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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 968 · 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 32 =
  2. 2.Half of 58 =
  3. 3.Half of 132 =
  4. 4.Double 16 =
  5. 5.Half of 34 =
  6. 6.Half of 94 =
  7. 7.Half of 66 =
  8. 8.Half of 172 =
  9. 9.Double 14 =
  10. 10.Half of 18 =
  11. 11.Half of 186 =
  12. 12.Double 18 =
  13. 13.Half of 192 =
  14. 14.Double 96 =
  15. 15.Double 45 =
  16. 16.Half of 42 =
  17. 17.Half of 92 =
  18. 18.Half of 98 =
  19. 19.Half of 46 =
  20. 20.Half of 112 =
  21. 21.Double 84 =
  22. 22.Double 43 =
  23. 23.Double 13 =
  24. 24.Double 22 =
  25. 25.Half of 28 =
  26. 26.Double 33 =
  27. 27.Half of 62 =
  28. 28.Double 53 =
  29. 29.Double 21 =
  30. 30.Half of 64 =
  31. 31.Half of 68 =
  32. 32.Double 27 =
  33. 33.Double 54 =
  34. 34.Half of 36 =
  35. 35.Half of 148 =
  36. 36.Half of 118 =
  37. 37.Double 86 =
  38. 38.Half of 194 =
  39. 39.Half of 52 =
  40. 40.Double 42 =

Answer key

  1. 64
  2. 29
  3. 66
  4. 32
  5. 17
  6. 47
  7. 33
  8. 86
  9. 28
  10. 9
  11. 93
  12. 36
  13. 96
  14. 192
  15. 90
  16. 21
  17. 46
  18. 49
  19. 23
  20. 56
  21. 168
  22. 86
  23. 26
  24. 44
  25. 14
  26. 66
  27. 31
  28. 106
  29. 42
  30. 32
  31. 34
  32. 54
  33. 108
  34. 18
  35. 74
  36. 59
  37. 172
  38. 97
  39. 26
  40. 84

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