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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 988 · 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. 1.33 × 4 =
  2. 2.23 × 8 =
  3. 3.27 × 4 =
  4. 4.36 × 8 =
  5. 5.37 × 8 =
  6. 6.31 × 8 =
  7. 7.27 × 8 =
  8. 8.19 × 8 =
  9. 9.28 × 4 =
  10. 10.57 × 4 =
  11. 11.40 × 4 =
  12. 12.72 × 4 =
  13. 13.14 × 4 =
  14. 14.15 × 8 =
  15. 15.21 × 4 =
  16. 16.62 × 4 =
  17. 17.18 × 8 =
  18. 18.20 × 8 =
  19. 19.38 × 8 =
  20. 20.60 × 4 =
  21. 21.26 × 8 =
  22. 22.40 × 8 =
  23. 23.50 × 4 =
  24. 24.13 × 4 =
  25. 25.66 × 4 =
  26. 26.22 × 8 =
  27. 27.61 × 4 =
  28. 28.12 × 8 =
  29. 29.13 × 8 =
  30. 30.25 × 4 =
  31. 31.20 × 4 =
  32. 32.19 × 4 =
  33. 33.17 × 4 =
  34. 34.56 × 4 =
  35. 35.14 × 8 =
  36. 36.23 × 4 =
  37. 37.70 × 4 =
  38. 38.18 × 4 =
  39. 39.32 × 4 =
  40. 40.32 × 8 =

Answer key

  1. 132
  2. 184
  3. 108
  4. 288
  5. 296
  6. 248
  7. 216
  8. 152
  9. 112
  10. 228
  11. 160
  12. 288
  13. 56
  14. 120
  15. 84
  16. 248
  17. 144
  18. 160
  19. 304
  20. 240
  21. 208
  22. 320
  23. 200
  24. 52
  25. 264
  26. 176
  27. 244
  28. 96
  29. 104
  30. 100
  31. 80
  32. 76
  33. 68
  34. 224
  35. 112
  36. 92
  37. 280
  38. 72
  39. 128
  40. 256

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