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Multiply by 4 Worksheet

Maths tricks trick 3: Times 4: double, double · Set 113 · 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. 2.40 × 4 =
  3. 3.30 × 4 =
  4. 4.19 × 4 =
  5. 5.28 × 4 =
  6. 6.42 × 4 =
  7. 7.55 × 4 =
  8. 8.15 × 4 =
  9. 9.52 × 4 =
  10. 10.31 × 4 =
  11. 11.20 × 4 =
  12. 12.59 × 4 =
  13. 13.24 × 4 =
  14. 14.14 × 4 =
  15. 15.33 × 4 =
  16. 16.50 × 4 =
  17. 17.44 × 4 =
  18. 18.39 × 4 =
  19. 19.45 × 4 =
  20. 20.7 × 4 =
  21. 21.23 × 4 =
  22. 22.12 × 4 =
  23. 23.25 × 4 =
  24. 24.17 × 4 =
  25. 25.9 × 4 =
  26. 26.49 × 4 =
  27. 27.54 × 4 =
  28. 28.57 × 4 =
  29. 29.22 × 4 =
  30. 30.58 × 4 =
  31. 31.53 × 4 =
  32. 32.16 × 4 =
  33. 33.32 × 4 =
  34. 34.29 × 4 =
  35. 35.35 × 4 =
  36. 36.56 × 4 =
  37. 37.8 × 4 =
  38. 38.27 × 4 =
  39. 39.34 × 4 =
  40. 40.46 × 4 =

Answer key

  1. 164
  2. 160
  3. 120
  4. 76
  5. 112
  6. 168
  7. 220
  8. 60
  9. 208
  10. 124
  11. 80
  12. 236
  13. 96
  14. 56
  15. 132
  16. 200
  17. 176
  18. 156
  19. 180
  20. 28
  21. 92
  22. 48
  23. 100
  24. 68
  25. 36
  26. 196
  27. 216
  28. 228
  29. 88
  30. 232
  31. 212
  32. 64
  33. 128
  34. 116
  35. 140
  36. 224
  37. 32
  38. 108
  39. 136
  40. 184

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