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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 515 · 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. 1.59 × 4 =
  2. 2.23 × 4 =
  3. 3.66 × 4 =
  4. 4.45 × 4 =
  5. 5.16 × 4 =
  6. 6.24 × 8 =
  7. 7.73 × 4 =
  8. 8.27 × 4 =
  9. 9.31 × 8 =
  10. 10.13 × 4 =
  11. 11.42 × 4 =
  12. 12.17 × 8 =
  13. 13.75 × 4 =
  14. 14.26 × 8 =
  15. 15.31 × 4 =
  16. 16.55 × 4 =
  17. 17.21 × 8 =
  18. 18.18 × 8 =
  19. 19.33 × 4 =
  20. 20.35 × 4 =
  21. 21.74 × 4 =
  22. 22.13 × 8 =
  23. 23.18 × 4 =
  24. 24.35 × 8 =
  25. 25.69 × 4 =
  26. 26.23 × 8 =
  27. 27.14 × 8 =
  28. 28.70 × 4 =
  29. 29.50 × 4 =
  30. 30.33 × 8 =
  31. 31.54 × 4 =
  32. 32.61 × 4 =
  33. 33.62 × 4 =
  34. 34.12 × 8 =
  35. 35.19 × 4 =
  36. 36.58 × 4 =
  37. 37.38 × 8 =
  38. 38.15 × 4 =
  39. 39.22 × 8 =
  40. 40.17 × 4 =

Answer key

  1. 236
  2. 92
  3. 264
  4. 180
  5. 64
  6. 192
  7. 292
  8. 108
  9. 248
  10. 52
  11. 168
  12. 136
  13. 300
  14. 208
  15. 124
  16. 220
  17. 168
  18. 144
  19. 132
  20. 140
  21. 296
  22. 104
  23. 72
  24. 280
  25. 276
  26. 184
  27. 112
  28. 280
  29. 200
  30. 264
  31. 216
  32. 244
  33. 248
  34. 96
  35. 76
  36. 232
  37. 304
  38. 60
  39. 176
  40. 68

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