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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 184 · 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 194 =
  2. 2.Half of 44 =
  3. 3.Half of 188 =
  4. 4.Half of 42 =
  5. 5.Double 85 =
  6. 6.Double 98 =
  7. 7.Double 46 =
  8. 8.Double 34 =
  9. 9.Double 95 =
  10. 10.Half of 132 =
  11. 11.Half of 36 =
  12. 12.Half of 94 =
  13. 13.Double 99 =
  14. 14.Double 97 =
  15. 15.Half of 122 =
  16. 16.Double 84 =
  17. 17.Half of 168 =
  18. 18.Double 21 =
  19. 19.Half of 18 =
  20. 20.Half of 96 =
  21. 21.Double 17 =
  22. 22.Double 94 =
  23. 23.Double 72 =
  24. 24.Half of 52 =
  25. 25.Half of 38 =
  26. 26.Double 13 =
  27. 27.Double 36 =
  28. 28.Half of 174 =
  29. 29.Half of 62 =
  30. 30.Double 42 =
  31. 31.Double 64 =
  32. 32.Double 58 =
  33. 33.Double 35 =
  34. 34.Half of 134 =
  35. 35.Half of 86 =
  36. 36.Half of 102 =
  37. 37.Double 19 =
  38. 38.Double 28 =
  39. 39.Double 24 =
  40. 40.Half of 178 =

Answer key

  1. 97
  2. 22
  3. 94
  4. 21
  5. 170
  6. 196
  7. 92
  8. 68
  9. 190
  10. 66
  11. 18
  12. 47
  13. 198
  14. 194
  15. 61
  16. 168
  17. 84
  18. 42
  19. 9
  20. 48
  21. 34
  22. 188
  23. 144
  24. 26
  25. 19
  26. 26
  27. 72
  28. 87
  29. 31
  30. 84
  31. 128
  32. 116
  33. 70
  34. 67
  35. 43
  36. 51
  37. 38
  38. 56
  39. 48
  40. 89

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