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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 859 · 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 74 =
  2. 2.Double 26 =
  3. 3.Half of 128 =
  4. 4.Double 52 =
  5. 5.Double 25 =
  6. 6.Half of 114 =
  7. 7.Half of 38 =
  8. 8.Double 73 =
  9. 9.Double 38 =
  10. 10.Half of 164 =
  11. 11.Half of 82 =
  12. 12.Half of 182 =
  13. 13.Double 11 =
  14. 14.Double 92 =
  15. 15.Half of 58 =
  16. 16.Half of 62 =
  17. 17.Double 15 =
  18. 18.Half of 142 =
  19. 19.Double 19 =
  20. 20.Double 61 =
  21. 21.Double 68 =
  22. 22.Double 91 =
  23. 23.Half of 24 =
  24. 24.Double 95 =
  25. 25.Double 47 =
  26. 26.Half of 148 =
  27. 27.Double 41 =
  28. 28.Half of 64 =
  29. 29.Half of 188 =
  30. 30.Half of 108 =
  31. 31.Double 13 =
  32. 32.Half of 92 =
  33. 33.Double 86 =
  34. 34.Double 32 =
  35. 35.Half of 44 =
  36. 36.Half of 96 =
  37. 37.Double 83 =
  38. 38.Double 51 =
  39. 39.Double 58 =
  40. 40.Half of 22 =

Answer key

  1. 148
  2. 52
  3. 64
  4. 104
  5. 50
  6. 57
  7. 19
  8. 146
  9. 76
  10. 82
  11. 41
  12. 91
  13. 22
  14. 184
  15. 29
  16. 31
  17. 30
  18. 71
  19. 38
  20. 122
  21. 136
  22. 182
  23. 12
  24. 190
  25. 94
  26. 74
  27. 82
  28. 32
  29. 94
  30. 54
  31. 26
  32. 46
  33. 172
  34. 64
  35. 22
  36. 48
  37. 166
  38. 102
  39. 116
  40. 11

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