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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 954 · 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. 1.13 × 8 =
  2. 2.21 × 8 =
  3. 3.36 × 8 =
  4. 4.14 × 4 =
  5. 5.42 × 4 =
  6. 6.47 × 4 =
  7. 7.69 × 4 =
  8. 8.37 × 4 =
  9. 9.20 × 8 =
  10. 10.60 × 4 =
  11. 11.24 × 8 =
  12. 12.27 × 8 =
  13. 13.53 × 4 =
  14. 14.35 × 4 =
  15. 15.19 × 4 =
  16. 16.19 × 8 =
  17. 17.29 × 4 =
  18. 18.15 × 4 =
  19. 19.18 × 8 =
  20. 20.46 × 4 =
  21. 21.41 × 4 =
  22. 22.25 × 4 =
  23. 23.40 × 8 =
  24. 24.28 × 4 =
  25. 25.24 × 4 =
  26. 26.20 × 4 =
  27. 27.17 × 4 =
  28. 28.28 × 8 =
  29. 29.26 × 4 =
  30. 30.33 × 4 =
  31. 31.44 × 4 =
  32. 32.51 × 4 =
  33. 33.30 × 8 =
  34. 34.34 × 8 =
  35. 35.18 × 4 =
  36. 36.40 × 4 =
  37. 37.13 × 4 =
  38. 38.67 × 4 =
  39. 39.15 × 8 =
  40. 40.29 × 8 =

Answer key

  1. 104
  2. 168
  3. 288
  4. 56
  5. 168
  6. 188
  7. 276
  8. 148
  9. 160
  10. 240
  11. 192
  12. 216
  13. 212
  14. 140
  15. 76
  16. 152
  17. 116
  18. 60
  19. 144
  20. 184
  21. 164
  22. 100
  23. 320
  24. 112
  25. 96
  26. 80
  27. 68
  28. 224
  29. 104
  30. 132
  31. 176
  32. 204
  33. 240
  34. 272
  35. 72
  36. 160
  37. 52
  38. 268
  39. 120
  40. 232

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