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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 683 · 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. 1.63 × 4 =
  2. 2.16 × 8 =
  3. 3.60 × 4 =
  4. 4.26 × 8 =
  5. 5.12 × 8 =
  6. 6.29 × 4 =
  7. 7.18 × 4 =
  8. 8.22 × 8 =
  9. 9.37 × 8 =
  10. 10.39 × 8 =
  11. 11.19 × 4 =
  12. 12.18 × 8 =
  13. 13.14 × 8 =
  14. 14.19 × 8 =
  15. 15.24 × 4 =
  16. 16.39 × 4 =
  17. 17.50 × 4 =
  18. 18.45 × 4 =
  19. 19.24 × 8 =
  20. 20.21 × 8 =
  21. 21.29 × 8 =
  22. 22.61 × 4 =
  23. 23.13 × 4 =
  24. 24.16 × 4 =
  25. 25.65 × 4 =
  26. 26.14 × 4 =
  27. 27.31 × 4 =
  28. 28.34 × 4 =
  29. 29.33 × 8 =
  30. 30.38 × 8 =
  31. 31.72 × 4 =
  32. 32.27 × 4 =
  33. 33.43 × 4 =
  34. 34.69 × 4 =
  35. 35.35 × 8 =
  36. 36.40 × 8 =
  37. 37.42 × 4 =
  38. 38.74 × 4 =
  39. 39.47 × 4 =
  40. 40.36 × 4 =

Answer key

  1. 252
  2. 128
  3. 240
  4. 208
  5. 96
  6. 116
  7. 72
  8. 176
  9. 296
  10. 312
  11. 76
  12. 144
  13. 112
  14. 152
  15. 96
  16. 156
  17. 200
  18. 180
  19. 192
  20. 168
  21. 232
  22. 244
  23. 52
  24. 64
  25. 260
  26. 56
  27. 124
  28. 136
  29. 264
  30. 304
  31. 288
  32. 108
  33. 172
  34. 276
  35. 280
  36. 320
  37. 168
  38. 296
  39. 188
  40. 144

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