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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 561 · 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. 1.53 × 4 =
  2. 2.15 × 4 =
  3. 3.69 × 4 =
  4. 4.46 × 4 =
  5. 5.72 × 4 =
  6. 6.35 × 8 =
  7. 7.56 × 4 =
  8. 8.32 × 8 =
  9. 9.12 × 8 =
  10. 10.27 × 4 =
  11. 11.20 × 4 =
  12. 12.68 × 4 =
  13. 13.43 × 4 =
  14. 14.18 × 8 =
  15. 15.39 × 4 =
  16. 16.24 × 8 =
  17. 17.74 × 4 =
  18. 18.19 × 4 =
  19. 19.27 × 8 =
  20. 20.15 × 8 =
  21. 21.25 × 8 =
  22. 22.34 × 8 =
  23. 23.29 × 8 =
  24. 24.44 × 4 =
  25. 25.32 × 4 =
  26. 26.31 × 8 =
  27. 27.22 × 8 =
  28. 28.19 × 8 =
  29. 29.54 × 4 =
  30. 30.39 × 8 =
  31. 31.41 × 4 =
  32. 32.24 × 4 =
  33. 33.33 × 8 =
  34. 34.28 × 4 =
  35. 35.55 × 4 =
  36. 36.25 × 4 =
  37. 37.26 × 8 =
  38. 38.17 × 8 =
  39. 39.36 × 8 =
  40. 40.51 × 4 =

Answer key

  1. 212
  2. 60
  3. 276
  4. 184
  5. 288
  6. 280
  7. 224
  8. 256
  9. 96
  10. 108
  11. 80
  12. 272
  13. 172
  14. 144
  15. 156
  16. 192
  17. 296
  18. 76
  19. 216
  20. 120
  21. 200
  22. 272
  23. 232
  24. 176
  25. 128
  26. 248
  27. 176
  28. 152
  29. 216
  30. 312
  31. 164
  32. 96
  33. 264
  34. 112
  35. 220
  36. 100
  37. 208
  38. 136
  39. 288
  40. 204

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