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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 365 · 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. 1.25 × 8 =
  2. 2.18 × 4 =
  3. 3.20 × 4 =
  4. 4.26 × 4 =
  5. 5.17 × 8 =
  6. 6.29 × 8 =
  7. 7.47 × 4 =
  8. 8.31 × 8 =
  9. 9.35 × 8 =
  10. 10.34 × 8 =
  11. 11.60 × 4 =
  12. 12.37 × 8 =
  13. 13.65 × 4 =
  14. 14.13 × 8 =
  15. 15.49 × 4 =
  16. 16.68 × 4 =
  17. 17.59 × 4 =
  18. 18.51 × 4 =
  19. 19.22 × 8 =
  20. 20.26 × 8 =
  21. 21.15 × 8 =
  22. 22.36 × 8 =
  23. 23.74 × 4 =
  24. 24.69 × 4 =
  25. 25.24 × 4 =
  26. 26.34 × 4 =
  27. 27.14 × 8 =
  28. 28.52 × 4 =
  29. 29.33 × 8 =
  30. 30.53 × 4 =
  31. 31.20 × 8 =
  32. 32.75 × 4 =
  33. 33.22 × 4 =
  34. 34.32 × 8 =
  35. 35.61 × 4 =
  36. 36.71 × 4 =
  37. 37.24 × 8 =
  38. 38.30 × 8 =
  39. 39.73 × 4 =
  40. 40.12 × 8 =

Answer key

  1. 200
  2. 72
  3. 80
  4. 104
  5. 136
  6. 232
  7. 188
  8. 248
  9. 280
  10. 272
  11. 240
  12. 296
  13. 260
  14. 104
  15. 196
  16. 272
  17. 236
  18. 204
  19. 176
  20. 208
  21. 120
  22. 288
  23. 296
  24. 276
  25. 96
  26. 136
  27. 112
  28. 208
  29. 264
  30. 212
  31. 160
  32. 300
  33. 88
  34. 256
  35. 244
  36. 284
  37. 192
  38. 240
  39. 292
  40. 96

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