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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 884 · 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 186 =
  2. 2.Double 24 =
  3. 3.Half of 28 =
  4. 4.Half of 182 =
  5. 5.Half of 64 =
  6. 6.Half of 106 =
  7. 7.Double 43 =
  8. 8.Double 62 =
  9. 9.Half of 82 =
  10. 10.Half of 24 =
  11. 11.Half of 154 =
  12. 12.Double 56 =
  13. 13.Double 11 =
  14. 14.Double 41 =
  15. 15.Half of 128 =
  16. 16.Half of 172 =
  17. 17.Half of 36 =
  18. 18.Double 72 =
  19. 19.Half of 136 =
  20. 20.Half of 52 =
  21. 21.Double 85 =
  22. 22.Half of 144 =
  23. 23.Double 98 =
  24. 24.Double 21 =
  25. 25.Double 61 =
  26. 26.Double 76 =
  27. 27.Double 91 =
  28. 28.Half of 34 =
  29. 29.Double 88 =
  30. 30.Half of 116 =
  31. 31.Half of 102 =
  32. 32.Half of 42 =
  33. 33.Half of 72 =
  34. 34.Half of 112 =
  35. 35.Double 71 =
  36. 36.Double 75 =
  37. 37.Double 38 =
  38. 38.Double 29 =
  39. 39.Double 94 =
  40. 40.Double 31 =

Answer key

  1. 93
  2. 48
  3. 14
  4. 91
  5. 32
  6. 53
  7. 86
  8. 124
  9. 41
  10. 12
  11. 77
  12. 112
  13. 22
  14. 82
  15. 64
  16. 86
  17. 18
  18. 144
  19. 68
  20. 26
  21. 170
  22. 72
  23. 196
  24. 42
  25. 122
  26. 152
  27. 182
  28. 17
  29. 176
  30. 58
  31. 51
  32. 21
  33. 36
  34. 56
  35. 142
  36. 150
  37. 76
  38. 58
  39. 188
  40. 62

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