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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 674 · 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.Double 81 =
  3. 3.Double 54 =
  4. 4.Double 35 =
  5. 5.Half of 182 =
  6. 6.Half of 192 =
  7. 7.Double 74 =
  8. 8.Double 56 =
  9. 9.Double 34 =
  10. 10.Half of 38 =
  11. 11.Double 76 =
  12. 12.Half of 154 =
  13. 13.Double 17 =
  14. 14.Double 84 =
  15. 15.Double 91 =
  16. 16.Double 13 =
  17. 17.Double 98 =
  18. 18.Double 21 =
  19. 19.Double 97 =
  20. 20.Double 71 =
  21. 21.Double 42 =
  22. 22.Double 11 =
  23. 23.Half of 26 =
  24. 24.Double 37 =
  25. 25.Half of 52 =
  26. 26.Half of 134 =
  27. 27.Half of 46 =
  28. 28.Half of 112 =
  29. 29.Half of 132 =
  30. 30.Double 27 =
  31. 31.Double 24 =
  32. 32.Double 57 =
  33. 33.Double 96 =
  34. 34.Half of 114 =
  35. 35.Double 69 =
  36. 36.Half of 168 =
  37. 37.Double 23 =
  38. 38.Half of 94 =
  39. 39.Double 63 =
  40. 40.Half of 72 =

Answer key

  1. 17
  2. 162
  3. 108
  4. 70
  5. 91
  6. 96
  7. 148
  8. 112
  9. 68
  10. 19
  11. 152
  12. 77
  13. 34
  14. 168
  15. 182
  16. 26
  17. 196
  18. 42
  19. 194
  20. 142
  21. 84
  22. 22
  23. 13
  24. 74
  25. 26
  26. 67
  27. 23
  28. 56
  29. 66
  30. 54
  31. 48
  32. 114
  33. 192
  34. 57
  35. 138
  36. 84
  37. 46
  38. 47
  39. 126
  40. 36

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