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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 706 · 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. 1.18 × 4 =
  2. 2.23 × 4 =
  3. 3.29 × 8 =
  4. 4.37 × 8 =
  5. 5.66 × 4 =
  6. 6.40 × 8 =
  7. 7.12 × 8 =
  8. 8.17 × 8 =
  9. 9.13 × 8 =
  10. 10.32 × 8 =
  11. 11.57 × 4 =
  12. 12.50 × 4 =
  13. 13.43 × 4 =
  14. 14.32 × 4 =
  15. 15.17 × 4 =
  16. 16.69 × 4 =
  17. 17.15 × 8 =
  18. 18.33 × 8 =
  19. 19.28 × 4 =
  20. 20.24 × 4 =
  21. 21.16 × 8 =
  22. 22.19 × 4 =
  23. 23.21 × 4 =
  24. 24.25 × 4 =
  25. 25.13 × 4 =
  26. 26.26 × 8 =
  27. 27.28 × 8 =
  28. 28.31 × 8 =
  29. 29.34 × 8 =
  30. 30.23 × 8 =
  31. 31.30 × 8 =
  32. 32.25 × 8 =
  33. 33.75 × 4 =
  34. 34.19 × 8 =
  35. 35.20 × 4 =
  36. 36.18 × 8 =
  37. 37.36 × 4 =
  38. 38.36 × 8 =
  39. 39.56 × 4 =
  40. 40.55 × 4 =

Answer key

  1. 72
  2. 92
  3. 232
  4. 296
  5. 264
  6. 320
  7. 96
  8. 136
  9. 104
  10. 256
  11. 228
  12. 200
  13. 172
  14. 128
  15. 68
  16. 276
  17. 120
  18. 264
  19. 112
  20. 96
  21. 128
  22. 76
  23. 84
  24. 100
  25. 52
  26. 208
  27. 224
  28. 248
  29. 272
  30. 184
  31. 240
  32. 200
  33. 300
  34. 152
  35. 80
  36. 144
  37. 144
  38. 288
  39. 224
  40. 220

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