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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 922 · 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 118 =
  2. 2.Double 88 =
  3. 3.Double 47 =
  4. 4.Half of 92 =
  5. 5.Half of 136 =
  6. 6.Double 32 =
  7. 7.Half of 96 =
  8. 8.Double 21 =
  9. 9.Half of 94 =
  10. 10.Double 19 =
  11. 11.Double 45 =
  12. 12.Double 15 =
  13. 13.Half of 146 =
  14. 14.Double 36 =
  15. 15.Double 72 =
  16. 16.Double 31 =
  17. 17.Half of 156 =
  18. 18.Half of 184 =
  19. 19.Half of 116 =
  20. 20.Half of 172 =
  21. 21.Half of 38 =
  22. 22.Half of 72 =
  23. 23.Half of 142 =
  24. 24.Half of 182 =
  25. 25.Double 23 =
  26. 26.Double 63 =
  27. 27.Double 92 =
  28. 28.Half of 102 =
  29. 29.Double 16 =
  30. 30.Half of 162 =
  31. 31.Double 53 =
  32. 32.Half of 122 =
  33. 33.Double 77 =
  34. 34.Double 96 =
  35. 35.Double 41 =
  36. 36.Half of 14 =
  37. 37.Half of 188 =
  38. 38.Half of 32 =
  39. 39.Half of 152 =
  40. 40.Double 59 =

Answer key

  1. 59
  2. 176
  3. 94
  4. 46
  5. 68
  6. 64
  7. 48
  8. 42
  9. 47
  10. 38
  11. 90
  12. 30
  13. 73
  14. 72
  15. 144
  16. 62
  17. 78
  18. 92
  19. 58
  20. 86
  21. 19
  22. 36
  23. 71
  24. 91
  25. 46
  26. 126
  27. 184
  28. 51
  29. 32
  30. 81
  31. 106
  32. 61
  33. 154
  34. 192
  35. 82
  36. 7
  37. 94
  38. 16
  39. 76
  40. 118

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