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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 264 · 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 176 =
  2. 2.Half of 76 =
  3. 3.Double 41 =
  4. 4.Half of 186 =
  5. 5.Double 85 =
  6. 6.Half of 152 =
  7. 7.Double 35 =
  8. 8.Double 27 =
  9. 9.Double 25 =
  10. 10.Double 46 =
  11. 11.Double 74 =
  12. 12.Half of 82 =
  13. 13.Double 54 =
  14. 14.Double 32 =
  15. 15.Double 96 =
  16. 16.Half of 148 =
  17. 17.Half of 172 =
  18. 18.Half of 32 =
  19. 19.Half of 132 =
  20. 20.Double 43 =
  21. 21.Half of 48 =
  22. 22.Half of 198 =
  23. 23.Half of 62 =
  24. 24.Half of 124 =
  25. 25.Half of 156 =
  26. 26.Half of 142 =
  27. 27.Double 13 =
  28. 28.Double 91 =
  29. 29.Half of 182 =
  30. 30.Half of 28 =
  31. 31.Double 45 =
  32. 32.Half of 114 =
  33. 33.Half of 72 =
  34. 34.Double 14 =
  35. 35.Double 44 =
  36. 36.Half of 96 =
  37. 37.Double 39 =
  38. 38.Double 89 =
  39. 39.Double 64 =
  40. 40.Half of 64 =

Answer key

  1. 88
  2. 38
  3. 82
  4. 93
  5. 170
  6. 76
  7. 70
  8. 54
  9. 50
  10. 92
  11. 148
  12. 41
  13. 108
  14. 64
  15. 192
  16. 74
  17. 86
  18. 16
  19. 66
  20. 86
  21. 24
  22. 99
  23. 31
  24. 62
  25. 78
  26. 71
  27. 26
  28. 182
  29. 91
  30. 14
  31. 90
  32. 57
  33. 36
  34. 28
  35. 88
  36. 48
  37. 78
  38. 178
  39. 128
  40. 32

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