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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 916 · 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 58 =
  2. 2.Half of 122 =
  3. 3.Half of 142 =
  4. 4.Double 54 =
  5. 5.Double 74 =
  6. 6.Half of 176 =
  7. 7.Double 95 =
  8. 8.Half of 132 =
  9. 9.Double 29 =
  10. 10.Double 18 =
  11. 11.Half of 34 =
  12. 12.Double 53 =
  13. 13.Double 16 =
  14. 14.Half of 196 =
  15. 15.Half of 154 =
  16. 16.Half of 198 =
  17. 17.Double 84 =
  18. 18.Double 86 =
  19. 19.Half of 28 =
  20. 20.Double 34 =
  21. 21.Half of 72 =
  22. 22.Double 63 =
  23. 23.Double 81 =
  24. 24.Double 13 =
  25. 25.Double 41 =
  26. 26.Double 94 =
  27. 27.Double 15 =
  28. 28.Double 22 =
  29. 29.Double 56 =
  30. 30.Double 48 =
  31. 31.Double 49 =
  32. 32.Half of 62 =
  33. 33.Double 25 =
  34. 34.Half of 124 =
  35. 35.Half of 44 =
  36. 36.Double 61 =
  37. 37.Half of 52 =
  38. 38.Double 87 =
  39. 39.Half of 66 =
  40. 40.Half of 146 =

Answer key

  1. 29
  2. 61
  3. 71
  4. 108
  5. 148
  6. 88
  7. 190
  8. 66
  9. 58
  10. 36
  11. 17
  12. 106
  13. 32
  14. 98
  15. 77
  16. 99
  17. 168
  18. 172
  19. 14
  20. 68
  21. 36
  22. 126
  23. 162
  24. 26
  25. 82
  26. 188
  27. 30
  28. 44
  29. 112
  30. 96
  31. 98
  32. 31
  33. 50
  34. 62
  35. 22
  36. 122
  37. 26
  38. 174
  39. 33
  40. 73

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