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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 4 · 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 192 =
  2. 2.Double 36 =
  3. 3.Double 73 =
  4. 4.Half of 52 =
  5. 5.Double 45 =
  6. 6.Half of 196 =
  7. 7.Half of 58 =
  8. 8.Half of 62 =
  9. 9.Double 98 =
  10. 10.Half of 54 =
  11. 11.Double 71 =
  12. 12.Half of 92 =
  13. 13.Double 15 =
  14. 14.Double 13 =
  15. 15.Double 87 =
  16. 16.Half of 128 =
  17. 17.Double 33 =
  18. 18.Double 68 =
  19. 19.Double 85 =
  20. 20.Double 81 =
  21. 21.Double 56 =
  22. 22.Double 78 =
  23. 23.Double 66 =
  24. 24.Double 76 =
  25. 25.Double 38 =
  26. 26.Double 79 =
  27. 27.Double 84 =
  28. 28.Half of 16 =
  29. 29.Half of 18 =
  30. 30.Half of 24 =
  31. 31.Double 34 =
  32. 32.Double 16 =
  33. 33.Half of 32 =
  34. 34.Double 27 =
  35. 35.Half of 46 =
  36. 36.Half of 122 =
  37. 37.Half of 152 =
  38. 38.Half of 26 =
  39. 39.Double 21 =
  40. 40.Double 49 =

Answer key

  1. 96
  2. 72
  3. 146
  4. 26
  5. 90
  6. 98
  7. 29
  8. 31
  9. 196
  10. 27
  11. 142
  12. 46
  13. 30
  14. 26
  15. 174
  16. 64
  17. 66
  18. 136
  19. 170
  20. 162
  21. 112
  22. 156
  23. 132
  24. 152
  25. 76
  26. 158
  27. 168
  28. 8
  29. 9
  30. 12
  31. 68
  32. 32
  33. 16
  34. 54
  35. 23
  36. 61
  37. 76
  38. 13
  39. 42
  40. 98

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