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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 759 · 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. 1.30 × 8 =
  2. 2.36 × 8 =
  3. 3.46 × 4 =
  4. 4.24 × 4 =
  5. 5.13 × 8 =
  6. 6.22 × 8 =
  7. 7.31 × 8 =
  8. 8.40 × 8 =
  9. 9.15 × 8 =
  10. 10.27 × 8 =
  11. 11.55 × 4 =
  12. 12.12 × 4 =
  13. 13.63 × 4 =
  14. 14.74 × 4 =
  15. 15.26 × 8 =
  16. 16.20 × 8 =
  17. 17.70 × 4 =
  18. 18.23 × 8 =
  19. 19.34 × 8 =
  20. 20.71 × 4 =
  21. 21.30 × 4 =
  22. 22.56 × 4 =
  23. 23.28 × 4 =
  24. 24.29 × 8 =
  25. 25.32 × 8 =
  26. 26.27 × 4 =
  27. 27.57 × 4 =
  28. 28.58 × 4 =
  29. 29.38 × 8 =
  30. 30.29 × 4 =
  31. 31.18 × 8 =
  32. 32.62 × 4 =
  33. 33.44 × 4 =
  34. 34.26 × 4 =
  35. 35.13 × 4 =
  36. 36.16 × 8 =
  37. 37.19 × 8 =
  38. 38.43 × 4 =
  39. 39.21 × 4 =
  40. 40.35 × 4 =

Answer key

  1. 240
  2. 288
  3. 184
  4. 96
  5. 104
  6. 176
  7. 248
  8. 320
  9. 120
  10. 216
  11. 220
  12. 48
  13. 252
  14. 296
  15. 208
  16. 160
  17. 280
  18. 184
  19. 272
  20. 284
  21. 120
  22. 224
  23. 112
  24. 232
  25. 256
  26. 108
  27. 228
  28. 232
  29. 304
  30. 116
  31. 144
  32. 248
  33. 176
  34. 104
  35. 52
  36. 128
  37. 152
  38. 172
  39. 84
  40. 140

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