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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 44 · 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. 1.48 × 4 =
  2. 2.42 × 4 =
  3. 3.22 × 4 =
  4. 4.31 × 4 =
  5. 5.39 × 8 =
  6. 6.53 × 4 =
  7. 7.55 × 4 =
  8. 8.38 × 8 =
  9. 9.26 × 4 =
  10. 10.38 × 4 =
  11. 11.60 × 4 =
  12. 12.20 × 8 =
  13. 13.15 × 8 =
  14. 14.32 × 8 =
  15. 15.30 × 8 =
  16. 16.22 × 8 =
  17. 17.18 × 8 =
  18. 18.17 × 8 =
  19. 19.36 × 8 =
  20. 20.49 × 4 =
  21. 21.27 × 8 =
  22. 22.26 × 8 =
  23. 23.16 × 8 =
  24. 24.12 × 8 =
  25. 25.35 × 4 =
  26. 26.54 × 4 =
  27. 27.34 × 8 =
  28. 28.45 × 4 =
  29. 29.17 × 4 =
  30. 30.24 × 8 =
  31. 31.31 × 8 =
  32. 32.37 × 4 =
  33. 33.28 × 4 =
  34. 34.63 × 4 =
  35. 35.21 × 4 =
  36. 36.71 × 4 =
  37. 37.34 × 4 =
  38. 38.41 × 4 =
  39. 39.20 × 4 =
  40. 40.14 × 8 =

Answer key

  1. 192
  2. 168
  3. 88
  4. 124
  5. 312
  6. 212
  7. 220
  8. 304
  9. 104
  10. 152
  11. 240
  12. 160
  13. 120
  14. 256
  15. 240
  16. 176
  17. 144
  18. 136
  19. 288
  20. 196
  21. 216
  22. 208
  23. 128
  24. 96
  25. 140
  26. 216
  27. 272
  28. 180
  29. 68
  30. 192
  31. 248
  32. 148
  33. 112
  34. 252
  35. 84
  36. 284
  37. 136
  38. 164
  39. 80
  40. 112

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