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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 891 · 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 88 =
  2. 2.Double 67 =
  3. 3.Half of 32 =
  4. 4.Half of 94 =
  5. 5.Half of 198 =
  6. 6.Double 23 =
  7. 7.Half of 148 =
  8. 8.Half of 122 =
  9. 9.Double 78 =
  10. 10.Double 11 =
  11. 11.Half of 114 =
  12. 12.Half of 52 =
  13. 13.Half of 128 =
  14. 14.Half of 26 =
  15. 15.Double 94 =
  16. 16.Double 53 =
  17. 17.Double 86 =
  18. 18.Double 31 =
  19. 19.Double 12 =
  20. 20.Double 58 =
  21. 21.Half of 182 =
  22. 22.Half of 12 =
  23. 23.Half of 48 =
  24. 24.Half of 116 =
  25. 25.Double 51 =
  26. 26.Double 46 =
  27. 27.Double 48 =
  28. 28.Double 47 =
  29. 29.Double 42 =
  30. 30.Half of 92 =
  31. 31.Half of 184 =
  32. 32.Double 95 =
  33. 33.Double 15 =
  34. 34.Double 49 =
  35. 35.Double 61 =
  36. 36.Half of 56 =
  37. 37.Half of 18 =
  38. 38.Double 88 =
  39. 39.Half of 38 =
  40. 40.Half of 174 =

Answer key

  1. 44
  2. 134
  3. 16
  4. 47
  5. 99
  6. 46
  7. 74
  8. 61
  9. 156
  10. 22
  11. 57
  12. 26
  13. 64
  14. 13
  15. 188
  16. 106
  17. 172
  18. 62
  19. 24
  20. 116
  21. 91
  22. 6
  23. 24
  24. 58
  25. 102
  26. 92
  27. 96
  28. 94
  29. 84
  30. 46
  31. 92
  32. 190
  33. 30
  34. 98
  35. 122
  36. 28
  37. 9
  38. 176
  39. 19
  40. 87

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