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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 818 · 40 questions
TalentJR

How to do it in your head (Double, double, double): × 2: double once. × 4: double, then double again. × 8: double three times.

NameDateTime takenScore ___ / 40
  1. 1.44 × 4 =
  2. 2.14 × 8 =
  3. 3.19 × 4 =
  4. 4.13 × 8 =
  5. 5.52 × 4 =
  6. 6.21 × 4 =
  7. 7.47 × 4 =
  8. 8.22 × 8 =
  9. 9.38 × 8 =
  10. 10.15 × 8 =
  11. 11.56 × 4 =
  12. 12.24 × 8 =
  13. 13.74 × 4 =
  14. 14.22 × 4 =
  15. 15.20 × 8 =
  16. 16.30 × 8 =
  17. 17.26 × 8 =
  18. 18.37 × 8 =
  19. 19.19 × 8 =
  20. 20.58 × 4 =
  21. 21.17 × 8 =
  22. 22.43 × 4 =
  23. 23.39 × 8 =
  24. 24.28 × 8 =
  25. 25.25 × 4 =
  26. 26.18 × 4 =
  27. 27.55 × 4 =
  28. 28.27 × 4 =
  29. 29.30 × 4 =
  30. 30.39 × 4 =
  31. 31.32 × 8 =
  32. 32.12 × 8 =
  33. 33.15 × 4 =
  34. 34.70 × 4 =
  35. 35.26 × 4 =
  36. 36.40 × 8 =
  37. 37.16 × 8 =
  38. 38.29 × 8 =
  39. 39.34 × 4 =
  40. 40.16 × 4 =

Answer key

  1. 176
  2. 112
  3. 76
  4. 104
  5. 208
  6. 84
  7. 188
  8. 176
  9. 304
  10. 120
  11. 224
  12. 192
  13. 296
  14. 88
  15. 160
  16. 240
  17. 208
  18. 296
  19. 152
  20. 232
  21. 136
  22. 172
  23. 312
  24. 224
  25. 100
  26. 72
  27. 220
  28. 108
  29. 120
  30. 156
  31. 256
  32. 96
  33. 60
  34. 280
  35. 104
  36. 320
  37. 128
  38. 232
  39. 136
  40. 64

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