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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 442 · 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. 1.37 × 8 =
  2. 2.29 × 8 =
  3. 3.16 × 8 =
  4. 4.67 × 4 =
  5. 5.15 × 8 =
  6. 6.30 × 8 =
  7. 7.36 × 8 =
  8. 8.19 × 8 =
  9. 9.55 × 4 =
  10. 10.17 × 4 =
  11. 11.31 × 8 =
  12. 12.34 × 8 =
  13. 13.24 × 8 =
  14. 14.60 × 4 =
  15. 15.12 × 4 =
  16. 16.17 × 8 =
  17. 17.58 × 4 =
  18. 18.28 × 8 =
  19. 19.13 × 8 =
  20. 20.12 × 8 =
  21. 21.14 × 8 =
  22. 22.71 × 4 =
  23. 23.40 × 8 =
  24. 24.25 × 4 =
  25. 25.28 × 4 =
  26. 26.21 × 4 =
  27. 27.37 × 4 =
  28. 28.61 × 4 =
  29. 29.75 × 4 =
  30. 30.45 × 4 =
  31. 31.42 × 4 =
  32. 32.15 × 4 =
  33. 33.70 × 4 =
  34. 34.23 × 8 =
  35. 35.30 × 4 =
  36. 36.68 × 4 =
  37. 37.64 × 4 =
  38. 38.22 × 8 =
  39. 39.39 × 4 =
  40. 40.26 × 4 =

Answer key

  1. 296
  2. 232
  3. 128
  4. 268
  5. 120
  6. 240
  7. 288
  8. 152
  9. 220
  10. 68
  11. 248
  12. 272
  13. 192
  14. 240
  15. 48
  16. 136
  17. 232
  18. 224
  19. 104
  20. 96
  21. 112
  22. 284
  23. 320
  24. 100
  25. 112
  26. 84
  27. 148
  28. 244
  29. 300
  30. 180
  31. 168
  32. 60
  33. 280
  34. 184
  35. 120
  36. 272
  37. 256
  38. 176
  39. 156
  40. 104

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