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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 990 · 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 146 =
  2. 2.Half of 178 =
  3. 3.Half of 16 =
  4. 4.Half of 142 =
  5. 5.Half of 62 =
  6. 6.Double 78 =
  7. 7.Half of 66 =
  8. 8.Half of 78 =
  9. 9.Double 93 =
  10. 10.Double 19 =
  11. 11.Half of 112 =
  12. 12.Half of 174 =
  13. 13.Double 23 =
  14. 14.Double 38 =
  15. 15.Half of 164 =
  16. 16.Double 97 =
  17. 17.Half of 12 =
  18. 18.Double 63 =
  19. 19.Half of 94 =
  20. 20.Double 54 =
  21. 21.Double 26 =
  22. 22.Half of 14 =
  23. 23.Half of 52 =
  24. 24.Double 45 =
  25. 25.Half of 68 =
  26. 26.Double 75 =
  27. 27.Half of 32 =
  28. 28.Half of 134 =
  29. 29.Double 33 =
  30. 30.Double 52 =
  31. 31.Half of 144 =
  32. 32.Half of 56 =
  33. 33.Double 74 =
  34. 34.Double 66 =
  35. 35.Double 62 =
  36. 36.Half of 18 =
  37. 37.Half of 162 =
  38. 38.Double 43 =
  39. 39.Double 79 =
  40. 40.Half of 184 =

Answer key

  1. 73
  2. 89
  3. 8
  4. 71
  5. 31
  6. 156
  7. 33
  8. 39
  9. 186
  10. 38
  11. 56
  12. 87
  13. 46
  14. 76
  15. 82
  16. 194
  17. 6
  18. 126
  19. 47
  20. 108
  21. 52
  22. 7
  23. 26
  24. 90
  25. 34
  26. 150
  27. 16
  28. 67
  29. 66
  30. 104
  31. 72
  32. 28
  33. 148
  34. 132
  35. 124
  36. 9
  37. 81
  38. 86
  39. 158
  40. 92

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