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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 893 · 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 102 =
  2. 2.Double 22 =
  3. 3.Half of 174 =
  4. 4.Double 49 =
  5. 5.Half of 72 =
  6. 6.Double 46 =
  7. 7.Half of 84 =
  8. 8.Double 41 =
  9. 9.Double 13 =
  10. 10.Half of 176 =
  11. 11.Half of 146 =
  12. 12.Half of 32 =
  13. 13.Half of 168 =
  14. 14.Half of 186 =
  15. 15.Half of 142 =
  16. 16.Double 61 =
  17. 17.Double 74 =
  18. 18.Double 97 =
  19. 19.Half of 192 =
  20. 20.Double 28 =
  21. 21.Double 48 =
  22. 22.Half of 114 =
  23. 23.Double 98 =
  24. 24.Half of 34 =
  25. 25.Half of 134 =
  26. 26.Half of 94 =
  27. 27.Half of 42 =
  28. 28.Half of 106 =
  29. 29.Half of 166 =
  30. 30.Double 95 =
  31. 31.Double 53 =
  32. 32.Double 26 =
  33. 33.Half of 46 =
  34. 34.Double 91 =
  35. 35.Double 14 =
  36. 36.Half of 78 =
  37. 37.Double 76 =
  38. 38.Double 51 =
  39. 39.Double 35 =
  40. 40.Half of 88 =

Answer key

  1. 51
  2. 44
  3. 87
  4. 98
  5. 36
  6. 92
  7. 42
  8. 82
  9. 26
  10. 88
  11. 73
  12. 16
  13. 84
  14. 93
  15. 71
  16. 122
  17. 148
  18. 194
  19. 96
  20. 56
  21. 96
  22. 57
  23. 196
  24. 17
  25. 67
  26. 47
  27. 21
  28. 53
  29. 83
  30. 190
  31. 106
  32. 52
  33. 23
  34. 182
  35. 28
  36. 39
  37. 152
  38. 102
  39. 70
  40. 44

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