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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 416 · 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. 1.24 × 4 =
  2. 2.25 × 4 =
  3. 3.20 × 8 =
  4. 4.35 × 8 =
  5. 5.32 × 8 =
  6. 6.50 × 4 =
  7. 7.49 × 4 =
  8. 8.20 × 4 =
  9. 9.68 × 4 =
  10. 10.17 × 4 =
  11. 11.25 × 8 =
  12. 12.28 × 8 =
  13. 13.26 × 8 =
  14. 14.21 × 4 =
  15. 15.60 × 4 =
  16. 16.40 × 8 =
  17. 17.51 × 4 =
  18. 18.12 × 8 =
  19. 19.33 × 8 =
  20. 20.14 × 8 =
  21. 21.19 × 8 =
  22. 22.15 × 8 =
  23. 23.36 × 8 =
  24. 24.38 × 4 =
  25. 25.28 × 4 =
  26. 26.22 × 8 =
  27. 27.67 × 4 =
  28. 28.18 × 8 =
  29. 29.58 × 4 =
  30. 30.23 × 8 =
  31. 31.66 × 4 =
  32. 32.13 × 4 =
  33. 33.71 × 4 =
  34. 34.45 × 4 =
  35. 35.34 × 8 =
  36. 36.16 × 4 =
  37. 37.26 × 4 =
  38. 38.44 × 4 =
  39. 39.55 × 4 =
  40. 40.37 × 8 =

Answer key

  1. 96
  2. 100
  3. 160
  4. 280
  5. 256
  6. 200
  7. 196
  8. 80
  9. 272
  10. 68
  11. 200
  12. 224
  13. 208
  14. 84
  15. 240
  16. 320
  17. 204
  18. 96
  19. 264
  20. 112
  21. 152
  22. 120
  23. 288
  24. 152
  25. 112
  26. 176
  27. 268
  28. 144
  29. 232
  30. 184
  31. 264
  32. 52
  33. 284
  34. 180
  35. 272
  36. 64
  37. 104
  38. 176
  39. 220
  40. 296

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