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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 864 · 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. 1.15 × 4 =
  2. 2.16 × 8 =
  3. 3.53 × 4 =
  4. 4.61 × 4 =
  5. 5.41 × 4 =
  6. 6.28 × 8 =
  7. 7.32 × 8 =
  8. 8.12 × 8 =
  9. 9.38 × 8 =
  10. 10.25 × 8 =
  11. 11.34 × 4 =
  12. 12.64 × 4 =
  13. 13.20 × 4 =
  14. 14.26 × 8 =
  15. 15.28 × 4 =
  16. 16.13 × 4 =
  17. 17.21 × 8 =
  18. 18.72 × 4 =
  19. 19.52 × 4 =
  20. 20.33 × 4 =
  21. 21.20 × 8 =
  22. 22.14 × 4 =
  23. 23.69 × 4 =
  24. 24.22 × 8 =
  25. 25.44 × 4 =
  26. 26.18 × 8 =
  27. 27.29 × 4 =
  28. 28.73 × 4 =
  29. 29.17 × 8 =
  30. 30.19 × 8 =
  31. 31.46 × 4 =
  32. 32.65 × 4 =
  33. 33.40 × 4 =
  34. 34.23 × 8 =
  35. 35.16 × 4 =
  36. 36.74 × 4 =
  37. 37.68 × 4 =
  38. 38.36 × 8 =
  39. 39.29 × 8 =
  40. 40.30 × 8 =

Answer key

  1. 60
  2. 128
  3. 212
  4. 244
  5. 164
  6. 224
  7. 256
  8. 96
  9. 304
  10. 200
  11. 136
  12. 256
  13. 80
  14. 208
  15. 112
  16. 52
  17. 168
  18. 288
  19. 208
  20. 132
  21. 160
  22. 56
  23. 276
  24. 176
  25. 176
  26. 144
  27. 116
  28. 292
  29. 136
  30. 152
  31. 184
  32. 260
  33. 160
  34. 184
  35. 64
  36. 296
  37. 272
  38. 288
  39. 232
  40. 240

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