← Times 4: double, double lesson New set →

Multiply by 4 Worksheet

Maths tricks trick 3: Times 4: double, double · Set 224 · 40 questions
TalentJR

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

NameDateTime takenScore ___ / 40
  1. 1.41 × 4 =
  2. 2.42 × 4 =
  3. 3.11 × 4 =
  4. 4.51 × 4 =
  5. 5.48 × 4 =
  6. 6.18 × 4 =
  7. 7.53 × 4 =
  8. 8.44 × 4 =
  9. 9.38 × 4 =
  10. 10.35 × 4 =
  11. 11.14 × 4 =
  12. 12.56 × 4 =
  13. 13.47 × 4 =
  14. 14.59 × 4 =
  15. 15.7 × 4 =
  16. 16.25 × 4 =
  17. 17.23 × 4 =
  18. 18.57 × 4 =
  19. 19.30 × 4 =
  20. 20.50 × 4 =
  21. 21.26 × 4 =
  22. 22.19 × 4 =
  23. 23.27 × 4 =
  24. 24.13 × 4 =
  25. 25.36 × 4 =
  26. 26.24 × 4 =
  27. 27.16 × 4 =
  28. 28.9 × 4 =
  29. 29.10 × 4 =
  30. 30.43 × 4 =
  31. 31.40 × 4 =
  32. 32.52 × 4 =
  33. 33.22 × 4 =
  34. 34.15 × 4 =
  35. 35.17 × 4 =
  36. 36.6 × 4 =
  37. 37.45 × 4 =
  38. 38.20 × 4 =
  39. 39.60 × 4 =
  40. 40.54 × 4 =

Answer key

  1. 164
  2. 168
  3. 44
  4. 204
  5. 192
  6. 72
  7. 212
  8. 176
  9. 152
  10. 140
  11. 56
  12. 224
  13. 188
  14. 236
  15. 28
  16. 100
  17. 92
  18. 228
  19. 120
  20. 200
  21. 104
  22. 76
  23. 108
  24. 52
  25. 144
  26. 96
  27. 64
  28. 36
  29. 40
  30. 172
  31. 160
  32. 208
  33. 88
  34. 60
  35. 68
  36. 24
  37. 180
  38. 80
  39. 240
  40. 216

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