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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 579 · 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 142 =
  2. 2.Half of 96 =
  3. 3.Half of 152 =
  4. 4.Half of 42 =
  5. 5.Half of 52 =
  6. 6.Double 44 =
  7. 7.Half of 132 =
  8. 8.Double 89 =
  9. 9.Double 69 =
  10. 10.Double 25 =
  11. 11.Half of 44 =
  12. 12.Double 91 =
  13. 13.Double 38 =
  14. 14.Half of 58 =
  15. 15.Double 62 =
  16. 16.Double 97 =
  17. 17.Double 75 =
  18. 18.Double 49 =
  19. 19.Half of 24 =
  20. 20.Half of 36 =
  21. 21.Half of 112 =
  22. 22.Double 22 =
  23. 23.Double 43 =
  24. 24.Half of 192 =
  25. 25.Double 19 =
  26. 26.Double 32 =
  27. 27.Double 82 =
  28. 28.Half of 186 =
  29. 29.Half of 38 =
  30. 30.Half of 134 =
  31. 31.Double 85 =
  32. 32.Half of 46 =
  33. 33.Half of 106 =
  34. 34.Half of 26 =
  35. 35.Double 77 =
  36. 36.Double 88 =
  37. 37.Double 87 =
  38. 38.Half of 66 =
  39. 39.Half of 148 =
  40. 40.Half of 48 =

Answer key

  1. 71
  2. 48
  3. 76
  4. 21
  5. 26
  6. 88
  7. 66
  8. 178
  9. 138
  10. 50
  11. 22
  12. 182
  13. 76
  14. 29
  15. 124
  16. 194
  17. 150
  18. 98
  19. 12
  20. 18
  21. 56
  22. 44
  23. 86
  24. 96
  25. 38
  26. 64
  27. 164
  28. 93
  29. 19
  30. 67
  31. 170
  32. 23
  33. 53
  34. 13
  35. 154
  36. 176
  37. 174
  38. 33
  39. 74
  40. 24

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