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Multiply by 4 Worksheet

Maths tricks trick 3: Times 4: double, double · Set 271 · 40 questions
TalentJR

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

NameDateTime takenScore ___ / 40
  1. 1.43 × 4 =
  2. 2.35 × 4 =
  3. 3.11 × 4 =
  4. 4.8 × 4 =
  5. 5.16 × 4 =
  6. 6.60 × 4 =
  7. 7.21 × 4 =
  8. 8.19 × 4 =
  9. 9.58 × 4 =
  10. 10.47 × 4 =
  11. 11.14 × 4 =
  12. 12.30 × 4 =
  13. 13.33 × 4 =
  14. 14.50 × 4 =
  15. 15.39 × 4 =
  16. 16.59 × 4 =
  17. 17.25 × 4 =
  18. 18.13 × 4 =
  19. 19.15 × 4 =
  20. 20.51 × 4 =
  21. 21.28 × 4 =
  22. 22.24 × 4 =
  23. 23.12 × 4 =
  24. 24.52 × 4 =
  25. 25.44 × 4 =
  26. 26.46 × 4 =
  27. 27.57 × 4 =
  28. 28.48 × 4 =
  29. 29.41 × 4 =
  30. 30.42 × 4 =
  31. 31.6 × 4 =
  32. 32.37 × 4 =
  33. 33.55 × 4 =
  34. 34.38 × 4 =
  35. 35.20 × 4 =
  36. 36.40 × 4 =
  37. 37.7 × 4 =
  38. 38.18 × 4 =
  39. 39.10 × 4 =
  40. 40.30 × 4 =

Answer key

  1. 172
  2. 140
  3. 44
  4. 32
  5. 64
  6. 240
  7. 84
  8. 76
  9. 232
  10. 188
  11. 56
  12. 120
  13. 132
  14. 200
  15. 156
  16. 236
  17. 100
  18. 52
  19. 60
  20. 204
  21. 112
  22. 96
  23. 48
  24. 208
  25. 176
  26. 184
  27. 228
  28. 192
  29. 164
  30. 168
  31. 24
  32. 148
  33. 220
  34. 152
  35. 80
  36. 160
  37. 28
  38. 72
  39. 40
  40. 120

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