. 30.Double 24 =
  31. 31.Double 63 =
  32. 32.Half of 176 =
  33. 33.Double 17 =
  34. 34.Half of 94 =
  35. 35.Double 96 =
  36. 36.Half of 62 =
  37. 37.Double 36 =
  38. 38.Double 52 =
  39. 39.Half of 186 =
  40. 40.Half of 168 =

Answer key

  1. 106
  2. 58
  3. 146
  4. 26
  5. 21
  6. 38
  7. 48
  8. 79
  9. 77
  10. 162
  11. 22
  12. 124
  13. 84
  14. 16
  15. 102
  16. 11
  17. 32
  18. 54
  19. 96
  20. 29
  21. 44
  22. 198
  23. 67
  24. 172
  25. 13
  26. 52
  27. 182
  28. 28
  29. 87
  30. 48
  31. 126
  32. 88
  33. 34
  34. 47
  35. 192
  36. 31
  37. 72
  38. 104
  39. 93
  40. 84

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