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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 425 · 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 152 =
  2. 2.Half of 14 =
  3. 3.Double 96 =
  4. 4.Half of 172 =
  5. 5.Double 62 =
  6. 6.Half of 196 =
  7. 7.Half of 42 =
  8. 8.Double 78 =
  9. 9.Double 26 =
  10. 10.Half of 122 =
  11. 11.Double 77 =
  12. 12.Double 51 =
  13. 13.Double 92 =
  14. 14.Double 39 =
  15. 15.Double 38 =
  16. 16.Double 94 =
  17. 17.Half of 54 =
  18. 18.Double 79 =
  19. 19.Double 93 =
  20. 20.Half of 168 =
  21. 21.Double 14 =
  22. 22.Half of 178 =
  23. 23.Half of 22 =
  24. 24.Double 64 =
  25. 25.Double 91 =
  26. 26.Half of 114 =
  27. 27.Half of 56 =
  28. 28.Double 86 =
  29. 29.Double 88 =
  30. 30.Double 11 =
  31. 31.Double 24 =
  32. 32.Double 53 =
  33. 33.Half of 36 =
  34. 34.Half of 62 =
  35. 35.Double 63 =
  36. 36.Double 31 =
  37. 37.Half of 192 =
  38. 38.Double 19 =
  39. 39.Double 43 =
  40. 40.Half of 166 =

Answer key

  1. 76
  2. 7
  3. 192
  4. 86
  5. 124
  6. 98
  7. 21
  8. 156
  9. 52
  10. 61
  11. 154
  12. 102
  13. 184
  14. 78
  15. 76
  16. 188
  17. 27
  18. 158
  19. 186
  20. 84
  21. 28
  22. 89
  23. 11
  24. 128
  25. 182
  26. 57
  27. 28
  28. 172
  29. 176
  30. 22
  31. 48
  32. 106
  33. 18
  34. 31
  35. 126
  36. 62
  37. 96
  38. 38
  39. 86
  40. 83

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