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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 254 · 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 122 =
  2. 2.Half of 62 =
  3. 3.Half of 88 =
  4. 4.Half of 154 =
  5. 5.Double 29 =
  6. 6.Double 53 =
  7. 7.Half of 94 =
  8. 8.Half of 196 =
  9. 9.Half of 168 =
  10. 10.Half of 56 =
  11. 11.Half of 48 =
  12. 12.Half of 184 =
  13. 13.Half of 72 =
  14. 14.Double 79 =
  15. 15.Half of 142 =
  16. 16.Double 64 =
  17. 17.Double 11 =
  18. 18.Double 56 =
  19. 19.Double 96 =
  20. 20.Double 89 =
  21. 21.Double 12 =
  22. 22.Half of 96 =
  23. 23.Double 13 =
  24. 24.Half of 144 =
  25. 25.Double 41 =
  26. 26.Double 32 =
  27. 27.Double 91 =
  28. 28.Half of 194 =
  29. 29.Half of 188 =
  30. 30.Half of 118 =
  31. 31.Half of 24 =
  32. 32.Half of 42 =
  33. 33.Double 37 =
  34. 34.Double 83 =
  35. 35.Half of 98 =
  36. 36.Double 35 =
  37. 37.Half of 112 =
  38. 38.Double 67 =
  39. 39.Double 15 =
  40. 40.Double 42 =

Answer key

  1. 61
  2. 31
  3. 44
  4. 77
  5. 58
  6. 106
  7. 47
  8. 98
  9. 84
  10. 28
  11. 24
  12. 92
  13. 36
  14. 158
  15. 71
  16. 128
  17. 22
  18. 112
  19. 192
  20. 178
  21. 24
  22. 48
  23. 26
  24. 72
  25. 82
  26. 64
  27. 182
  28. 97
  29. 94
  30. 59
  31. 12
  32. 21
  33. 74
  34. 166
  35. 49
  36. 70
  37. 56
  38. 134
  39. 30
  40. 84

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