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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 594 · 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. 1.14 × 8 =
  2. 2.42 × 4 =
  3. 3.74 × 4 =
  4. 4.38 × 8 =
  5. 5.17 × 8 =
  6. 6.58 × 4 =
  7. 7.40 × 4 =
  8. 8.60 × 4 =
  9. 9.35 × 8 =
  10. 10.53 × 4 =
  11. 11.18 × 4 =
  12. 12.51 × 4 =
  13. 13.66 × 4 =
  14. 14.17 × 4 =
  15. 15.24 × 8 =
  16. 16.48 × 4 =
  17. 17.62 × 4 =
  18. 18.26 × 8 =
  19. 19.13 × 8 =
  20. 20.33 × 4 =
  21. 21.12 × 4 =
  22. 22.27 × 4 =
  23. 23.15 × 8 =
  24. 24.29 × 8 =
  25. 25.36 × 4 =
  26. 26.16 × 8 =
  27. 27.32 × 4 =
  28. 28.34 × 8 =
  29. 29.13 × 4 =
  30. 30.31 × 8 =
  31. 31.30 × 8 =
  32. 32.59 × 4 =
  33. 33.31 × 4 =
  34. 34.70 × 4 =
  35. 35.25 × 8 =
  36. 36.22 × 8 =
  37. 37.75 × 4 =
  38. 38.19 × 8 =
  39. 39.35 × 4 =
  40. 40.41 × 4 =

Answer key

  1. 112
  2. 168
  3. 296
  4. 304
  5. 136
  6. 232
  7. 160
  8. 240
  9. 280
  10. 212
  11. 72
  12. 204
  13. 264
  14. 68
  15. 192
  16. 192
  17. 248
  18. 208
  19. 104
  20. 132
  21. 48
  22. 108
  23. 120
  24. 232
  25. 144
  26. 128
  27. 128
  28. 272
  29. 52
  30. 248
  31. 240
  32. 236
  33. 124
  34. 280
  35. 200
  36. 176
  37. 300
  38. 152
  39. 140
  40. 164

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