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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 754 · 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 62 =
  2. 2.Half of 176 =
  3. 3.Half of 94 =
  4. 4.Double 93 =
  5. 5.Double 26 =
  6. 6.Double 97 =
  7. 7.Double 76 =
  8. 8.Half of 198 =
  9. 9.Double 75 =
  10. 10.Double 63 =
  11. 11.Half of 104 =
  12. 12.Half of 68 =
  13. 13.Half of 56 =
  14. 14.Double 64 =
  15. 15.Half of 22 =
  16. 16.Half of 98 =
  17. 17.Double 15 =
  18. 18.Double 31 =
  19. 19.Half of 86 =
  20. 20.Double 79 =
  21. 21.Half of 108 =
  22. 22.Double 99 =
  23. 23.Double 77 =
  24. 24.Half of 54 =
  25. 25.Half of 92 =
  26. 26.Half of 192 =
  27. 27.Double 25 =
  28. 28.Double 82 =
  29. 29.Double 39 =
  30. 30.Half of 34 =
  31. 31.Double 84 =
  32. 32.Double 42 =
  33. 33.Double 47 =
  34. 34.Half of 122 =
  35. 35.Half of 162 =
  36. 36.Double 94 =
  37. 37.Double 48 =
  38. 38.Double 57 =
  39. 39.Double 21 =
  40. 40.Half of 132 =

Answer key

  1. 31
  2. 88
  3. 47
  4. 186
  5. 52
  6. 194
  7. 152
  8. 99
  9. 150
  10. 126
  11. 52
  12. 34
  13. 28
  14. 128
  15. 11
  16. 49
  17. 30
  18. 62
  19. 43
  20. 158
  21. 54
  22. 198
  23. 154
  24. 27
  25. 46
  26. 96
  27. 50
  28. 164
  29. 78
  30. 17
  31. 168
  32. 84
  33. 94
  34. 61
  35. 81
  36. 188
  37. 96
  38. 114
  39. 42
  40. 66

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