← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 416 · 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 31 =
  2. 2.Double 88 =
  3. 3.Double 59 =
  4. 4.Half of 22 =
  5. 5.Double 16 =
  6. 6.Half of 66 =
  7. 7.Double 45 =
  8. 8.Double 12 =
  9. 9.Half of 148 =
  10. 10.Double 54 =
  11. 11.Double 99 =
  12. 12.Half of 78 =
  13. 13.Double 26 =
  14. 14.Half of 48 =
  15. 15.Double 19 =
  16. 16.Double 81 =
  17. 17.Double 63 =
  18. 18.Half of 124 =
  19. 19.Double 95 =
  20. 20.Double 38 =
  21. 21.Half of 52 =
  22. 22.Double 47 =
  23. 23.Half of 86 =
  24. 24.Double 35 =
  25. 25.Double 34 =
  26. 26.Double 84 =
  27. 27.Half of 192 =
  28. 28.Double 74 =
  29. 29.Double 32 =
  30. 30.Double 51 =
  31. 31.Double 75 =
  32. 32.Half of 46 =
  33. 33.Half of 76 =
  34. 34.Half of 42 =
  35. 35.Half of 74 =
  36. 36.Half of 182 =
  37. 37.Half of 128 =
  38. 38.Double 69 =
  39. 39.Double 76 =
  40. 40.Half of 146 =

Answer key

  1. 62
  2. 176
  3. 118
  4. 11
  5. 32
  6. 33
  7. 90
  8. 24
  9. 74
  10. 108
  11. 198
  12. 39
  13. 52
  14. 24
  15. 38
  16. 162
  17. 126
  18. 62
  19. 190
  20. 76
  21. 26
  22. 94
  23. 43
  24. 70
  25. 68
  26. 168
  27. 96
  28. 148
  29. 64
  30. 102
  31. 150
  32. 23
  33. 38
  34. 21
  35. 37
  36. 91
  37. 64
  38. 138
  39. 152
  40. 73

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