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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 330 · 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. 1.48 × 4 =
  2. 2.53 × 4 =
  3. 3.16 × 8 =
  4. 4.22 × 8 =
  5. 5.31 × 4 =
  6. 6.24 × 8 =
  7. 7.14 × 8 =
  8. 8.17 × 4 =
  9. 9.13 × 8 =
  10. 10.32 × 8 =
  11. 11.54 × 4 =
  12. 12.39 × 8 =
  13. 13.15 × 8 =
  14. 14.12 × 8 =
  15. 15.27 × 4 =
  16. 16.27 × 8 =
  17. 17.33 × 4 =
  18. 18.37 × 4 =
  19. 19.18 × 8 =
  20. 20.71 × 4 =
  21. 21.14 × 4 =
  22. 22.33 × 8 =
  23. 23.17 × 8 =
  24. 24.23 × 8 =
  25. 25.62 × 4 =
  26. 26.35 × 4 =
  27. 27.20 × 8 =
  28. 28.74 × 4 =
  29. 29.29 × 8 =
  30. 30.31 × 8 =
  31. 31.49 × 4 =
  32. 32.67 × 4 =
  33. 33.69 × 4 =
  34. 34.37 × 8 =
  35. 35.58 × 4 =
  36. 36.13 × 4 =
  37. 37.63 × 4 =
  38. 38.36 × 8 =
  39. 39.36 × 4 =
  40. 40.55 × 4 =

Answer key

  1. 192
  2. 212
  3. 128
  4. 176
  5. 124
  6. 192
  7. 112
  8. 68
  9. 104
  10. 256
  11. 216
  12. 312
  13. 120
  14. 96
  15. 108
  16. 216
  17. 132
  18. 148
  19. 144
  20. 284
  21. 56
  22. 264
  23. 136
  24. 184
  25. 248
  26. 140
  27. 160
  28. 296
  29. 232
  30. 248
  31. 196
  32. 268
  33. 276
  34. 296
  35. 232
  36. 52
  37. 252
  38. 288
  39. 144
  40. 220

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