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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 631 · 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. 1.27 × 8 =
  2. 2.72 × 4 =
  3. 3.38 × 4 =
  4. 4.25 × 4 =
  5. 5.13 × 8 =
  6. 6.18 × 8 =
  7. 7.14 × 8 =
  8. 8.16 × 8 =
  9. 9.30 × 4 =
  10. 10.41 × 4 =
  11. 11.12 × 4 =
  12. 12.26 × 4 =
  13. 13.44 × 4 =
  14. 14.18 × 4 =
  15. 15.23 × 8 =
  16. 16.33 × 8 =
  17. 17.24 × 4 =
  18. 18.67 × 4 =
  19. 19.58 × 4 =
  20. 20.46 × 4 =
  21. 21.17 × 8 =
  22. 22.30 × 8 =
  23. 23.73 × 4 =
  24. 24.37 × 8 =
  25. 25.48 × 4 =
  26. 26.13 × 4 =
  27. 27.42 × 4 =
  28. 28.53 × 4 =
  29. 29.40 × 8 =
  30. 30.14 × 4 =
  31. 31.35 × 8 =
  32. 32.20 × 4 =
  33. 33.35 × 4 =
  34. 34.45 × 4 =
  35. 35.28 × 8 =
  36. 36.56 × 4 =
  37. 37.16 × 4 =
  38. 38.63 × 4 =
  39. 39.21 × 4 =
  40. 40.54 × 4 =

Answer key

  1. 216
  2. 288
  3. 152
  4. 100
  5. 104
  6. 144
  7. 112
  8. 128
  9. 120
  10. 164
  11. 48
  12. 104
  13. 176
  14. 72
  15. 184
  16. 264
  17. 96
  18. 268
  19. 232
  20. 184
  21. 136
  22. 240
  23. 292
  24. 296
  25. 192
  26. 52
  27. 168
  28. 212
  29. 320
  30. 56
  31. 280
  32. 80
  33. 140
  34. 180
  35. 224
  36. 224
  37. 64
  38. 252
  39. 84
  40. 216

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