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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 930 · 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 44 =
  2. 2.Half of 176 =
  3. 3.Double 75 =
  4. 4.Half of 192 =
  5. 5.Half of 174 =
  6. 6.Half of 132 =
  7. 7.Double 37 =
  8. 8.Double 61 =
  9. 9.Double 17 =
  10. 10.Double 36 =
  11. 11.Half of 82 =
  12. 12.Double 99 =
  13. 13.Double 29 =
  14. 14.Double 21 =
  15. 15.Double 98 =
  16. 16.Half of 54 =
  17. 17.Double 54 =
  18. 18.Half of 84 =
  19. 19.Half of 66 =
  20. 20.Double 31 =
  21. 21.Double 45 =
  22. 22.Half of 188 =
  23. 23.Half of 16 =
  24. 24.Double 95 =
  25. 25.Half of 96 =
  26. 26.Half of 112 =
  27. 27.Half of 68 =
  28. 28.Half of 124 =
  29. 29.Double 41 =
  30. 30.Half of 184 =
  31. 31.Half of 94 =
  32. 32.Half of 162 =
  33. 33.Half of 108 =
  34. 34.Half of 58 =
  35. 35.Half of 56 =
  36. 36.Double 51 =
  37. 37.Double 12 =
  38. 38.Double 79 =
  39. 39.Double 13 =
  40. 40.Double 71 =

Answer key

  1. 22
  2. 88
  3. 150
  4. 96
  5. 87
  6. 66
  7. 74
  8. 122
  9. 34
  10. 72
  11. 41
  12. 198
  13. 58
  14. 42
  15. 196
  16. 27
  17. 108
  18. 42
  19. 33
  20. 62
  21. 90
  22. 94
  23. 8
  24. 190
  25. 48
  26. 56
  27. 34
  28. 62
  29. 82
  30. 92
  31. 47
  32. 81
  33. 54
  34. 29
  35. 28
  36. 102
  37. 24
  38. 158
  39. 26
  40. 142

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