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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 5 · 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. 1.47 × 4 =
  2. 2.16 × 8 =
  3. 3.48 × 4 =
  4. 4.33 × 8 =
  5. 5.17 × 8 =
  6. 6.38 × 8 =
  7. 7.63 × 4 =
  8. 8.24 × 4 =
  9. 9.12 × 8 =
  10. 10.26 × 4 =
  11. 11.66 × 4 =
  12. 12.13 × 8 =
  13. 13.30 × 8 =
  14. 14.14 × 8 =
  15. 15.64 × 4 =
  16. 16.35 × 8 =
  17. 17.27 × 4 =
  18. 18.15 × 8 =
  19. 19.59 × 4 =
  20. 20.18 × 8 =
  21. 21.43 × 4 =
  22. 22.28 × 8 =
  23. 23.15 × 4 =
  24. 24.19 × 8 =
  25. 25.55 × 4 =
  26. 26.33 × 4 =
  27. 27.39 × 4 =
  28. 28.36 × 8 =
  29. 29.17 × 4 =
  30. 30.22 × 4 =
  31. 31.32 × 4 =
  32. 32.73 × 4 =
  33. 33.19 × 4 =
  34. 34.26 × 8 =
  35. 35.22 × 8 =
  36. 36.74 × 4 =
  37. 37.30 × 4 =
  38. 38.23 × 4 =
  39. 39.34 × 8 =
  40. 40.20 × 4 =

Answer key

  1. 188
  2. 128
  3. 192
  4. 264
  5. 136
  6. 304
  7. 252
  8. 96
  9. 96
  10. 104
  11. 264
  12. 104
  13. 240
  14. 112
  15. 256
  16. 280
  17. 108
  18. 120
  19. 236
  20. 144
  21. 172
  22. 224
  23. 60
  24. 152
  25. 220
  26. 132
  27. 156
  28. 288
  29. 68
  30. 88
  31. 128
  32. 292
  33. 76
  34. 208
  35. 176
  36. 296
  37. 120
  38. 92
  39. 272
  40. 80

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