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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 558 · 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. 1.29 × 8 =
  2. 2.27 × 8 =
  3. 3.47 × 4 =
  4. 4.59 × 4 =
  5. 5.14 × 8 =
  6. 6.15 × 4 =
  7. 7.41 × 4 =
  8. 8.39 × 8 =
  9. 9.63 × 4 =
  10. 10.17 × 4 =
  11. 11.21 × 8 =
  12. 12.55 × 4 =
  13. 13.31 × 4 =
  14. 14.52 × 4 =
  15. 15.20 × 8 =
  16. 16.57 × 4 =
  17. 17.24 × 4 =
  18. 18.74 × 4 =
  19. 19.65 × 4 =
  20. 20.12 × 8 =
  21. 21.38 × 4 =
  22. 22.33 × 4 =
  23. 23.37 × 4 =
  24. 24.35 × 4 =
  25. 25.18 × 4 =
  26. 26.36 × 4 =
  27. 27.39 × 4 =
  28. 28.45 × 4 =
  29. 29.16 × 4 =
  30. 30.42 × 4 =
  31. 31.32 × 4 =
  32. 32.31 × 8 =
  33. 33.72 × 4 =
  34. 34.18 × 8 =
  35. 35.30 × 8 =
  36. 36.36 × 8 =
  37. 37.25 × 8 =
  38. 38.46 × 4 =
  39. 39.26 × 8 =
  40. 40.25 × 4 =

Answer key

  1. 232
  2. 216
  3. 188
  4. 236
  5. 112
  6. 60
  7. 164
  8. 312
  9. 252
  10. 68
  11. 168
  12. 220
  13. 124
  14. 208
  15. 160
  16. 228
  17. 96
  18. 296
  19. 260
  20. 96
  21. 152
  22. 132
  23. 148
  24. 140
  25. 72
  26. 144
  27. 156
  28. 180
  29. 64
  30. 168
  31. 128
  32. 248
  33. 288
  34. 144
  35. 240
  36. 288
  37. 200
  38. 184
  39. 208
  40. 100

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