← Times 4: double, double lesson New set →

Multiply by 4 Worksheet

Maths tricks trick 3: Times 4: double, double · Set 649 · 40 questions
TalentJR

The trick (Double double): Double the number. Double the answer again. That is the number × 4.

NameDateTime takenScore ___ / 40
  1. 1.57 × 4 =
  2. 2.17 × 4 =
  3. 3.16 × 4 =
  4. 4.21 × 4 =
  5. 5.55 × 4 =
  6. 6.41 × 4 =
  7. 7.13 × 4 =
  8. 8.36 × 4 =
  9. 9.18 × 4 =
  10. 10.42 × 4 =
  11. 11.33 × 4 =
  12. 12.34 × 4 =
  13. 13.20 × 4 =
  14. 14.8 × 4 =
  15. 15.27 × 4 =
  16. 16.43 × 4 =
  17. 17.35 × 4 =
  18. 18.15 × 4 =
  19. 19.11 × 4 =
  20. 20.51 × 4 =
  21. 21.14 × 4 =
  22. 22.53 × 4 =
  23. 23.59 × 4 =
  24. 24.39 × 4 =
  25. 25.47 × 4 =
  26. 26.40 × 4 =
  27. 27.32 × 4 =
  28. 28.19 × 4 =
  29. 29.46 × 4 =
  30. 30.60 × 4 =
  31. 31.7 × 4 =
  32. 32.31 × 4 =
  33. 33.22 × 4 =
  34. 34.30 × 4 =
  35. 35.26 × 4 =
  36. 36.38 × 4 =
  37. 37.24 × 4 =
  38. 38.29 × 4 =
  39. 39.49 × 4 =
  40. 40.9 × 4 =

Answer key

  1. 228
  2. 68
  3. 64
  4. 84
  5. 220
  6. 164
  7. 52
  8. 144
  9. 72
  10. 168
  11. 132
  12. 136
  13. 80
  14. 32
  15. 108
  16. 172
  17. 140
  18. 60
  19. 44
  20. 204
  21. 56
  22. 212
  23. 236
  24. 156
  25. 188
  26. 160
  27. 128
  28. 76
  29. 184
  30. 240
  31. 28
  32. 124
  33. 88
  34. 120
  35. 104
  36. 152
  37. 96
  38. 116
  39. 196
  40. 36

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