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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 476 · 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 × 4 =
  2. 2.44 × 4 =
  3. 3.74 × 4 =
  4. 4.17 × 4 =
  5. 5.13 × 4 =
  6. 6.14 × 4 =
  7. 7.15 × 8 =
  8. 8.19 × 8 =
  9. 9.18 × 4 =
  10. 10.70 × 4 =
  11. 11.20 × 8 =
  12. 12.13 × 8 =
  13. 13.16 × 8 =
  14. 14.17 × 8 =
  15. 15.75 × 4 =
  16. 16.19 × 4 =
  17. 17.37 × 8 =
  18. 18.21 × 8 =
  19. 19.42 × 4 =
  20. 20.32 × 8 =
  21. 21.12 × 8 =
  22. 22.24 × 8 =
  23. 23.18 × 8 =
  24. 24.24 × 4 =
  25. 25.32 × 4 =
  26. 26.31 × 8 =
  27. 27.59 × 4 =
  28. 28.40 × 8 =
  29. 29.29 × 8 =
  30. 30.56 × 4 =
  31. 31.23 × 8 =
  32. 32.35 × 8 =
  33. 33.60 × 4 =
  34. 34.27 × 4 =
  35. 35.46 × 4 =
  36. 36.38 × 8 =
  37. 37.33 × 8 =
  38. 38.29 × 4 =
  39. 39.34 × 4 =
  40. 40.28 × 8 =

Answer key

  1. 148
  2. 176
  3. 296
  4. 68
  5. 52
  6. 56
  7. 120
  8. 152
  9. 72
  10. 280
  11. 160
  12. 104
  13. 128
  14. 136
  15. 300
  16. 76
  17. 296
  18. 168
  19. 168
  20. 256
  21. 96
  22. 192
  23. 144
  24. 96
  25. 128
  26. 248
  27. 236
  28. 320
  29. 232
  30. 224
  31. 184
  32. 280
  33. 240
  34. 108
  35. 184
  36. 304
  37. 264
  38. 116
  39. 136
  40. 224

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