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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 479 · 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. 1.61 × 4 =
  2. 2.30 × 4 =
  3. 3.22 × 4 =
  4. 4.73 × 4 =
  5. 5.17 × 8 =
  6. 6.37 × 8 =
  7. 7.34 × 4 =
  8. 8.25 × 8 =
  9. 9.22 × 8 =
  10. 10.23 × 8 =
  11. 11.67 × 4 =
  12. 12.18 × 8 =
  13. 13.29 × 8 =
  14. 14.21 × 8 =
  15. 15.12 × 8 =
  16. 16.74 × 4 =
  17. 17.21 × 4 =
  18. 18.24 × 8 =
  19. 19.23 × 4 =
  20. 20.60 × 4 =
  21. 21.19 × 4 =
  22. 22.28 × 4 =
  23. 23.33 × 4 =
  24. 24.75 × 4 =
  25. 25.68 × 4 =
  26. 26.66 × 4 =
  27. 27.24 × 4 =
  28. 28.36 × 8 =
  29. 29.30 × 8 =
  30. 30.42 × 4 =
  31. 31.33 × 8 =
  32. 32.64 × 4 =
  33. 33.32 × 8 =
  34. 34.31 × 8 =
  35. 35.44 × 4 =
  36. 36.43 × 4 =
  37. 37.50 × 4 =
  38. 38.15 × 8 =
  39. 39.16 × 4 =
  40. 40.59 × 4 =

Answer key

  1. 244
  2. 120
  3. 88
  4. 292
  5. 136
  6. 296
  7. 136
  8. 200
  9. 176
  10. 184
  11. 268
  12. 144
  13. 232
  14. 168
  15. 96
  16. 296
  17. 84
  18. 192
  19. 92
  20. 240
  21. 76
  22. 112
  23. 132
  24. 300
  25. 272
  26. 264
  27. 96
  28. 288
  29. 240
  30. 168
  31. 264
  32. 256
  33. 256
  34. 248
  35. 176
  36. 172
  37. 200
  38. 120
  39. 64
  40. 236

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