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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 680 · 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. 1.26 × 8 =
  2. 2.75 × 4 =
  3. 3.32 × 8 =
  4. 4.15 × 4 =
  5. 5.41 × 4 =
  6. 6.24 × 8 =
  7. 7.58 × 4 =
  8. 8.36 × 8 =
  9. 9.38 × 4 =
  10. 10.22 × 8 =
  11. 11.37 × 8 =
  12. 12.29 × 8 =
  13. 13.18 × 4 =
  14. 14.12 × 8 =
  15. 15.35 × 8 =
  16. 16.20 × 4 =
  17. 17.33 × 8 =
  18. 18.17 × 8 =
  19. 19.30 × 8 =
  20. 20.15 × 8 =
  21. 21.19 × 4 =
  22. 22.16 × 8 =
  23. 23.25 × 4 =
  24. 24.23 × 8 =
  25. 25.39 × 8 =
  26. 26.67 × 4 =
  27. 27.59 × 4 =
  28. 28.40 × 8 =
  29. 29.12 × 4 =
  30. 30.72 × 4 =
  31. 31.47 × 4 =
  32. 32.63 × 4 =
  33. 33.53 × 4 =
  34. 34.14 × 8 =
  35. 35.73 × 4 =
  36. 36.20 × 8 =
  37. 37.16 × 4 =
  38. 38.68 × 4 =
  39. 39.52 × 4 =
  40. 40.38 × 8 =

Answer key

  1. 208
  2. 300
  3. 256
  4. 60
  5. 164
  6. 192
  7. 232
  8. 288
  9. 152
  10. 176
  11. 296
  12. 232
  13. 72
  14. 96
  15. 280
  16. 80
  17. 264
  18. 136
  19. 240
  20. 120
  21. 76
  22. 128
  23. 100
  24. 184
  25. 312
  26. 268
  27. 236
  28. 320
  29. 48
  30. 288
  31. 188
  32. 252
  33. 212
  34. 112
  35. 292
  36. 160
  37. 64
  38. 272
  39. 208
  40. 304

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