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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 131 · 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 194 =
  2. 2.Half of 132 =
  3. 3.Double 59 =
  4. 4.Double 95 =
  5. 5.Half of 14 =
  6. 6.Double 43 =
  7. 7.Half of 112 =
  8. 8.Double 54 =
  9. 9.Half of 48 =
  10. 10.Double 31 =
  11. 11.Double 74 =
  12. 12.Double 91 =
  13. 13.Half of 188 =
  14. 14.Half of 176 =
  15. 15.Double 33 =
  16. 16.Half of 144 =
  17. 17.Half of 162 =
  18. 18.Double 86 =
  19. 19.Double 19 =
  20. 20.Half of 116 =
  21. 21.Half of 122 =
  22. 22.Double 13 =
  23. 23.Double 52 =
  24. 24.Half of 106 =
  25. 25.Half of 156 =
  26. 26.Half of 32 =
  27. 27.Half of 84 =
  28. 28.Double 39 =
  29. 29.Double 99 =
  30. 30.Double 25 =
  31. 31.Double 75 =
  32. 32.Double 93 =
  33. 33.Double 61 =
  34. 34.Double 14 =
  35. 35.Half of 54 =
  36. 36.Double 63 =
  37. 37.Double 62 =
  38. 38.Half of 146 =
  39. 39.Double 32 =
  40. 40.Double 67 =

Answer key

  1. 97
  2. 66
  3. 118
  4. 190
  5. 7
  6. 86
  7. 56
  8. 108
  9. 24
  10. 62
  11. 148
  12. 182
  13. 94
  14. 88
  15. 66
  16. 72
  17. 81
  18. 172
  19. 38
  20. 58
  21. 61
  22. 26
  23. 104
  24. 53
  25. 78
  26. 16
  27. 42
  28. 78
  29. 198
  30. 50
  31. 150
  32. 186
  33. 122
  34. 28
  35. 27
  36. 126
  37. 124
  38. 73
  39. 64
  40. 134

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