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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 374 · 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 99 =
  2. 2.Double 27 =
  3. 3.Double 74 =
  4. 4.Half of 104 =
  5. 5.Half of 194 =
  6. 6.Half of 112 =
  7. 7.Half of 52 =
  8. 8.Half of 168 =
  9. 9.Double 31 =
  10. 10.Double 33 =
  11. 11.Half of 186 =
  12. 12.Half of 184 =
  13. 13.Half of 44 =
  14. 14.Double 57 =
  15. 15.Double 25 =
  16. 16.Half of 134 =
  17. 17.Double 93 =
  18. 18.Half of 152 =
  19. 19.Double 49 =
  20. 20.Double 12 =
  21. 21.Half of 42 =
  22. 22.Double 88 =
  23. 23.Half of 196 =
  24. 24.Double 73 =
  25. 25.Double 81 =
  26. 26.Double 18 =
  27. 27.Double 85 =
  28. 28.Double 86 =
  29. 29.Double 53 =
  30. 30.Half of 22 =
  31. 31.Half of 132 =
  32. 32.Double 24 =
  33. 33.Half of 176 =
  34. 34.Half of 54 =
  35. 35.Double 32 =
  36. 36.Double 44 =
  37. 37.Half of 148 =
  38. 38.Half of 64 =
  39. 39.Half of 58 =
  40. 40.Half of 46 =

Answer key

  1. 198
  2. 54
  3. 148
  4. 52
  5. 97
  6. 56
  7. 26
  8. 84
  9. 62
  10. 66
  11. 93
  12. 92
  13. 22
  14. 114
  15. 50
  16. 67
  17. 186
  18. 76
  19. 98
  20. 24
  21. 21
  22. 176
  23. 98
  24. 146
  25. 162
  26. 36
  27. 170
  28. 172
  29. 106
  30. 11
  31. 66
  32. 48
  33. 88
  34. 27
  35. 64
  36. 88
  37. 74
  38. 32
  39. 29
  40. 23

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