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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 810 · 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. 2.54 × 4 =
  3. 3.64 × 4 =
  4. 4.72 × 4 =
  5. 5.19 × 8 =
  6. 6.59 × 4 =
  7. 7.22 × 4 =
  8. 8.38 × 4 =
  9. 9.53 × 4 =
  10. 10.66 × 4 =
  11. 11.12 × 8 =
  12. 12.74 × 4 =
  13. 13.34 × 4 =
  14. 14.29 × 8 =
  15. 15.34 × 8 =
  16. 16.23 × 8 =
  17. 17.30 × 4 =
  18. 18.27 × 4 =
  19. 19.52 × 4 =
  20. 20.20 × 4 =
  21. 21.29 × 4 =
  22. 22.62 × 4 =
  23. 23.16 × 8 =
  24. 24.22 × 8 =
  25. 25.40 × 8 =
  26. 26.23 × 4 =
  27. 27.13 × 4 =
  28. 28.28 × 4 =
  29. 29.50 × 4 =
  30. 30.18 × 4 =
  31. 31.27 × 8 =
  32. 32.20 × 8 =
  33. 33.21 × 8 =
  34. 34.45 × 4 =
  35. 35.42 × 4 =
  36. 36.38 × 8 =
  37. 37.36 × 4 =
  38. 38.71 × 4 =
  39. 39.32 × 8 =
  40. 40.13 × 8 =

Answer key

  1. 252
  2. 216
  3. 256
  4. 288
  5. 152
  6. 236
  7. 88
  8. 152
  9. 212
  10. 264
  11. 96
  12. 296
  13. 136
  14. 232
  15. 272
  16. 184
  17. 120
  18. 108
  19. 208
  20. 80
  21. 116
  22. 248
  23. 128
  24. 176
  25. 320
  26. 92
  27. 52
  28. 112
  29. 200
  30. 72
  31. 216
  32. 160
  33. 168
  34. 180
  35. 168
  36. 304
  37. 144
  38. 284
  39. 256
  40. 104

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