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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 862 · 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 118 =
  2. 2.Double 43 =
  3. 3.Double 72 =
  4. 4.Double 63 =
  5. 5.Half of 166 =
  6. 6.Half of 142 =
  7. 7.Double 34 =
  8. 8.Double 51 =
  9. 9.Double 26 =
  10. 10.Half of 44 =
  11. 11.Double 17 =
  12. 12.Half of 168 =
  13. 13.Half of 62 =
  14. 14.Half of 102 =
  15. 15.Half of 84 =
  16. 16.Double 95 =
  17. 17.Half of 136 =
  18. 18.Half of 48 =
  19. 19.Double 48 =
  20. 20.Half of 138 =
  21. 21.Double 68 =
  22. 22.Double 24 =
  23. 23.Double 53 =
  24. 24.Half of 92 =
  25. 25.Double 47 =
  26. 26.Double 81 =
  27. 27.Double 22 =
  28. 28.Half of 186 =
  29. 29.Half of 16 =
  30. 30.Double 21 =
  31. 31.Double 83 =
  32. 32.Half of 178 =
  33. 33.Double 11 =
  34. 34.Half of 144 =
  35. 35.Double 98 =
  36. 36.Double 58 =
  37. 37.Double 41 =
  38. 38.Half of 172 =
  39. 39.Half of 78 =
  40. 40.Double 42 =

Answer key

  1. 59
  2. 86
  3. 144
  4. 126
  5. 83
  6. 71
  7. 68
  8. 102
  9. 52
  10. 22
  11. 34
  12. 84
  13. 31
  14. 51
  15. 42
  16. 190
  17. 68
  18. 24
  19. 96
  20. 69
  21. 136
  22. 48
  23. 106
  24. 46
  25. 94
  26. 162
  27. 44
  28. 93
  29. 8
  30. 42
  31. 166
  32. 89
  33. 22
  34. 72
  35. 196
  36. 116
  37. 82
  38. 86
  39. 39
  40. 84

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