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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 770 · 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 81 =
  2. 2.Double 59 =
  3. 3.Double 64 =
  4. 4.Half of 142 =
  5. 5.Double 21 =
  6. 6.Double 99 =
  7. 7.Double 88 =
  8. 8.Double 72 =
  9. 9.Double 45 =
  10. 10.Half of 168 =
  11. 11.Half of 172 =
  12. 12.Half of 126 =
  13. 13.Double 86 =
  14. 14.Half of 98 =
  15. 15.Double 32 =
  16. 16.Double 31 =
  17. 17.Half of 32 =
  18. 18.Half of 38 =
  19. 19.Half of 14 =
  20. 20.Half of 174 =
  21. 21.Half of 138 =
  22. 22.Half of 52 =
  23. 23.Half of 62 =
  24. 24.Double 56 =
  25. 25.Double 53 =
  26. 26.Half of 92 =
  27. 27.Double 13 =
  28. 28.Double 75 =
  29. 29.Half of 42 =
  30. 30.Half of 36 =
  31. 31.Half of 134 =
  32. 32.Double 14 =
  33. 33.Double 47 =
  34. 34.Double 95 =
  35. 35.Double 39 =
  36. 36.Half of 112 =
  37. 37.Double 22 =
  38. 38.Double 23 =
  39. 39.Half of 194 =
  40. 40.Half of 56 =

Answer key

  1. 162
  2. 118
  3. 128
  4. 71
  5. 42
  6. 198
  7. 176
  8. 144
  9. 90
  10. 84
  11. 86
  12. 63
  13. 172
  14. 49
  15. 64
  16. 62
  17. 16
  18. 19
  19. 7
  20. 87
  21. 69
  22. 26
  23. 31
  24. 112
  25. 106
  26. 46
  27. 26
  28. 150
  29. 21
  30. 18
  31. 67
  32. 28
  33. 94
  34. 190
  35. 78
  36. 56
  37. 44
  38. 46
  39. 97
  40. 28

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