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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 852 · 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 26 =
  2. 2.Half of 104 =
  3. 3.Half of 142 =
  4. 4.Double 84 =
  5. 5.Double 97 =
  6. 6.Half of 184 =
  7. 7.Double 88 =
  8. 8.Double 21 =
  9. 9.Half of 198 =
  10. 10.Half of 14 =
  11. 11.Half of 66 =
  12. 12.Half of 182 =
  13. 13.Double 68 =
  14. 14.Half of 122 =
  15. 15.Half of 18 =
  16. 16.Half of 62 =
  17. 17.Double 64 =
  18. 18.Half of 88 =
  19. 19.Double 36 =
  20. 20.Half of 24 =
  21. 21.Half of 118 =
  22. 22.Double 57 =
  23. 23.Double 94 =
  24. 24.Double 41 =
  25. 25.Half of 178 =
  26. 26.Double 52 =
  27. 27.Double 74 =
  28. 28.Half of 164 =
  29. 29.Double 71 =
  30. 30.Double 34 =
  31. 31.Half of 176 =
  32. 32.Half of 186 =
  33. 33.Double 82 =
  34. 34.Half of 22 =
  35. 35.Double 61 =
  36. 36.Double 26 =
  37. 37.Double 65 =
  38. 38.Double 18 =
  39. 39.Double 24 =
  40. 40.Half of 32 =

Answer key

  1. 13
  2. 52
  3. 71
  4. 168
  5. 194
  6. 92
  7. 176
  8. 42
  9. 99
  10. 7
  11. 33
  12. 91
  13. 136
  14. 61
  15. 9
  16. 31
  17. 128
  18. 44
  19. 72
  20. 12
  21. 59
  22. 114
  23. 188
  24. 82
  25. 89
  26. 104
  27. 148
  28. 82
  29. 142
  30. 68
  31. 88
  32. 93
  33. 164
  34. 11
  35. 122
  36. 52
  37. 130
  38. 36
  39. 48
  40. 16

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