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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 938 · 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. 1.14 × 8 =
  2. 2.36 × 8 =
  3. 3.46 × 4 =
  4. 4.24 × 4 =
  5. 5.28 × 4 =
  6. 6.12 × 4 =
  7. 7.13 × 8 =
  8. 8.61 × 4 =
  9. 9.73 × 4 =
  10. 10.15 × 8 =
  11. 11.39 × 4 =
  12. 12.74 × 4 =
  13. 13.54 × 4 =
  14. 14.59 × 4 =
  15. 15.25 × 8 =
  16. 16.29 × 4 =
  17. 17.20 × 4 =
  18. 18.64 × 4 =
  19. 19.22 × 8 =
  20. 20.48 × 4 =
  21. 21.71 × 4 =
  22. 22.17 × 8 =
  23. 23.34 × 8 =
  24. 24.16 × 4 =
  25. 25.37 × 4 =
  26. 26.33 × 8 =
  27. 27.22 × 4 =
  28. 28.15 × 4 =
  29. 29.70 × 4 =
  30. 30.49 × 4 =
  31. 31.23 × 4 =
  32. 32.24 × 8 =
  33. 33.37 × 8 =
  34. 34.27 × 4 =
  35. 35.68 × 4 =
  36. 36.23 × 8 =
  37. 37.41 × 4 =
  38. 38.26 × 4 =
  39. 39.53 × 4 =
  40. 40.12 × 8 =

Answer key

  1. 112
  2. 288
  3. 184
  4. 96
  5. 112
  6. 48
  7. 104
  8. 244
  9. 292
  10. 120
  11. 156
  12. 296
  13. 216
  14. 236
  15. 200
  16. 116
  17. 80
  18. 256
  19. 176
  20. 192
  21. 284
  22. 136
  23. 272
  24. 64
  25. 148
  26. 264
  27. 88
  28. 60
  29. 280
  30. 196
  31. 92
  32. 192
  33. 296
  34. 108
  35. 272
  36. 184
  37. 164
  38. 104
  39. 212
  40. 96

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