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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 885 · 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 164 =
  2. 2.Double 88 =
  3. 3.Half of 166 =
  4. 4.Double 51 =
  5. 5.Double 18 =
  6. 6.Double 24 =
  7. 7.Half of 146 =
  8. 8.Double 94 =
  9. 9.Double 75 =
  10. 10.Half of 54 =
  11. 11.Half of 126 =
  12. 12.Half of 48 =
  13. 13.Double 76 =
  14. 14.Half of 74 =
  15. 15.Double 87 =
  16. 16.Double 68 =
  17. 17.Double 89 =
  18. 18.Double 54 =
  19. 19.Half of 132 =
  20. 20.Half of 148 =
  21. 21.Double 26 =
  22. 22.Double 86 =
  23. 23.Half of 194 =
  24. 24.Double 78 =
  25. 25.Half of 66 =
  26. 26.Double 53 =
  27. 27.Half of 142 =
  28. 28.Double 91 =
  29. 29.Half of 112 =
  30. 30.Half of 104 =
  31. 31.Half of 196 =
  32. 32.Half of 122 =
  33. 33.Half of 116 =
  34. 34.Double 41 =
  35. 35.Half of 134 =
  36. 36.Half of 114 =
  37. 37.Half of 38 =
  38. 38.Half of 98 =
  39. 39.Half of 46 =
  40. 40.Half of 16 =

Answer key

  1. 82
  2. 176
  3. 83
  4. 102
  5. 36
  6. 48
  7. 73
  8. 188
  9. 150
  10. 27
  11. 63
  12. 24
  13. 152
  14. 37
  15. 174
  16. 136
  17. 178
  18. 108
  19. 66
  20. 74
  21. 52
  22. 172
  23. 97
  24. 156
  25. 33
  26. 106
  27. 71
  28. 182
  29. 56
  30. 52
  31. 98
  32. 61
  33. 58
  34. 82
  35. 67
  36. 57
  37. 19
  38. 49
  39. 23
  40. 8

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