← Times 4: double, double lesson New set →

Multiply by 4 Worksheet

Maths tricks trick 3: Times 4: double, double · Set 140 · 40 questions
TalentJR

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

NameDateTime takenScore ___ / 40
  1. 1.23 × 4 =
  2. 2.48 × 4 =
  3. 3.7 × 4 =
  4. 4.37 × 4 =
  5. 5.44 × 4 =
  6. 6.6 × 4 =
  7. 7.50 × 4 =
  8. 8.39 × 4 =
  9. 9.57 × 4 =
  10. 10.19 × 4 =
  11. 11.8 × 4 =
  12. 12.47 × 4 =
  13. 13.22 × 4 =
  14. 14.16 × 4 =
  15. 15.14 × 4 =
  16. 16.11 × 4 =
  17. 17.10 × 4 =
  18. 18.40 × 4 =
  19. 19.55 × 4 =
  20. 20.15 × 4 =
  21. 21.36 × 4 =
  22. 22.49 × 4 =
  23. 23.42 × 4 =
  24. 24.41 × 4 =
  25. 25.27 × 4 =
  26. 26.45 × 4 =
  27. 27.9 × 4 =
  28. 28.54 × 4 =
  29. 29.24 × 4 =
  30. 30.51 × 4 =
  31. 31.46 × 4 =
  32. 32.20 × 4 =
  33. 33.33 × 4 =
  34. 34.56 × 4 =
  35. 35.21 × 4 =
  36. 36.18 × 4 =
  37. 37.17 × 4 =
  38. 38.34 × 4 =
  39. 39.60 × 4 =
  40. 40.28 × 4 =

Answer key

  1. 92
  2. 192
  3. 28
  4. 148
  5. 176
  6. 24
  7. 200
  8. 156
  9. 228
  10. 76
  11. 32
  12. 188
  13. 88
  14. 64
  15. 56
  16. 44
  17. 40
  18. 160
  19. 220
  20. 60
  21. 144
  22. 196
  23. 168
  24. 164
  25. 108
  26. 180
  27. 36
  28. 216
  29. 96
  30. 204
  31. 184
  32. 80
  33. 132
  34. 224
  35. 84
  36. 72
  37. 68
  38. 136
  39. 240
  40. 112

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