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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 490 · 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 178 =
  2. 2.Half of 92 =
  3. 3.Half of 42 =
  4. 4.Double 74 =
  5. 5.Double 88 =
  6. 6.Half of 64 =
  7. 7.Double 79 =
  8. 8.Double 17 =
  9. 9.Double 58 =
  10. 10.Double 34 =
  11. 11.Double 75 =
  12. 12.Half of 118 =
  13. 13.Double 29 =
  14. 14.Half of 14 =
  15. 15.Double 99 =
  16. 16.Double 49 =
  17. 17.Double 87 =
  18. 18.Half of 188 =
  19. 19.Half of 88 =
  20. 20.Double 24 =
  21. 21.Half of 116 =
  22. 22.Double 61 =
  23. 23.Double 71 =
  24. 24.Double 81 =
  25. 25.Half of 84 =
  26. 26.Half of 192 =
  27. 27.Half of 28 =
  28. 28.Double 33 =
  29. 29.Double 47 =
  30. 30.Double 62 =
  31. 31.Double 91 =
  32. 32.Half of 76 =
  33. 33.Double 39 =
  34. 34.Double 14 =
  35. 35.Half of 44 =
  36. 36.Half of 102 =
  37. 37.Double 96 =
  38. 38.Double 65 =
  39. 39.Half of 56 =
  40. 40.Half of 104 =

Answer key

  1. 89
  2. 46
  3. 21
  4. 148
  5. 176
  6. 32
  7. 158
  8. 34
  9. 116
  10. 68
  11. 150
  12. 59
  13. 58
  14. 7
  15. 198
  16. 98
  17. 174
  18. 94
  19. 44
  20. 48
  21. 58
  22. 122
  23. 142
  24. 162
  25. 42
  26. 96
  27. 14
  28. 66
  29. 94
  30. 124
  31. 182
  32. 38
  33. 78
  34. 28
  35. 22
  36. 51
  37. 192
  38. 130
  39. 28
  40. 52

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