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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 246 · 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 14 =
  2. 2.Half of 182 =
  3. 3.Double 35 =
  4. 4.Double 51 =
  5. 5.Half of 166 =
  6. 6.Half of 22 =
  7. 7.Double 34 =
  8. 8.Half of 192 =
  9. 9.Double 81 =
  10. 10.Double 76 =
  11. 11.Double 21 =
  12. 12.Double 57 =
  13. 13.Double 26 =
  14. 14.Half of 152 =
  15. 15.Double 73 =
  16. 16.Half of 102 =
  17. 17.Double 25 =
  18. 18.Double 24 =
  19. 19.Double 54 =
  20. 20.Double 87 =
  21. 21.Double 92 =
  22. 22.Double 37 =
  23. 23.Half of 98 =
  24. 24.Half of 68 =
  25. 25.Double 12 =
  26. 26.Half of 132 =
  27. 27.Half of 162 =
  28. 28.Double 13 =
  29. 29.Double 11 =
  30. 30.Half of 124 =
  31. 31.Double 96 =
  32. 32.Double 68 =
  33. 33.Double 31 =
  34. 34.Half of 96 =
  35. 35.Double 28 =
  36. 36.Half of 104 =
  37. 37.Half of 164 =
  38. 38.Double 16 =
  39. 39.Double 53 =
  40. 40.Half of 46 =

Answer key

  1. 7
  2. 91
  3. 70
  4. 102
  5. 83
  6. 11
  7. 68
  8. 96
  9. 162
  10. 152
  11. 42
  12. 114
  13. 52
  14. 76
  15. 146
  16. 51
  17. 50
  18. 48
  19. 108
  20. 174
  21. 184
  22. 74
  23. 49
  24. 34
  25. 24
  26. 66
  27. 81
  28. 26
  29. 22
  30. 62
  31. 192
  32. 136
  33. 62
  34. 48
  35. 56
  36. 52
  37. 82
  38. 32
  39. 106
  40. 23

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