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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 985 · 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. 1.31 × 8 =
  2. 2.34 × 8 =
  3. 3.17 × 8 =
  4. 4.61 × 4 =
  5. 5.28 × 4 =
  6. 6.29 × 8 =
  7. 7.47 × 4 =
  8. 8.30 × 4 =
  9. 9.15 × 4 =
  10. 10.20 × 4 =
  11. 11.37 × 8 =
  12. 12.14 × 4 =
  13. 13.55 × 4 =
  14. 14.36 × 8 =
  15. 15.40 × 8 =
  16. 16.16 × 8 =
  17. 17.16 × 4 =
  18. 18.22 × 8 =
  19. 19.56 × 4 =
  20. 20.68 × 4 =
  21. 21.67 × 4 =
  22. 22.50 × 4 =
  23. 23.59 × 4 =
  24. 24.28 × 8 =
  25. 25.19 × 8 =
  26. 26.15 × 8 =
  27. 27.13 × 4 =
  28. 28.38 × 4 =
  29. 29.37 × 4 =
  30. 30.42 × 4 =
  31. 31.12 × 4 =
  32. 32.12 × 8 =
  33. 33.52 × 4 =
  34. 34.29 × 4 =
  35. 35.23 × 4 =
  36. 36.14 × 8 =
  37. 37.33 × 8 =
  38. 38.38 × 8 =
  39. 39.13 × 8 =
  40. 40.39 × 8 =

Answer key

  1. 248
  2. 272
  3. 136
  4. 244
  5. 112
  6. 232
  7. 188
  8. 120
  9. 60
  10. 80
  11. 296
  12. 56
  13. 220
  14. 288
  15. 320
  16. 128
  17. 64
  18. 176
  19. 224
  20. 272
  21. 268
  22. 200
  23. 236
  24. 224
  25. 152
  26. 120
  27. 52
  28. 152
  29. 148
  30. 168
  31. 48
  32. 96
  33. 208
  34. 116
  35. 92
  36. 112
  37. 264
  38. 304
  39. 104
  40. 312

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