← Times 4: double, double lesson New set →

Multiply by 4 Worksheet

Maths tricks trick 3: Times 4: double, double · Set 114 · 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. 2.39 × 4 =
  3. 3.57 × 4 =
  4. 4.56 × 4 =
  5. 5.54 × 4 =
  6. 6.35 × 4 =
  7. 7.9 × 4 =
  8. 8.15 × 4 =
  9. 9.29 × 4 =
  10. 10.21 × 4 =
  11. 11.38 × 4 =
  12. 12.53 × 4 =
  13. 13.47 × 4 =
  14. 14.28 × 4 =
  15. 15.23 × 4 =
  16. 16.51 × 4 =
  17. 17.6 × 4 =
  18. 18.52 × 4 =
  19. 19.8 × 4 =
  20. 20.11 × 4 =
  21. 21.24 × 4 =
  22. 22.26 × 4 =
  23. 23.30 × 4 =
  24. 24.25 × 4 =
  25. 25.20 × 4 =
  26. 26.12 × 4 =
  27. 27.55 × 4 =
  28. 28.60 × 4 =
  29. 29.14 × 4 =
  30. 30.32 × 4 =
  31. 31.13 × 4 =
  32. 32.34 × 4 =
  33. 33.37 × 4 =
  34. 34.59 × 4 =
  35. 35.49 × 4 =
  36. 36.7 × 4 =
  37. 37.17 × 4 =
  38. 38.16 × 4 =
  39. 39.42 × 4 =
  40. 40.19 × 4 =

Answer key

  1. 164
  2. 156
  3. 228
  4. 224
  5. 216
  6. 140
  7. 36
  8. 60
  9. 116
  10. 84
  11. 152
  12. 212
  13. 188
  14. 112
  15. 92
  16. 204
  17. 24
  18. 208
  19. 32
  20. 44
  21. 96
  22. 104
  23. 120
  24. 100
  25. 80
  26. 48
  27. 220
  28. 240
  29. 56
  30. 128
  31. 52
  32. 136
  33. 148
  34. 236
  35. 196
  36. 28
  37. 68
  38. 64
  39. 168
  40. 76

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