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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 952 · 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.Double 55 =
  2. 2.Half of 192 =
  3. 3.Half of 156 =
  4. 4.Half of 174 =
  5. 5.Double 18 =
  6. 6.Half of 62 =
  7. 7.Half of 56 =
  8. 8.Double 36 =
  9. 9.Half of 46 =
  10. 10.Half of 66 =
  11. 11.Double 33 =
  12. 12.Half of 194 =
  13. 13.Half of 152 =
  14. 14.Half of 98 =
  15. 15.Half of 96 =
  16. 16.Half of 132 =
  17. 17.Half of 86 =
  18. 18.Double 74 =
  19. 19.Half of 138 =
  20. 20.Double 75 =
  21. 21.Double 45 =
  22. 22.Double 51 =
  23. 23.Double 56 =
  24. 24.Double 16 =
  25. 25.Half of 18 =
  26. 26.Half of 112 =
  27. 27.Double 89 =
  28. 28.Half of 68 =
  29. 29.Half of 182 =
  30. 30.Double 35 =
  31. 31.Double 98 =
  32. 32.Double 28 =
  33. 33.Double 94 =
  34. 34.Double 79 =
  35. 35.Half of 184 =
  36. 36.Double 41 =
  37. 37.Double 12 =
  38. 38.Double 13 =
  39. 39.Half of 188 =
  40. 40.Double 34 =

Answer key

  1. 110
  2. 96
  3. 78
  4. 87
  5. 36
  6. 31
  7. 28
  8. 72
  9. 23
  10. 33
  11. 66
  12. 97
  13. 76
  14. 49
  15. 48
  16. 66
  17. 43
  18. 148
  19. 69
  20. 150
  21. 90
  22. 102
  23. 112
  24. 32
  25. 9
  26. 56
  27. 178
  28. 34
  29. 91
  30. 70
  31. 196
  32. 56
  33. 188
  34. 158
  35. 92
  36. 82
  37. 24
  38. 26
  39. 94
  40. 68

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