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Multiply by 4 Worksheet

Maths tricks trick 3: Times 4: double, double · Set 134 · 40 questions
TalentJR

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

NameDateTime takenScore ___ / 40
  1. 1.21 × 4 =
  2. 2.42 × 4 =
  3. 3.40 × 4 =
  4. 4.15 × 4 =
  5. 5.12 × 4 =
  6. 6.43 × 4 =
  7. 7.10 × 4 =
  8. 8.50 × 4 =
  9. 9.6 × 4 =
  10. 10.22 × 4 =
  11. 11.44 × 4 =
  12. 12.17 × 4 =
  13. 13.37 × 4 =
  14. 14.46 × 4 =
  15. 15.48 × 4 =
  16. 16.24 × 4 =
  17. 17.49 × 4 =
  18. 18.28 × 4 =
  19. 19.23 × 4 =
  20. 20.7 × 4 =
  21. 21.33 × 4 =
  22. 22.19 × 4 =
  23. 23.57 × 4 =
  24. 24.45 × 4 =
  25. 25.54 × 4 =
  26. 26.53 × 4 =
  27. 27.13 × 4 =
  28. 28.25 × 4 =
  29. 29.52 × 4 =
  30. 30.58 × 4 =
  31. 31.14 × 4 =
  32. 32.47 × 4 =
  33. 33.20 × 4 =
  34. 34.55 × 4 =
  35. 35.16 × 4 =
  36. 36.29 × 4 =
  37. 37.36 × 4 =
  38. 38.27 × 4 =
  39. 39.11 × 4 =
  40. 40.8 × 4 =

Answer key

  1. 84
  2. 168
  3. 160
  4. 60
  5. 48
  6. 172
  7. 40
  8. 200
  9. 24
  10. 88
  11. 176
  12. 68
  13. 148
  14. 184
  15. 192
  16. 96
  17. 196
  18. 112
  19. 92
  20. 28
  21. 132
  22. 76
  23. 228
  24. 180
  25. 216
  26. 212
  27. 52
  28. 100
  29. 208
  30. 232
  31. 56
  32. 188
  33. 80
  34. 220
  35. 64
  36. 116
  37. 144
  38. 108
  39. 44
  40. 32

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