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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 924 · 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 162 =
  2. 2.Half of 18 =
  3. 3.Half of 48 =
  4. 4.Half of 174 =
  5. 5.Double 36 =
  6. 6.Double 33 =
  7. 7.Double 41 =
  8. 8.Double 59 =
  9. 9.Double 77 =
  10. 10.Half of 186 =
  11. 11.Double 88 =
  12. 12.Half of 176 =
  13. 13.Double 24 =
  14. 14.Double 72 =
  15. 15.Half of 92 =
  16. 16.Double 66 =
  17. 17.Double 96 =
  18. 18.Double 67 =
  19. 19.Half of 86 =
  20. 20.Double 53 =
  21. 21.Half of 192 =
  22. 22.Half of 134 =
  23. 23.Double 56 =
  24. 24.Double 28 =
  25. 25.Half of 82 =
  26. 26.Double 92 =
  27. 27.Half of 138 =
  28. 28.Double 22 =
  29. 29.Half of 22 =
  30. 30.Double 14 =
  31. 31.Double 34 =
  32. 32.Double 82 =
  33. 33.Half of 16 =
  34. 34.Half of 102 =
  35. 35.Half of 42 =
  36. 36.Double 16 =
  37. 37.Double 13 =
  38. 38.Half of 114 =
  39. 39.Double 93 =
  40. 40.Half of 94 =

Answer key

  1. 81
  2. 9
  3. 24
  4. 87
  5. 72
  6. 66
  7. 82
  8. 118
  9. 154
  10. 93
  11. 176
  12. 88
  13. 48
  14. 144
  15. 46
  16. 132
  17. 192
  18. 134
  19. 43
  20. 106
  21. 96
  22. 67
  23. 112
  24. 56
  25. 41
  26. 184
  27. 69
  28. 44
  29. 11
  30. 28
  31. 68
  32. 164
  33. 8
  34. 51
  35. 21
  36. 32
  37. 26
  38. 57
  39. 186
  40. 47

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