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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 887 · 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 92 =
  2. 2.Half of 142 =
  3. 3.Double 29 =
  4. 4.Half of 164 =
  5. 5.Half of 148 =
  6. 6.Double 93 =
  7. 7.Double 61 =
  8. 8.Double 62 =
  9. 9.Double 84 =
  10. 10.Half of 96 =
  11. 11.Double 25 =
  12. 12.Half of 106 =
  13. 13.Double 79 =
  14. 14.Half of 162 =
  15. 15.Half of 104 =
  16. 16.Half of 144 =
  17. 17.Half of 138 =
  18. 18.Double 24 =
  19. 19.Half of 24 =
  20. 20.Half of 32 =
  21. 21.Half of 14 =
  22. 22.Double 48 =
  23. 23.Half of 52 =
  24. 24.Double 44 =
  25. 25.Double 34 =
  26. 26.Double 46 =
  27. 27.Double 53 =
  28. 28.Half of 82 =
  29. 29.Double 23 =
  30. 30.Half of 186 =
  31. 31.Half of 192 =
  32. 32.Double 47 =
  33. 33.Half of 184 =
  34. 34.Double 36 =
  35. 35.Half of 112 =
  36. 36.Double 27 =
  37. 37.Half of 128 =
  38. 38.Double 69 =
  39. 39.Half of 134 =
  40. 40.Double 35 =

Answer key

  1. 46
  2. 71
  3. 58
  4. 82
  5. 74
  6. 186
  7. 122
  8. 124
  9. 168
  10. 48
  11. 50
  12. 53
  13. 158
  14. 81
  15. 52
  16. 72
  17. 69
  18. 48
  19. 12
  20. 16
  21. 7
  22. 96
  23. 26
  24. 88
  25. 68
  26. 92
  27. 106
  28. 41
  29. 46
  30. 93
  31. 96
  32. 94
  33. 92
  34. 72
  35. 56
  36. 54
  37. 64
  38. 138
  39. 67
  40. 70

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