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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 464 · 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. 1.18 × 8 =
  2. 2.73 × 4 =
  3. 3.17 × 8 =
  4. 4.66 × 4 =
  5. 5.67 × 4 =
  6. 6.48 × 4 =
  7. 7.14 × 8 =
  8. 8.56 × 4 =
  9. 9.22 × 4 =
  10. 10.27 × 8 =
  11. 11.23 × 4 =
  12. 12.26 × 4 =
  13. 13.44 × 4 =
  14. 14.58 × 4 =
  15. 15.71 × 4 =
  16. 16.20 × 8 =
  17. 17.36 × 4 =
  18. 18.21 × 8 =
  19. 19.20 × 4 =
  20. 20.31 × 8 =
  21. 21.30 × 8 =
  22. 22.26 × 8 =
  23. 23.28 × 8 =
  24. 24.13 × 8 =
  25. 25.47 × 4 =
  26. 26.23 × 8 =
  27. 27.14 × 4 =
  28. 28.74 × 4 =
  29. 29.38 × 8 =
  30. 30.17 × 4 =
  31. 31.41 × 4 =
  32. 32.15 × 8 =
  33. 33.24 × 8 =
  34. 34.35 × 4 =
  35. 35.33 × 8 =
  36. 36.65 × 4 =
  37. 37.33 × 4 =
  38. 38.75 × 4 =
  39. 39.19 × 8 =
  40. 40.59 × 4 =

Answer key

  1. 144
  2. 292
  3. 136
  4. 264
  5. 268
  6. 192
  7. 112
  8. 224
  9. 88
  10. 216
  11. 92
  12. 104
  13. 176
  14. 232
  15. 284
  16. 160
  17. 144
  18. 168
  19. 80
  20. 248
  21. 240
  22. 208
  23. 224
  24. 104
  25. 188
  26. 184
  27. 56
  28. 296
  29. 304
  30. 68
  31. 164
  32. 120
  33. 192
  34. 140
  35. 264
  36. 260
  37. 132
  38. 300
  39. 152
  40. 236

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