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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 925 · 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 53 =
  2. 2.Double 12 =
  3. 3.Half of 132 =
  4. 4.Double 98 =
  5. 5.Half of 192 =
  6. 6.Half of 68 =
  7. 7.Half of 96 =
  8. 8.Double 88 =
  9. 9.Double 73 =
  10. 10.Half of 188 =
  11. 11.Half of 52 =
  12. 12.Half of 56 =
  13. 13.Double 95 =
  14. 14.Half of 142 =
  15. 15.Half of 32 =
  16. 16.Double 25 =
  17. 17.Double 69 =
  18. 18.Half of 62 =
  19. 19.Half of 72 =
  20. 20.Half of 92 =
  21. 21.Half of 112 =
  22. 22.Half of 128 =
  23. 23.Double 46 =
  24. 24.Half of 82 =
  25. 25.Double 58 =
  26. 26.Double 48 =
  27. 27.Double 11 =
  28. 28.Half of 122 =
  29. 29.Half of 164 =
  30. 30.Half of 86 =
  31. 31.Half of 28 =
  32. 32.Half of 158 =
  33. 33.Half of 74 =
  34. 34.Double 86 =
  35. 35.Double 35 =
  36. 36.Half of 162 =
  37. 37.Double 87 =
  38. 38.Double 31 =
  39. 39.Double 15 =
  40. 40.Half of 36 =

Answer key

  1. 106
  2. 24
  3. 66
  4. 196
  5. 96
  6. 34
  7. 48
  8. 176
  9. 146
  10. 94
  11. 26
  12. 28
  13. 190
  14. 71
  15. 16
  16. 50
  17. 138
  18. 31
  19. 36
  20. 46
  21. 56
  22. 64
  23. 92
  24. 41
  25. 116
  26. 96
  27. 22
  28. 61
  29. 82
  30. 43
  31. 14
  32. 79
  33. 37
  34. 172
  35. 70
  36. 81
  37. 174
  38. 62
  39. 30
  40. 18

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