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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 756 · 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. 1.26 × 8 =
  2. 2.23 × 8 =
  3. 3.56 × 4 =
  4. 4.24 × 8 =
  5. 5.34 × 8 =
  6. 6.13 × 8 =
  7. 7.30 × 4 =
  8. 8.33 × 8 =
  9. 9.48 × 4 =
  10. 10.25 × 8 =
  11. 11.31 × 4 =
  12. 12.54 × 4 =
  13. 13.26 × 4 =
  14. 14.16 × 4 =
  15. 15.72 × 4 =
  16. 16.15 × 4 =
  17. 17.39 × 8 =
  18. 18.37 × 8 =
  19. 19.12 × 8 =
  20. 20.28 × 4 =
  21. 21.38 × 4 =
  22. 22.20 × 4 =
  23. 23.44 × 4 =
  24. 24.15 × 8 =
  25. 25.52 × 4 =
  26. 26.65 × 4 =
  27. 27.57 × 4 =
  28. 28.39 × 4 =
  29. 29.70 × 4 =
  30. 30.27 × 4 =
  31. 31.41 × 4 =
  32. 32.19 × 8 =
  33. 33.32 × 8 =
  34. 34.33 × 4 =
  35. 35.29 × 4 =
  36. 36.32 × 4 =
  37. 37.18 × 8 =
  38. 38.22 × 4 =
  39. 39.24 × 4 =
  40. 40.68 × 4 =

Answer key

  1. 208
  2. 184
  3. 224
  4. 192
  5. 272
  6. 104
  7. 120
  8. 264
  9. 192
  10. 200
  11. 124
  12. 216
  13. 104
  14. 64
  15. 288
  16. 60
  17. 312
  18. 296
  19. 96
  20. 112
  21. 152
  22. 80
  23. 176
  24. 120
  25. 208
  26. 260
  27. 228
  28. 156
  29. 280
  30. 108
  31. 164
  32. 152
  33. 256
  34. 132
  35. 116
  36. 128
  37. 144
  38. 88
  39. 96
  40. 272

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