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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 116 · 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. 1.17 × 8 =
  2. 2.38 × 8 =
  3. 3.60 × 4 =
  4. 4.58 × 4 =
  5. 5.45 × 4 =
  6. 6.34 × 4 =
  7. 7.47 × 4 =
  8. 8.23 × 4 =
  9. 9.55 × 4 =
  10. 10.13 × 8 =
  11. 11.14 × 8 =
  12. 12.36 × 8 =
  13. 13.66 × 4 =
  14. 14.48 × 4 =
  15. 15.26 × 8 =
  16. 16.43 × 4 =
  17. 17.35 × 4 =
  18. 18.74 × 4 =
  19. 19.15 × 8 =
  20. 20.24 × 8 =
  21. 21.31 × 8 =
  22. 22.19 × 8 =
  23. 23.49 × 4 =
  24. 24.18 × 8 =
  25. 25.20 × 8 =
  26. 26.22 × 8 =
  27. 27.61 × 4 =
  28. 28.40 × 8 =
  29. 29.33 × 8 =
  30. 30.72 × 4 =
  31. 31.30 × 4 =
  32. 32.32 × 8 =
  33. 33.24 × 4 =
  34. 34.28 × 4 =
  35. 35.16 × 8 =
  36. 36.12 × 4 =
  37. 37.50 × 4 =
  38. 38.22 × 4 =
  39. 39.20 × 4 =
  40. 40.21 × 8 =

Answer key

  1. 136
  2. 304
  3. 240
  4. 232
  5. 180
  6. 136
  7. 188
  8. 92
  9. 220
  10. 104
  11. 112
  12. 288
  13. 264
  14. 192
  15. 208
  16. 172
  17. 140
  18. 296
  19. 120
  20. 192
  21. 248
  22. 152
  23. 196
  24. 144
  25. 160
  26. 176
  27. 244
  28. 320
  29. 264
  30. 288
  31. 120
  32. 256
  33. 96
  34. 112
  35. 128
  36. 48
  37. 200
  38. 88
  39. 80
  40. 168

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