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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 437 · 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 182 =
  2. 2.Half of 132 =
  3. 3.Half of 34 =
  4. 4.Double 49 =
  5. 5.Double 87 =
  6. 6.Double 31 =
  7. 7.Half of 114 =
  8. 8.Half of 152 =
  9. 9.Half of 42 =
  10. 10.Double 23 =
  11. 11.Double 36 =
  12. 12.Double 45 =
  13. 13.Half of 134 =
  14. 14.Double 67 =
  15. 15.Half of 44 =
  16. 16.Half of 94 =
  17. 17.Half of 52 =
  18. 18.Double 63 =
  19. 19.Half of 28 =
  20. 20.Half of 16 =
  21. 21.Half of 142 =
  22. 22.Double 13 =
  23. 23.Double 53 =
  24. 24.Double 18 =
  25. 25.Half of 176 =
  26. 26.Double 93 =
  27. 27.Double 81 =
  28. 28.Double 71 =
  29. 29.Double 42 =
  30. 30.Double 75 =
  31. 31.Double 56 =
  32. 32.Half of 86 =
  33. 33.Half of 184 =
  34. 34.Half of 76 =
  35. 35.Double 35 =
  36. 36.Half of 48 =
  37. 37.Half of 36 =
  38. 38.Double 62 =
  39. 39.Half of 118 =
  40. 40.Half of 72 =

Answer key

  1. 91
  2. 66
  3. 17
  4. 98
  5. 174
  6. 62
  7. 57
  8. 76
  9. 21
  10. 46
  11. 72
  12. 90
  13. 67
  14. 134
  15. 22
  16. 47
  17. 26
  18. 126
  19. 14
  20. 8
  21. 71
  22. 26
  23. 106
  24. 36
  25. 88
  26. 186
  27. 162
  28. 142
  29. 84
  30. 150
  31. 112
  32. 43
  33. 92
  34. 38
  35. 70
  36. 24
  37. 18
  38. 124
  39. 59
  40. 36

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