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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 996 · 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 98 =
  2. 2.Double 85 =
  3. 3.Half of 136 =
  4. 4.Double 27 =
  5. 5.Double 63 =
  6. 6.Half of 44 =
  7. 7.Half of 148 =
  8. 8.Half of 112 =
  9. 9.Double 76 =
  10. 10.Half of 182 =
  11. 11.Double 36 =
  12. 12.Half of 62 =
  13. 13.Double 43 =
  14. 14.Double 24 =
  15. 15.Double 52 =
  16. 16.Double 33 =
  17. 17.Half of 88 =
  18. 18.Half of 84 =
  19. 19.Double 59 =
  20. 20.Half of 116 =
  21. 21.Half of 126 =
  22. 22.Double 82 =
  23. 23.Double 13 =
  24. 24.Double 39 =
  25. 25.Double 15 =
  26. 26.Double 11 =
  27. 27.Double 77 =
  28. 28.Double 66 =
  29. 29.Double 65 =
  30. 30.Half of 128 =
  31. 31.Double 22 =
  32. 32.Half of 54 =
  33. 33.Double 71 =
  34. 34.Double 38 =
  35. 35.Half of 58 =
  36. 36.Half of 72 =
  37. 37.Half of 34 =
  38. 38.Half of 66 =
  39. 39.Double 17 =
  40. 40.Double 97 =

Answer key

  1. 196
  2. 170
  3. 68
  4. 54
  5. 126
  6. 22
  7. 74
  8. 56
  9. 152
  10. 91
  11. 72
  12. 31
  13. 86
  14. 48
  15. 104
  16. 66
  17. 44
  18. 42
  19. 118
  20. 58
  21. 63
  22. 164
  23. 26
  24. 78
  25. 30
  26. 22
  27. 154
  28. 132
  29. 130
  30. 64
  31. 44
  32. 27
  33. 142
  34. 76
  35. 29
  36. 36
  37. 17
  38. 33
  39. 34
  40. 194

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