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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 215 · 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 194 =
  2. 2.Half of 164 =
  3. 3.Double 47 =
  4. 4.Double 71 =
  5. 5.Double 87 =
  6. 6.Double 73 =
  7. 7.Double 12 =
  8. 8.Half of 64 =
  9. 9.Double 24 =
  10. 10.Double 85 =
  11. 11.Double 38 =
  12. 12.Half of 44 =
  13. 13.Double 46 =
  14. 14.Double 43 =
  15. 15.Half of 126 =
  16. 16.Half of 26 =
  17. 17.Half of 142 =
  18. 18.Double 68 =
  19. 19.Half of 128 =
  20. 20.Double 33 =
  21. 21.Double 89 =
  22. 22.Double 16 =
  23. 23.Double 98 =
  24. 24.Double 26 =
  25. 25.Half of 106 =
  26. 26.Double 49 =
  27. 27.Half of 132 =
  28. 28.Half of 16 =
  29. 29.Half of 112 =
  30. 30.Half of 152 =
  31. 31.Double 15 =
  32. 32.Double 92 =
  33. 33.Double 17 =
  34. 34.Half of 182 =
  35. 35.Double 34 =
  36. 36.Double 65 =
  37. 37.Double 63 =
  38. 38.Double 27 =
  39. 39.Half of 192 =
  40. 40.Half of 168 =

Answer key

  1. 97
  2. 82
  3. 94
  4. 142
  5. 174
  6. 146
  7. 24
  8. 32
  9. 48
  10. 170
  11. 76
  12. 22
  13. 92
  14. 86
  15. 63
  16. 13
  17. 71
  18. 136
  19. 64
  20. 66
  21. 178
  22. 32
  23. 196
  24. 52
  25. 53
  26. 98
  27. 66
  28. 8
  29. 56
  30. 76
  31. 30
  32. 184
  33. 34
  34. 91
  35. 68
  36. 130
  37. 126
  38. 54
  39. 96
  40. 84

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