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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 755 · 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. 1.46 × 4 =
  2. 2.58 × 4 =
  3. 3.35 × 8 =
  4. 4.16 × 4 =
  5. 5.64 × 4 =
  6. 6.12 × 8 =
  7. 7.39 × 8 =
  8. 8.25 × 4 =
  9. 9.57 × 4 =
  10. 10.32 × 8 =
  11. 11.71 × 4 =
  12. 12.23 × 4 =
  13. 13.38 × 4 =
  14. 14.36 × 8 =
  15. 15.21 × 8 =
  16. 16.43 × 4 =
  17. 17.28 × 4 =
  18. 18.18 × 8 =
  19. 19.39 × 4 =
  20. 20.32 × 4 =
  21. 21.17 × 4 =
  22. 22.29 × 8 =
  23. 23.33 × 4 =
  24. 24.56 × 4 =
  25. 25.13 × 4 =
  26. 26.61 × 4 =
  27. 27.15 × 8 =
  28. 28.38 × 8 =
  29. 29.12 × 4 =
  30. 30.14 × 8 =
  31. 31.24 × 8 =
  32. 32.15 × 4 =
  33. 33.40 × 8 =
  34. 34.65 × 4 =
  35. 35.40 × 4 =
  36. 36.24 × 4 =
  37. 37.31 × 4 =
  38. 38.26 × 8 =
  39. 39.31 × 8 =
  40. 40.16 × 8 =

Answer key

  1. 184
  2. 232
  3. 280
  4. 64
  5. 256
  6. 96
  7. 312
  8. 100
  9. 228
  10. 256
  11. 284
  12. 92
  13. 152
  14. 288
  15. 168
  16. 172
  17. 112
  18. 144
  19. 156
  20. 128
  21. 68
  22. 232
  23. 132
  24. 224
  25. 52
  26. 244
  27. 120
  28. 304
  29. 48
  30. 112
  31. 192
  32. 60
  33. 320
  34. 260
  35. 160
  36. 96
  37. 124
  38. 208
  39. 248
  40. 128

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