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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 316 · 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 59 =
  3. 3.Half of 52 =
  4. 4.Double 35 =
  5. 5.Half of 174 =
  6. 6.Double 92 =
  7. 7.Double 14 =
  8. 8.Double 32 =
  9. 9.Double 76 =
  10. 10.Double 86 =
  11. 11.Double 27 =
  12. 12.Double 34 =
  13. 13.Double 61 =
  14. 14.Half of 64 =
  15. 15.Double 46 =
  16. 16.Half of 154 =
  17. 17.Half of 102 =
  18. 18.Half of 72 =
  19. 19.Double 43 =
  20. 20.Double 37 =
  21. 21.Double 85 =
  22. 22.Double 21 =
  23. 23.Half of 54 =
  24. 24.Double 19 =
  25. 25.Double 38 =
  26. 26.Double 56 =
  27. 27.Double 98 =
  28. 28.Double 15 =
  29. 29.Half of 176 =
  30. 30.Double 81 =
  31. 31.Double 11 =
  32. 32.Half of 96 =
  33. 33.Double 95 =
  34. 34.Half of 158 =
  35. 35.Double 36 =
  36. 36.Half of 42 =
  37. 37.Half of 132 =
  38. 38.Half of 14 =
  39. 39.Double 53 =
  40. 40.Half of 122 =

Answer key

  1. 46
  2. 118
  3. 26
  4. 70
  5. 87
  6. 184
  7. 28
  8. 64
  9. 152
  10. 172
  11. 54
  12. 68
  13. 122
  14. 32
  15. 92
  16. 77
  17. 51
  18. 36
  19. 86
  20. 74
  21. 170
  22. 42
  23. 27
  24. 38
  25. 76
  26. 112
  27. 196
  28. 30
  29. 88
  30. 162
  31. 22
  32. 48
  33. 190
  34. 79
  35. 72
  36. 21
  37. 66
  38. 7
  39. 106
  40. 61

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