← Times 4: double, double lesson New set →

Multiply by 4 Worksheet

Maths tricks trick 3: Times 4: double, double · Set 121 · 40 questions
TalentJR

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

NameDateTime takenScore ___ / 40
  1. 1.38 × 4 =
  2. 2.9 × 4 =
  3. 3.15 × 4 =
  4. 4.19 × 4 =
  5. 5.22 × 4 =
  6. 6.46 × 4 =
  7. 7.27 × 4 =
  8. 8.47 × 4 =
  9. 9.55 × 4 =
  10. 10.50 × 4 =
  11. 11.12 × 4 =
  12. 12.45 × 4 =
  13. 13.40 × 4 =
  14. 14.10 × 4 =
  15. 15.14 × 4 =
  16. 16.20 × 4 =
  17. 17.57 × 4 =
  18. 18.29 × 4 =
  19. 19.41 × 4 =
  20. 20.42 × 4 =
  21. 21.59 × 4 =
  22. 22.16 × 4 =
  23. 23.60 × 4 =
  24. 24.17 × 4 =
  25. 25.21 × 4 =
  26. 26.11 × 4 =
  27. 27.24 × 4 =
  28. 28.8 × 4 =
  29. 29.28 × 4 =
  30. 30.48 × 4 =
  31. 31.39 × 4 =
  32. 32.52 × 4 =
  33. 33.30 × 4 =
  34. 34.18 × 4 =
  35. 35.36 × 4 =
  36. 36.43 × 4 =
  37. 37.25 × 4 =
  38. 38.37 × 4 =
  39. 39.49 × 4 =
  40. 40.54 × 4 =

Answer key

  1. 152
  2. 36
  3. 60
  4. 76
  5. 88
  6. 184
  7. 108
  8. 188
  9. 220
  10. 200
  11. 48
  12. 180
  13. 160
  14. 40
  15. 56
  16. 80
  17. 228
  18. 116
  19. 164
  20. 168
  21. 236
  22. 64
  23. 240
  24. 68
  25. 84
  26. 44
  27. 96
  28. 32
  29. 112
  30. 192
  31. 156
  32. 208
  33. 120
  34. 72
  35. 144
  36. 172
  37. 100
  38. 148
  39. 196
  40. 216

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