← Times 4: double, double lesson New set →

Multiply by 4 Worksheet

Maths tricks trick 3: Times 4: double, double · Set 282 · 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. 2.41 × 4 =
  3. 3.48 × 4 =
  4. 4.8 × 4 =
  5. 5.43 × 4 =
  6. 6.47 × 4 =
  7. 7.21 × 4 =
  8. 8.25 × 4 =
  9. 9.32 × 4 =
  10. 10.58 × 4 =
  11. 11.57 × 4 =
  12. 12.9 × 4 =
  13. 13.39 × 4 =
  14. 14.53 × 4 =
  15. 15.52 × 4 =
  16. 16.17 × 4 =
  17. 17.15 × 4 =
  18. 18.10 × 4 =
  19. 19.12 × 4 =
  20. 20.36 × 4 =
  21. 21.16 × 4 =
  22. 22.44 × 4 =
  23. 23.55 × 4 =
  24. 24.23 × 4 =
  25. 25.18 × 4 =
  26. 26.35 × 4 =
  27. 27.46 × 4 =
  28. 28.20 × 4 =
  29. 29.7 × 4 =
  30. 30.40 × 4 =
  31. 31.54 × 4 =
  32. 32.6 × 4 =
  33. 33.30 × 4 =
  34. 34.24 × 4 =
  35. 35.11 × 4 =
  36. 36.14 × 4 =
  37. 37.45 × 4 =
  38. 38.60 × 4 =
  39. 39.59 × 4 =
  40. 40.19 × 4 =

Answer key

  1. 152
  2. 164
  3. 192
  4. 32
  5. 172
  6. 188
  7. 84
  8. 100
  9. 128
  10. 232
  11. 228
  12. 36
  13. 156
  14. 212
  15. 208
  16. 68
  17. 60
  18. 40
  19. 48
  20. 144
  21. 64
  22. 176
  23. 220
  24. 92
  25. 72
  26. 140
  27. 184
  28. 80
  29. 28
  30. 160
  31. 216
  32. 24
  33. 120
  34. 96
  35. 44
  36. 56
  37. 180
  38. 240
  39. 236
  40. 76

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