← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 257 · 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 74 =
  2. 2.Double 49 =
  3. 3.Double 35 =
  4. 4.Half of 116 =
  5. 5.Half of 64 =
  6. 6.Double 62 =
  7. 7.Double 21 =
  8. 8.Double 18 =
  9. 9.Double 24 =
  10. 10.Half of 72 =
  11. 11.Double 34 =
  12. 12.Double 27 =
  13. 13.Half of 108 =
  14. 14.Double 15 =
  15. 15.Double 97 =
  16. 16.Double 29 =
  17. 17.Half of 82 =
  18. 18.Half of 84 =
  19. 19.Half of 128 =
  20. 20.Double 91 =
  21. 21.Half of 192 =
  22. 22.Double 79 =
  23. 23.Double 39 =
  24. 24.Half of 124 =
  25. 25.Half of 58 =
  26. 26.Double 42 =
  27. 27.Half of 92 =
  28. 28.Double 84 =
  29. 29.Half of 126 =
  30. 30.Half of 182 =
  31. 31.Half of 122 =
  32. 32.Double 67 =
  33. 33.Double 94 =
  34. 34.Half of 132 =
  35. 35.Half of 106 =
  36. 36.Double 23 =
  37. 37.Half of 14 =
  38. 38.Half of 146 =
  39. 39.Double 93 =
  40. 40.Double 19 =

Answer key

  1. 148
  2. 98
  3. 70
  4. 58
  5. 32
  6. 124
  7. 42
  8. 36
  9. 48
  10. 36
  11. 68
  12. 54
  13. 54
  14. 30
  15. 194
  16. 58
  17. 41
  18. 42
  19. 64
  20. 182
  21. 96
  22. 158
  23. 78
  24. 62
  25. 29
  26. 84
  27. 46
  28. 168
  29. 63
  30. 91
  31. 61
  32. 134
  33. 188
  34. 66
  35. 53
  36. 46
  37. 7
  38. 73
  39. 186
  40. 38

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