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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 937 · 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 59 =
  2. 2.Half of 128 =
  3. 3.Double 23 =
  4. 4.Double 19 =
  5. 5.Half of 152 =
  6. 6.Half of 182 =
  7. 7.Double 71 =
  8. 8.Double 77 =
  9. 9.Half of 46 =
  10. 10.Double 12 =
  11. 11.Half of 42 =
  12. 12.Half of 188 =
  13. 13.Double 13 =
  14. 14.Double 63 =
  15. 15.Double 47 =
  16. 16.Half of 44 =
  17. 17.Double 76 =
  18. 18.Half of 158 =
  19. 19.Double 35 =
  20. 20.Half of 32 =
  21. 21.Double 79 =
  22. 22.Half of 96 =
  23. 23.Double 46 =
  24. 24.Double 88 =
  25. 25.Double 31 =
  26. 26.Half of 52 =
  27. 27.Double 17 =
  28. 28.Half of 138 =
  29. 29.Half of 72 =
  30. 30.Half of 86 =
  31. 31.Half of 28 =
  32. 32.Double 11 =
  33. 33.Half of 184 =
  34. 34.Half of 132 =
  35. 35.Half of 178 =
  36. 36.Double 37 =
  37. 37.Double 45 =
  38. 38.Half of 92 =
  39. 39.Half of 34 =
  40. 40.Half of 192 =

Answer key

  1. 118
  2. 64
  3. 46
  4. 38
  5. 76
  6. 91
  7. 142
  8. 154
  9. 23
  10. 24
  11. 21
  12. 94
  13. 26
  14. 126
  15. 94
  16. 22
  17. 152
  18. 79
  19. 70
  20. 16
  21. 158
  22. 48
  23. 92
  24. 176
  25. 62
  26. 26
  27. 34
  28. 69
  29. 36
  30. 43
  31. 14
  32. 22
  33. 92
  34. 66
  35. 89
  36. 74
  37. 90
  38. 46
  39. 17
  40. 96

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