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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 883 · 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 22 =
  2. 2.Half of 88 =
  3. 3.Double 81 =
  4. 4.Half of 166 =
  5. 5.Half of 108 =
  6. 6.Double 17 =
  7. 7.Half of 12 =
  8. 8.Half of 116 =
  9. 9.Double 25 =
  10. 10.Double 65 =
  11. 11.Half of 48 =
  12. 12.Double 11 =
  13. 13.Half of 102 =
  14. 14.Double 91 =
  15. 15.Half of 122 =
  16. 16.Double 97 =
  17. 17.Half of 78 =
  18. 18.Double 12 =
  19. 19.Half of 76 =
  20. 20.Double 41 =
  21. 21.Half of 156 =
  22. 22.Half of 192 =
  23. 23.Half of 68 =
  24. 24.Double 21 =
  25. 25.Half of 182 =
  26. 26.Double 67 =
  27. 27.Half of 32 =
  28. 28.Half of 162 =
  29. 29.Double 86 =
  30. 30.Half of 92 =
  31. 31.Half of 44 =
  32. 32.Double 96 =
  33. 33.Double 43 =
  34. 34.Double 58 =
  35. 35.Half of 142 =
  36. 36.Double 44 =
  37. 37.Double 33 =
  38. 38.Double 46 =
  39. 39.Double 61 =
  40. 40.Double 71 =

Answer key

  1. 11
  2. 44
  3. 162
  4. 83
  5. 54
  6. 34
  7. 6
  8. 58
  9. 50
  10. 130
  11. 24
  12. 22
  13. 51
  14. 182
  15. 61
  16. 194
  17. 39
  18. 24
  19. 38
  20. 82
  21. 78
  22. 96
  23. 34
  24. 42
  25. 91
  26. 134
  27. 16
  28. 81
  29. 172
  30. 46
  31. 22
  32. 192
  33. 86
  34. 116
  35. 71
  36. 88
  37. 66
  38. 92
  39. 122
  40. 142

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