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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 974 · 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 88 =
  2. 2.Double 91 =
  3. 3.Half of 104 =
  4. 4.Half of 178 =
  5. 5.Double 36 =
  6. 6.Double 45 =
  7. 7.Double 46 =
  8. 8.Half of 114 =
  9. 9.Double 68 =
  10. 10.Double 23 =
  11. 11.Half of 84 =
  12. 12.Double 49 =
  13. 13.Double 18 =
  14. 14.Half of 22 =
  15. 15.Double 53 =
  16. 16.Half of 106 =
  17. 17.Half of 126 =
  18. 18.Double 41 =
  19. 19.Double 59 =
  20. 20.Double 87 =
  21. 21.Half of 62 =
  22. 22.Double 92 =
  23. 23.Double 71 =
  24. 24.Half of 108 =
  25. 25.Half of 58 =
  26. 26.Double 35 =
  27. 27.Double 62 =
  28. 28.Double 17 =
  29. 29.Half of 188 =
  30. 30.Half of 166 =
  31. 31.Half of 94 =
  32. 32.Half of 128 =
  33. 33.Half of 152 =
  34. 34.Half of 156 =
  35. 35.Double 43 =
  36. 36.Double 67 =
  37. 37.Half of 184 =
  38. 38.Half of 52 =
  39. 39.Half of 134 =
  40. 40.Half of 142 =

Answer key

  1. 176
  2. 182
  3. 52
  4. 89
  5. 72
  6. 90
  7. 92
  8. 57
  9. 136
  10. 46
  11. 42
  12. 98
  13. 36
  14. 11
  15. 106
  16. 53
  17. 63
  18. 82
  19. 118
  20. 174
  21. 31
  22. 184
  23. 142
  24. 54
  25. 29
  26. 70
  27. 124
  28. 34
  29. 94
  30. 83
  31. 47
  32. 64
  33. 76
  34. 78
  35. 86
  36. 134
  37. 92
  38. 26
  39. 67
  40. 71

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