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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 19 · 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 34 =
  2. 2.Half of 124 =
  3. 3.Half of 14 =
  4. 4.Double 77 =
  5. 5.Half of 166 =
  6. 6.Double 13 =
  7. 7.Double 81 =
  8. 8.Double 37 =
  9. 9.Half of 98 =
  10. 10.Half of 108 =
  11. 11.Half of 32 =
  12. 12.Double 58 =
  13. 13.Half of 72 =
  14. 14.Double 96 =
  15. 15.Half of 106 =
  16. 16.Double 63 =
  17. 17.Double 95 =
  18. 18.Half of 44 =
  19. 19.Double 86 =
  20. 20.Half of 146 =
  21. 21.Double 34 =
  22. 22.Half of 196 =
  23. 23.Double 73 =
  24. 24.Half of 48 =
  25. 25.Half of 76 =
  26. 26.Double 68 =
  27. 27.Half of 152 =
  28. 28.Half of 104 =
  29. 29.Double 21 =
  30. 30.Double 32 =
  31. 31.Double 89 =
  32. 32.Double 74 =
  33. 33.Half of 176 =
  34. 34.Half of 56 =
  35. 35.Half of 162 =
  36. 36.Double 66 =
  37. 37.Double 18 =
  38. 38.Double 98 =
  39. 39.Half of 86 =
  40. 40.Double 59 =

Answer key

  1. 17
  2. 62
  3. 7
  4. 154
  5. 83
  6. 26
  7. 162
  8. 74
  9. 49
  10. 54
  11. 16
  12. 116
  13. 36
  14. 192
  15. 53
  16. 126
  17. 190
  18. 22
  19. 172
  20. 73
  21. 68
  22. 98
  23. 146
  24. 24
  25. 38
  26. 136
  27. 76
  28. 52
  29. 42
  30. 64
  31. 178
  32. 148
  33. 88
  34. 28
  35. 81
  36. 132
  37. 36
  38. 196
  39. 43
  40. 118

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