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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 867 · 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. 2.14 × 8 =
  3. 3.22 × 8 =
  4. 4.37 × 8 =
  5. 5.18 × 4 =
  6. 6.38 × 8 =
  7. 7.61 × 4 =
  8. 8.24 × 8 =
  9. 9.67 × 4 =
  10. 10.13 × 8 =
  11. 11.74 × 4 =
  12. 12.36 × 8 =
  13. 13.28 × 8 =
  14. 14.34 × 8 =
  15. 15.32 × 8 =
  16. 16.31 × 8 =
  17. 17.60 × 4 =
  18. 18.43 × 4 =
  19. 19.30 × 4 =
  20. 20.27 × 4 =
  21. 21.25 × 4 =
  22. 22.68 × 4 =
  23. 23.20 × 8 =
  24. 24.62 × 4 =
  25. 25.75 × 4 =
  26. 26.38 × 4 =
  27. 27.35 × 8 =
  28. 28.31 × 4 =
  29. 29.23 × 4 =
  30. 30.21 × 8 =
  31. 31.12 × 8 =
  32. 32.26 × 4 =
  33. 33.44 × 4 =
  34. 34.28 × 4 =
  35. 35.21 × 4 =
  36. 36.15 × 4 =
  37. 37.14 × 4 =
  38. 38.34 × 4 =
  39. 39.12 × 4 =
  40. 40.19 × 4 =

Answer key

  1. 216
  2. 112
  3. 176
  4. 296
  5. 72
  6. 304
  7. 244
  8. 192
  9. 268
  10. 104
  11. 296
  12. 288
  13. 224
  14. 272
  15. 256
  16. 248
  17. 240
  18. 172
  19. 120
  20. 108
  21. 100
  22. 272
  23. 160
  24. 248
  25. 300
  26. 152
  27. 280
  28. 124
  29. 92
  30. 168
  31. 96
  32. 104
  33. 176
  34. 112
  35. 84
  36. 60
  37. 56
  38. 136
  39. 48
  40. 76

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