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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 309 · 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 46 =
  2. 2.Double 35 =
  3. 3.Half of 186 =
  4. 4.Double 46 =
  5. 5.Half of 68 =
  6. 6.Double 36 =
  7. 7.Double 53 =
  8. 8.Double 74 =
  9. 9.Double 85 =
  10. 10.Half of 178 =
  11. 11.Double 14 =
  12. 12.Half of 134 =
  13. 13.Half of 72 =
  14. 14.Half of 14 =
  15. 15.Double 66 =
  16. 16.Double 37 =
  17. 17.Half of 112 =
  18. 18.Half of 192 =
  19. 19.Half of 188 =
  20. 20.Double 57 =
  21. 21.Double 21 =
  22. 22.Half of 118 =
  23. 23.Double 23 =
  24. 24.Half of 196 =
  25. 25.Double 78 =
  26. 26.Half of 62 =
  27. 27.Half of 36 =
  28. 28.Double 16 =
  29. 29.Double 47 =
  30. 30.Half of 42 =
  31. 31.Half of 66 =
  32. 32.Half of 28 =
  33. 33.Half of 96 =
  34. 34.Half of 64 =
  35. 35.Double 92 =
  36. 36.Half of 32 =
  37. 37.Double 24 =
  38. 38.Half of 34 =
  39. 39.Half of 122 =
  40. 40.Double 28 =

Answer key

  1. 23
  2. 70
  3. 93
  4. 92
  5. 34
  6. 72
  7. 106
  8. 148
  9. 170
  10. 89
  11. 28
  12. 67
  13. 36
  14. 7
  15. 132
  16. 74
  17. 56
  18. 96
  19. 94
  20. 114
  21. 42
  22. 59
  23. 46
  24. 98
  25. 156
  26. 31
  27. 18
  28. 32
  29. 94
  30. 21
  31. 33
  32. 14
  33. 48
  34. 32
  35. 184
  36. 16
  37. 48
  38. 17
  39. 61
  40. 56

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