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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 894 · 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. 1.12 × 4 =
  2. 2.14 × 4 =
  3. 3.17 × 8 =
  4. 4.16 × 8 =
  5. 5.23 × 8 =
  6. 6.26 × 4 =
  7. 7.22 × 8 =
  8. 8.41 × 4 =
  9. 9.32 × 4 =
  10. 10.74 × 4 =
  11. 11.33 × 8 =
  12. 12.27 × 4 =
  13. 13.24 × 8 =
  14. 14.56 × 4 =
  15. 15.12 × 8 =
  16. 16.72 × 4 =
  17. 17.18 × 4 =
  18. 18.22 × 4 =
  19. 19.53 × 4 =
  20. 20.13 × 8 =
  21. 21.39 × 4 =
  22. 22.52 × 4 =
  23. 23.39 × 8 =
  24. 24.15 × 4 =
  25. 25.40 × 8 =
  26. 26.29 × 4 =
  27. 27.38 × 8 =
  28. 28.31 × 8 =
  29. 29.67 × 4 =
  30. 30.44 × 4 =
  31. 31.30 × 8 =
  32. 32.15 × 8 =
  33. 33.36 × 8 =
  34. 34.64 × 4 =
  35. 35.27 × 8 =
  36. 36.20 × 4 =
  37. 37.75 × 4 =
  38. 38.29 × 8 =
  39. 39.43 × 4 =
  40. 40.19 × 8 =

Answer key

  1. 48
  2. 56
  3. 136
  4. 128
  5. 184
  6. 104
  7. 176
  8. 164
  9. 128
  10. 296
  11. 264
  12. 108
  13. 192
  14. 224
  15. 96
  16. 288
  17. 72
  18. 88
  19. 212
  20. 104
  21. 156
  22. 208
  23. 312
  24. 60
  25. 320
  26. 116
  27. 304
  28. 248
  29. 268
  30. 176
  31. 240
  32. 120
  33. 288
  34. 256
  35. 216
  36. 80
  37. 300
  38. 232
  39. 172
  40. 152

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