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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 150 · 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. 1.36 × 8 =
  2. 2.26 × 8 =
  3. 3.31 × 4 =
  4. 4.14 × 8 =
  5. 5.20 × 8 =
  6. 6.31 × 8 =
  7. 7.12 × 8 =
  8. 8.33 × 4 =
  9. 9.22 × 8 =
  10. 10.14 × 4 =
  11. 11.16 × 8 =
  12. 12.27 × 4 =
  13. 13.22 × 4 =
  14. 14.32 × 4 =
  15. 15.18 × 8 =
  16. 16.45 × 4 =
  17. 17.17 × 4 =
  18. 18.32 × 8 =
  19. 19.30 × 4 =
  20. 20.35 × 8 =
  21. 21.24 × 8 =
  22. 22.30 × 8 =
  23. 23.27 × 8 =
  24. 24.57 × 4 =
  25. 25.25 × 8 =
  26. 26.21 × 4 =
  27. 27.43 × 4 =
  28. 28.73 × 4 =
  29. 29.35 × 4 =
  30. 30.21 × 8 =
  31. 31.19 × 8 =
  32. 32.15 × 4 =
  33. 33.12 × 4 =
  34. 34.69 × 4 =
  35. 35.75 × 4 =
  36. 36.28 × 8 =
  37. 37.29 × 8 =
  38. 38.59 × 4 =
  39. 39.13 × 8 =
  40. 40.74 × 4 =

Answer key

  1. 288
  2. 208
  3. 124
  4. 112
  5. 160
  6. 248
  7. 96
  8. 132
  9. 176
  10. 56
  11. 128
  12. 108
  13. 88
  14. 128
  15. 144
  16. 180
  17. 68
  18. 256
  19. 120
  20. 280
  21. 192
  22. 240
  23. 216
  24. 228
  25. 200
  26. 84
  27. 172
  28. 292
  29. 140
  30. 168
  31. 152
  32. 60
  33. 48
  34. 276
  35. 300
  36. 224
  37. 232
  38. 236
  39. 104
  40. 296

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