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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 958 · 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 35 =
  2. 2.Half of 188 =
  3. 3.Half of 126 =
  4. 4.Half of 62 =
  5. 5.Double 63 =
  6. 6.Double 56 =
  7. 7.Double 99 =
  8. 8.Half of 36 =
  9. 9.Double 89 =
  10. 10.Half of 154 =
  11. 11.Double 29 =
  12. 12.Double 96 =
  13. 13.Double 57 =
  14. 14.Double 31 =
  15. 15.Double 73 =
  16. 16.Double 68 =
  17. 17.Double 16 =
  18. 18.Half of 142 =
  19. 19.Double 62 =
  20. 20.Double 91 =
  21. 21.Half of 56 =
  22. 22.Double 51 =
  23. 23.Half of 186 =
  24. 24.Half of 42 =
  25. 25.Half of 144 =
  26. 26.Double 82 =
  27. 27.Half of 58 =
  28. 28.Double 28 =
  29. 29.Half of 102 =
  30. 30.Half of 162 =
  31. 31.Double 25 =
  32. 32.Double 21 =
  33. 33.Half of 16 =
  34. 34.Double 64 =
  35. 35.Double 84 =
  36. 36.Half of 46 =
  37. 37.Half of 18 =
  38. 38.Double 97 =
  39. 39.Half of 128 =
  40. 40.Half of 22 =

Answer key

  1. 70
  2. 94
  3. 63
  4. 31
  5. 126
  6. 112
  7. 198
  8. 18
  9. 178
  10. 77
  11. 58
  12. 192
  13. 114
  14. 62
  15. 146
  16. 136
  17. 32
  18. 71
  19. 124
  20. 182
  21. 28
  22. 102
  23. 93
  24. 21
  25. 72
  26. 164
  27. 29
  28. 56
  29. 51
  30. 81
  31. 50
  32. 42
  33. 8
  34. 128
  35. 168
  36. 23
  37. 9
  38. 194
  39. 64
  40. 11

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