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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 276 · 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. 1.36 × 8 =
  2. 2.43 × 4 =
  3. 3.72 × 4 =
  4. 4.54 × 4 =
  5. 5.75 × 4 =
  6. 6.17 × 8 =
  7. 7.74 × 4 =
  8. 8.21 × 4 =
  9. 9.28 × 4 =
  10. 10.70 × 4 =
  11. 11.23 × 8 =
  12. 12.59 × 4 =
  13. 13.34 × 4 =
  14. 14.24 × 8 =
  15. 15.42 × 4 =
  16. 16.52 × 4 =
  17. 17.26 × 4 =
  18. 18.30 × 4 =
  19. 19.36 × 4 =
  20. 20.47 × 4 =
  21. 21.17 × 4 =
  22. 22.15 × 4 =
  23. 23.40 × 4 =
  24. 24.67 × 4 =
  25. 25.22 × 4 =
  26. 26.62 × 4 =
  27. 27.64 × 4 =
  28. 28.28 × 8 =
  29. 29.69 × 4 =
  30. 30.33 × 8 =
  31. 31.50 × 4 =
  32. 32.13 × 8 =
  33. 33.13 × 4 =
  34. 34.38 × 4 =
  35. 35.34 × 8 =
  36. 36.25 × 8 =
  37. 37.31 × 8 =
  38. 38.61 × 4 =
  39. 39.15 × 8 =
  40. 40.24 × 4 =

Answer key

  1. 288
  2. 172
  3. 288
  4. 216
  5. 300
  6. 136
  7. 296
  8. 84
  9. 112
  10. 280
  11. 184
  12. 236
  13. 136
  14. 192
  15. 168
  16. 208
  17. 104
  18. 120
  19. 144
  20. 188
  21. 68
  22. 60
  23. 160
  24. 268
  25. 88
  26. 248
  27. 256
  28. 224
  29. 276
  30. 264
  31. 200
  32. 104
  33. 52
  34. 152
  35. 272
  36. 200
  37. 248
  38. 244
  39. 120
  40. 96

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