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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 988 · 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 12 =
  2. 2.Half of 134 =
  3. 3.Double 71 =
  4. 4.Double 25 =
  5. 5.Half of 198 =
  6. 6.Double 46 =
  7. 7.Half of 112 =
  8. 8.Double 41 =
  9. 9.Double 56 =
  10. 10.Half of 132 =
  11. 11.Half of 172 =
  12. 12.Half of 22 =
  13. 13.Double 97 =
  14. 14.Half of 122 =
  15. 15.Double 89 =
  16. 16.Double 86 =
  17. 17.Half of 42 =
  18. 18.Double 49 =
  19. 19.Half of 162 =
  20. 20.Double 82 =
  21. 21.Half of 68 =
  22. 22.Double 59 =
  23. 23.Half of 164 =
  24. 24.Double 53 =
  25. 25.Half of 146 =
  26. 26.Half of 88 =
  27. 27.Double 47 =
  28. 28.Double 66 =
  29. 29.Half of 192 =
  30. 30.Double 51 =
  31. 31.Half of 58 =
  32. 32.Half of 64 =
  33. 33.Double 57 =
  34. 34.Double 52 =
  35. 35.Double 29 =
  36. 36.Double 48 =
  37. 37.Double 37 =
  38. 38.Double 87 =
  39. 39.Double 65 =
  40. 40.Half of 92 =

Answer key

  1. 6
  2. 67
  3. 142
  4. 50
  5. 99
  6. 92
  7. 56
  8. 82
  9. 112
  10. 66
  11. 86
  12. 11
  13. 194
  14. 61
  15. 178
  16. 172
  17. 21
  18. 98
  19. 81
  20. 164
  21. 34
  22. 118
  23. 82
  24. 106
  25. 73
  26. 44
  27. 94
  28. 132
  29. 96
  30. 102
  31. 29
  32. 32
  33. 114
  34. 104
  35. 58
  36. 96
  37. 74
  38. 174
  39. 130
  40. 46

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