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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 476 · 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 46 =
  2. 2.Double 93 =
  3. 3.Half of 66 =
  4. 4.Half of 198 =
  5. 5.Double 65 =
  6. 6.Half of 48 =
  7. 7.Half of 68 =
  8. 8.Double 79 =
  9. 9.Double 16 =
  10. 10.Half of 98 =
  11. 11.Half of 58 =
  12. 12.Double 18 =
  13. 13.Half of 196 =
  14. 14.Double 91 =
  15. 15.Half of 22 =
  16. 16.Double 47 =
  17. 17.Double 22 =
  18. 18.Half of 122 =
  19. 19.Half of 76 =
  20. 20.Half of 72 =
  21. 21.Double 87 =
  22. 22.Double 74 =
  23. 23.Half of 108 =
  24. 24.Double 63 =
  25. 25.Double 41 =
  26. 26.Half of 94 =
  27. 27.Double 71 =
  28. 28.Double 48 =
  29. 29.Half of 14 =
  30. 30.Double 96 =
  31. 31.Half of 96 =
  32. 32.Double 33 =
  33. 33.Double 35 =
  34. 34.Half of 56 =
  35. 35.Double 42 =
  36. 36.Double 21 =
  37. 37.Double 73 =
  38. 38.Double 14 =
  39. 39.Double 31 =
  40. 40.Double 24 =

Answer key

  1. 23
  2. 186
  3. 33
  4. 99
  5. 130
  6. 24
  7. 34
  8. 158
  9. 32
  10. 49
  11. 29
  12. 36
  13. 98
  14. 182
  15. 11
  16. 94
  17. 44
  18. 61
  19. 38
  20. 36
  21. 174
  22. 148
  23. 54
  24. 126
  25. 82
  26. 47
  27. 142
  28. 96
  29. 7
  30. 192
  31. 48
  32. 66
  33. 70
  34. 28
  35. 84
  36. 42
  37. 146
  38. 28
  39. 62
  40. 48

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