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Multiply by 4 Worksheet

Maths tricks trick 3: Times 4: double, double · Set 122 · 40 questions
TalentJR

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

NameDateTime takenScore ___ / 40
  1. 1.40 × 4 =
  2. 2.8 × 4 =
  3. 3.56 × 4 =
  4. 4.32 × 4 =
  5. 5.55 × 4 =
  6. 6.7 × 4 =
  7. 7.42 × 4 =
  8. 8.28 × 4 =
  9. 9.24 × 4 =
  10. 10.6 × 4 =
  11. 11.27 × 4 =
  12. 12.11 × 4 =
  13. 13.53 × 4 =
  14. 14.23 × 4 =
  15. 15.12 × 4 =
  16. 16.29 × 4 =
  17. 17.43 × 4 =
  18. 18.50 × 4 =
  19. 19.59 × 4 =
  20. 20.52 × 4 =
  21. 21.38 × 4 =
  22. 22.9 × 4 =
  23. 23.21 × 4 =
  24. 24.44 × 4 =
  25. 25.39 × 4 =
  26. 26.58 × 4 =
  27. 27.48 × 4 =
  28. 28.22 × 4 =
  29. 29.37 × 4 =
  30. 30.57 × 4 =
  31. 31.35 × 4 =
  32. 32.16 × 4 =
  33. 33.45 × 4 =
  34. 34.17 × 4 =
  35. 35.34 × 4 =
  36. 36.36 × 4 =
  37. 37.13 × 4 =
  38. 38.60 × 4 =
  39. 39.31 × 4 =
  40. 40.41 × 4 =

Answer key

  1. 160
  2. 32
  3. 224
  4. 128
  5. 220
  6. 28
  7. 168
  8. 112
  9. 96
  10. 24
  11. 108
  12. 44
  13. 212
  14. 92
  15. 48
  16. 116
  17. 172
  18. 200
  19. 236
  20. 208
  21. 152
  22. 36
  23. 84
  24. 176
  25. 156
  26. 232
  27. 192
  28. 88
  29. 148
  30. 228
  31. 140
  32. 64
  33. 180
  34. 68
  35. 136
  36. 144
  37. 52
  38. 240
  39. 124
  40. 164

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