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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 743 · 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 188 =
  2. 2.Half of 16 =
  3. 3.Double 32 =
  4. 4.Double 26 =
  5. 5.Double 49 =
  6. 6.Half of 116 =
  7. 7.Half of 54 =
  8. 8.Half of 192 =
  9. 9.Double 37 =
  10. 10.Half of 138 =
  11. 11.Half of 52 =
  12. 12.Double 45 =
  13. 13.Half of 48 =
  14. 14.Double 29 =
  15. 15.Double 89 =
  16. 16.Half of 96 =
  17. 17.Double 94 =
  18. 18.Half of 114 =
  19. 19.Half of 22 =
  20. 20.Half of 164 =
  21. 21.Half of 42 =
  22. 22.Double 93 =
  23. 23.Half of 154 =
  24. 24.Double 59 =
  25. 25.Half of 92 =
  26. 26.Half of 112 =
  27. 27.Double 66 =
  28. 28.Double 46 =
  29. 29.Double 34 =
  30. 30.Double 63 =
  31. 31.Double 62 =
  32. 32.Half of 162 =
  33. 33.Half of 14 =
  34. 34.Half of 124 =
  35. 35.Double 21 =
  36. 36.Double 84 =
  37. 37.Half of 178 =
  38. 38.Double 57 =
  39. 39.Half of 166 =
  40. 40.Half of 158 =

Answer key

  1. 94
  2. 8
  3. 64
  4. 52
  5. 98
  6. 58
  7. 27
  8. 96
  9. 74
  10. 69
  11. 26
  12. 90
  13. 24
  14. 58
  15. 178
  16. 48
  17. 188
  18. 57
  19. 11
  20. 82
  21. 21
  22. 186
  23. 77
  24. 118
  25. 46
  26. 56
  27. 132
  28. 92
  29. 68
  30. 126
  31. 124
  32. 81
  33. 7
  34. 62
  35. 42
  36. 168
  37. 89
  38. 114
  39. 83
  40. 79

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