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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 847 · 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 98 =
  2. 2.Half of 48 =
  3. 3.Half of 78 =
  4. 4.Double 42 =
  5. 5.Half of 86 =
  6. 6.Half of 108 =
  7. 7.Half of 26 =
  8. 8.Double 49 =
  9. 9.Double 26 =
  10. 10.Half of 12 =
  11. 11.Double 65 =
  12. 12.Half of 94 =
  13. 13.Half of 178 =
  14. 14.Double 81 =
  15. 15.Half of 32 =
  16. 16.Half of 114 =
  17. 17.Double 37 =
  18. 18.Double 93 =
  19. 19.Half of 184 =
  20. 20.Double 56 =
  21. 21.Half of 64 =
  22. 22.Double 35 =
  23. 23.Double 79 =
  24. 24.Half of 62 =
  25. 25.Double 44 =
  26. 26.Half of 18 =
  27. 27.Double 36 =
  28. 28.Double 99 =
  29. 29.Half of 22 =
  30. 30.Half of 104 =
  31. 31.Double 21 =
  32. 32.Half of 188 =
  33. 33.Double 32 =
  34. 34.Double 67 =
  35. 35.Half of 192 =
  36. 36.Double 68 =
  37. 37.Half of 142 =
  38. 38.Half of 82 =
  39. 39.Half of 172 =
  40. 40.Double 48 =

Answer key

  1. 196
  2. 24
  3. 39
  4. 84
  5. 43
  6. 54
  7. 13
  8. 98
  9. 52
  10. 6
  11. 130
  12. 47
  13. 89
  14. 162
  15. 16
  16. 57
  17. 74
  18. 186
  19. 92
  20. 112
  21. 32
  22. 70
  23. 158
  24. 31
  25. 88
  26. 9
  27. 72
  28. 198
  29. 11
  30. 52
  31. 42
  32. 94
  33. 64
  34. 134
  35. 96
  36. 136
  37. 71
  38. 41
  39. 86
  40. 96

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