← Times 4: double, double lesson New set →

Multiply by 4 Worksheet

Maths tricks trick 3: Times 4: double, double · Set 816 · 40 questions
TalentJR

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

NameDateTime takenScore ___ / 40
  1. 1.7 × 4 =
  2. 2.53 × 4 =
  3. 3.35 × 4 =
  4. 4.30 × 4 =
  5. 5.14 × 4 =
  6. 6.52 × 4 =
  7. 7.20 × 4 =
  8. 8.49 × 4 =
  9. 9.11 × 4 =
  10. 10.12 × 4 =
  11. 11.29 × 4 =
  12. 12.31 × 4 =
  13. 13.8 × 4 =
  14. 14.27 × 4 =
  15. 15.59 × 4 =
  16. 16.13 × 4 =
  17. 17.17 × 4 =
  18. 18.28 × 4 =
  19. 19.50 × 4 =
  20. 20.48 × 4 =
  21. 21.39 × 4 =
  22. 22.23 × 4 =
  23. 23.32 × 4 =
  24. 24.16 × 4 =
  25. 25.15 × 4 =
  26. 26.56 × 4 =
  27. 27.9 × 4 =
  28. 28.33 × 4 =
  29. 29.10 × 4 =
  30. 30.54 × 4 =
  31. 31.51 × 4 =
  32. 32.40 × 4 =
  33. 33.34 × 4 =
  34. 34.57 × 4 =
  35. 35.43 × 4 =
  36. 36.47 × 4 =
  37. 37.41 × 4 =
  38. 38.46 × 4 =
  39. 39.60 × 4 =
  40. 40.25 × 4 =

Answer key

  1. 28
  2. 212
  3. 140
  4. 120
  5. 56
  6. 208
  7. 80
  8. 196
  9. 44
  10. 48
  11. 116
  12. 124
  13. 32
  14. 108
  15. 236
  16. 52
  17. 68
  18. 112
  19. 200
  20. 192
  21. 156
  22. 92
  23. 128
  24. 64
  25. 60
  26. 224
  27. 36
  28. 132
  29. 40
  30. 216
  31. 204
  32. 160
  33. 136
  34. 228
  35. 172
  36. 188
  37. 164
  38. 184
  39. 240
  40. 100

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