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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 87 · 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. 1.12 × 8 =
  2. 2.14 × 8 =
  3. 3.26 × 4 =
  4. 4.17 × 8 =
  5. 5.17 × 4 =
  6. 6.69 × 4 =
  7. 7.38 × 8 =
  8. 8.64 × 4 =
  9. 9.24 × 4 =
  10. 10.35 × 8 =
  11. 11.41 × 4 =
  12. 12.25 × 8 =
  13. 13.27 × 4 =
  14. 14.15 × 4 =
  15. 15.27 × 8 =
  16. 16.36 × 8 =
  17. 17.62 × 4 =
  18. 18.15 × 8 =
  19. 19.23 × 4 =
  20. 20.26 × 8 =
  21. 21.65 × 4 =
  22. 22.29 × 4 =
  23. 23.16 × 8 =
  24. 24.18 × 8 =
  25. 25.56 × 4 =
  26. 26.33 × 4 =
  27. 27.13 × 8 =
  28. 28.20 × 8 =
  29. 29.74 × 4 =
  30. 30.60 × 4 =
  31. 31.71 × 4 =
  32. 32.44 × 4 =
  33. 33.21 × 8 =
  34. 34.52 × 4 =
  35. 35.34 × 8 =
  36. 36.16 × 4 =
  37. 37.28 × 8 =
  38. 38.75 × 4 =
  39. 39.31 × 4 =
  40. 40.39 × 8 =

Answer key

  1. 96
  2. 112
  3. 104
  4. 136
  5. 68
  6. 276
  7. 304
  8. 256
  9. 96
  10. 280
  11. 164
  12. 200
  13. 108
  14. 60
  15. 216
  16. 288
  17. 248
  18. 120
  19. 92
  20. 208
  21. 260
  22. 116
  23. 128
  24. 144
  25. 224
  26. 132
  27. 104
  28. 160
  29. 296
  30. 240
  31. 284
  32. 176
  33. 168
  34. 208
  35. 272
  36. 64
  37. 224
  38. 300
  39. 124
  40. 312

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