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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 606 · 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. 1.13 × 8 =
  2. 2.25 × 4 =
  3. 3.19 × 8 =
  4. 4.70 × 4 =
  5. 5.32 × 8 =
  6. 6.15 × 8 =
  7. 7.17 × 8 =
  8. 8.52 × 4 =
  9. 9.20 × 8 =
  10. 10.16 × 4 =
  11. 11.12 × 8 =
  12. 12.31 × 8 =
  13. 13.48 × 4 =
  14. 14.17 × 4 =
  15. 15.37 × 8 =
  16. 16.18 × 8 =
  17. 17.58 × 4 =
  18. 18.25 × 8 =
  19. 19.65 × 4 =
  20. 20.34 × 8 =
  21. 21.35 × 4 =
  22. 22.73 × 4 =
  23. 23.33 × 4 =
  24. 24.13 × 4 =
  25. 25.36 × 4 =
  26. 26.15 × 4 =
  27. 27.40 × 4 =
  28. 28.22 × 8 =
  29. 29.33 × 8 =
  30. 30.28 × 8 =
  31. 31.29 × 8 =
  32. 32.66 × 4 =
  33. 33.24 × 8 =
  34. 34.50 × 4 =
  35. 35.23 × 4 =
  36. 36.14 × 4 =
  37. 37.14 × 8 =
  38. 38.64 × 4 =
  39. 39.51 × 4 =
  40. 40.23 × 8 =

Answer key

  1. 104
  2. 100
  3. 152
  4. 280
  5. 256
  6. 120
  7. 136
  8. 208
  9. 160
  10. 64
  11. 96
  12. 248
  13. 192
  14. 68
  15. 296
  16. 144
  17. 232
  18. 200
  19. 260
  20. 272
  21. 140
  22. 292
  23. 132
  24. 52
  25. 144
  26. 60
  27. 160
  28. 176
  29. 264
  30. 224
  31. 232
  32. 264
  33. 192
  34. 200
  35. 92
  36. 56
  37. 112
  38. 256
  39. 204
  40. 184

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