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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 444 · 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. 2.15 × 4 =
  3. 3.33 × 8 =
  4. 4.26 × 8 =
  5. 5.29 × 8 =
  6. 6.22 × 8 =
  7. 7.37 × 8 =
  8. 8.50 × 4 =
  9. 9.40 × 8 =
  10. 10.13 × 8 =
  11. 11.74 × 4 =
  12. 12.52 × 4 =
  13. 13.12 × 8 =
  14. 14.18 × 4 =
  15. 15.68 × 4 =
  16. 16.75 × 4 =
  17. 17.27 × 8 =
  18. 18.12 × 4 =
  19. 19.20 × 8 =
  20. 20.38 × 8 =
  21. 21.35 × 4 =
  22. 22.56 × 4 =
  23. 23.39 × 8 =
  24. 24.30 × 4 =
  25. 25.69 × 4 =
  26. 26.35 × 8 =
  27. 27.28 × 8 =
  28. 28.54 × 4 =
  29. 29.34 × 8 =
  30. 30.15 × 8 =
  31. 31.63 × 4 =
  32. 32.24 × 8 =
  33. 33.17 × 4 =
  34. 34.33 × 4 =
  35. 35.64 × 4 =
  36. 36.66 × 4 =
  37. 37.60 × 4 =
  38. 38.36 × 4 =
  39. 39.53 × 4 =
  40. 40.49 × 4 =

Answer key

  1. 112
  2. 60
  3. 264
  4. 208
  5. 232
  6. 176
  7. 296
  8. 200
  9. 320
  10. 104
  11. 296
  12. 208
  13. 96
  14. 72
  15. 272
  16. 300
  17. 216
  18. 48
  19. 160
  20. 304
  21. 140
  22. 224
  23. 312
  24. 120
  25. 276
  26. 280
  27. 224
  28. 216
  29. 272
  30. 120
  31. 252
  32. 192
  33. 68
  34. 132
  35. 256
  36. 264
  37. 240
  38. 144
  39. 212
  40. 196

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