← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 843 · 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 67 =
  2. 2.Half of 138 =
  3. 3.Half of 82 =
  4. 4.Double 99 =
  5. 5.Half of 142 =
  6. 6.Half of 162 =
  7. 7.Double 21 =
  8. 8.Half of 158 =
  9. 9.Half of 42 =
  10. 10.Double 84 =
  11. 11.Double 83 =
  12. 12.Half of 196 =
  13. 13.Double 48 =
  14. 14.Double 39 =
  15. 15.Double 78 =
  16. 16.Double 94 =
  17. 17.Half of 96 =
  18. 18.Half of 56 =
  19. 19.Double 17 =
  20. 20.Double 86 =
  21. 21.Double 52 =
  22. 22.Half of 16 =
  23. 23.Half of 112 =
  24. 24.Double 18 =
  25. 25.Double 22 =
  26. 26.Half of 136 =
  27. 27.Half of 94 =
  28. 28.Half of 114 =
  29. 29.Half of 88 =
  30. 30.Double 19 =
  31. 31.Double 27 =
  32. 32.Double 42 =
  33. 33.Half of 132 =
  34. 34.Double 97 =
  35. 35.Double 58 =
  36. 36.Double 87 =
  37. 37.Double 88 =
  38. 38.Double 85 =
  39. 39.Half of 34 =
  40. 40.Double 71 =

Answer key

  1. 134
  2. 69
  3. 41
  4. 198
  5. 71
  6. 81
  7. 42
  8. 79
  9. 21
  10. 168
  11. 166
  12. 98
  13. 96
  14. 78
  15. 156
  16. 188
  17. 48
  18. 28
  19. 34
  20. 172
  21. 104
  22. 8
  23. 56
  24. 36
  25. 44
  26. 68
  27. 47
  28. 57
  29. 44
  30. 38
  31. 54
  32. 84
  33. 66
  34. 194
  35. 116
  36. 174
  37. 176
  38. 170
  39. 17
  40. 142

Free maths tricks lessons, practice and worksheets at talentjr.in/maths-tricks