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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 993 · 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 26 =
  2. 2.Half of 92 =
  3. 3.Double 65 =
  4. 4.Double 64 =
  5. 5.Double 92 =
  6. 6.Half of 62 =
  7. 7.Double 98 =
  8. 8.Half of 66 =
  9. 9.Half of 122 =
  10. 10.Double 24 =
  11. 11.Double 73 =
  12. 12.Double 45 =
  13. 13.Half of 96 =
  14. 14.Half of 176 =
  15. 15.Double 47 =
  16. 16.Double 71 =
  17. 17.Double 77 =
  18. 18.Half of 178 =
  19. 19.Half of 94 =
  20. 20.Half of 174 =
  21. 21.Double 18 =
  22. 22.Half of 132 =
  23. 23.Half of 84 =
  24. 24.Half of 188 =
  25. 25.Double 37 =
  26. 26.Half of 64 =
  27. 27.Double 19 =
  28. 28.Double 58 =
  29. 29.Double 22 =
  30. 30.Double 76 =
  31. 31.Half of 52 =
  32. 32.Half of 36 =
  33. 33.Double 82 =
  34. 34.Half of 198 =
  35. 35.Half of 162 =
  36. 36.Double 55 =
  37. 37.Half of 58 =
  38. 38.Double 59 =
  39. 39.Half of 144 =
  40. 40.Double 16 =

Answer key

  1. 13
  2. 46
  3. 130
  4. 128
  5. 184
  6. 31
  7. 196
  8. 33
  9. 61
  10. 48
  11. 146
  12. 90
  13. 48
  14. 88
  15. 94
  16. 142
  17. 154
  18. 89
  19. 47
  20. 87
  21. 36
  22. 66
  23. 42
  24. 94
  25. 74
  26. 32
  27. 38
  28. 116
  29. 44
  30. 152
  31. 26
  32. 18
  33. 164
  34. 99
  35. 81
  36. 110
  37. 29
  38. 118
  39. 72
  40. 32

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