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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 532 · 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 × 4 =
  2. 2.14 × 8 =
  3. 3.32 × 8 =
  4. 4.26 × 4 =
  5. 5.34 × 4 =
  6. 6.18 × 8 =
  7. 7.15 × 8 =
  8. 8.35 × 8 =
  9. 9.45 × 4 =
  10. 10.27 × 8 =
  11. 11.19 × 4 =
  12. 12.46 × 4 =
  13. 13.52 × 4 =
  14. 14.24 × 4 =
  15. 15.58 × 4 =
  16. 16.64 × 4 =
  17. 17.22 × 8 =
  18. 18.39 × 4 =
  19. 19.28 × 4 =
  20. 20.35 × 4 =
  21. 21.13 × 8 =
  22. 22.26 × 8 =
  23. 23.53 × 4 =
  24. 24.30 × 4 =
  25. 25.33 × 8 =
  26. 26.69 × 4 =
  27. 27.27 × 4 =
  28. 28.25 × 8 =
  29. 29.14 × 4 =
  30. 30.43 × 4 =
  31. 31.12 × 8 =
  32. 32.66 × 4 =
  33. 33.20 × 4 =
  34. 34.61 × 4 =
  35. 35.32 × 4 =
  36. 36.40 × 8 =
  37. 37.74 × 4 =
  38. 38.36 × 8 =
  39. 39.16 × 8 =
  40. 40.25 × 4 =

Answer key

  1. 52
  2. 112
  3. 256
  4. 104
  5. 136
  6. 144
  7. 120
  8. 280
  9. 180
  10. 216
  11. 76
  12. 184
  13. 208
  14. 96
  15. 232
  16. 256
  17. 176
  18. 156
  19. 112
  20. 140
  21. 104
  22. 208
  23. 212
  24. 120
  25. 264
  26. 276
  27. 108
  28. 200
  29. 56
  30. 172
  31. 96
  32. 264
  33. 80
  34. 244
  35. 128
  36. 320
  37. 296
  38. 288
  39. 128
  40. 100

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