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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 41 · 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 14 =
  2. 2.Half of 48 =
  3. 3.Double 37 =
  4. 4.Half of 58 =
  5. 5.Double 83 =
  6. 6.Half of 128 =
  7. 7.Half of 132 =
  8. 8.Double 79 =
  9. 9.Half of 138 =
  10. 10.Double 59 =
  11. 11.Double 28 =
  12. 12.Half of 94 =
  13. 13.Half of 38 =
  14. 14.Half of 72 =
  15. 15.Double 49 =
  16. 16.Double 51 =
  17. 17.Double 45 =
  18. 18.Double 17 =
  19. 19.Half of 64 =
  20. 20.Half of 24 =
  21. 21.Double 65 =
  22. 22.Double 89 =
  23. 23.Double 35 =
  24. 24.Double 99 =
  25. 25.Half of 188 =
  26. 26.Half of 124 =
  27. 27.Double 43 =
  28. 28.Double 76 =
  29. 29.Double 93 =
  30. 30.Double 13 =
  31. 31.Half of 146 =
  32. 32.Half of 62 =
  33. 33.Half of 32 =
  34. 34.Half of 104 =
  35. 35.Double 12 =
  36. 36.Double 66 =
  37. 37.Half of 136 =
  38. 38.Double 38 =
  39. 39.Half of 106 =
  40. 40.Half of 36 =

Answer key

  1. 28
  2. 24
  3. 74
  4. 29
  5. 166
  6. 64
  7. 66
  8. 158
  9. 69
  10. 118
  11. 56
  12. 47
  13. 19
  14. 36
  15. 98
  16. 102
  17. 90
  18. 34
  19. 32
  20. 12
  21. 130
  22. 178
  23. 70
  24. 198
  25. 94
  26. 62
  27. 86
  28. 152
  29. 186
  30. 26
  31. 73
  32. 31
  33. 16
  34. 52
  35. 24
  36. 132
  37. 68
  38. 76
  39. 53
  40. 18

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