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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 272 · 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 92 =
  2. 2.Double 34 =
  3. 3.Double 56 =
  4. 4.Half of 142 =
  5. 5.Double 91 =
  6. 6.Double 28 =
  7. 7.Half of 58 =
  8. 8.Double 83 =
  9. 9.Double 57 =
  10. 10.Half of 54 =
  11. 11.Double 16 =
  12. 12.Double 27 =
  13. 13.Half of 178 =
  14. 14.Double 44 =
  15. 15.Double 87 =
  16. 16.Half of 152 =
  17. 17.Double 55 =
  18. 18.Half of 28 =
  19. 19.Double 76 =
  20. 20.Half of 64 =
  21. 21.Double 19 =
  22. 22.Half of 184 =
  23. 23.Half of 112 =
  24. 24.Half of 98 =
  25. 25.Double 79 =
  26. 26.Double 33 =
  27. 27.Double 15 =
  28. 28.Double 69 =
  29. 29.Half of 172 =
  30. 30.Double 64 =
  31. 31.Double 21 =
  32. 32.Double 84 =
  33. 33.Half of 62 =
  34. 34.Half of 42 =
  35. 35.Half of 106 =
  36. 36.Double 51 =
  37. 37.Half of 192 =
  38. 38.Double 45 =
  39. 39.Half of 86 =
  40. 40.Half of 156 =

Answer key

  1. 46
  2. 68
  3. 112
  4. 71
  5. 182
  6. 56
  7. 29
  8. 166
  9. 114
  10. 27
  11. 32
  12. 54
  13. 89
  14. 88
  15. 174
  16. 76
  17. 110
  18. 14
  19. 152
  20. 32
  21. 38
  22. 92
  23. 56
  24. 49
  25. 158
  26. 66
  27. 30
  28. 138
  29. 86
  30. 128
  31. 42
  32. 168
  33. 31
  34. 21
  35. 53
  36. 102
  37. 96
  38. 90
  39. 43
  40. 78

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