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Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 222 · 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. 1.23 × 8 =
  2. 2.36 × 8 =
  3. 3.31 × 8 =
  4. 4.24 × 4 =
  5. 5.58 × 4 =
  6. 6.33 × 8 =
  7. 7.16 × 4 =
  8. 8.45 × 4 =
  9. 9.12 × 8 =
  10. 10.19 × 4 =
  11. 11.34 × 8 =
  12. 12.23 × 4 =
  13. 13.32 × 8 =
  14. 14.20 × 8 =
  15. 15.68 × 4 =
  16. 16.42 × 4 =
  17. 17.60 × 4 =
  18. 18.46 × 4 =
  19. 19.15 × 8 =
  20. 20.28 × 8 =
  21. 21.32 × 4 =
  22. 22.17 × 8 =
  23. 23.40 × 4 =
  24. 24.62 × 4 =
  25. 25.38 × 8 =
  26. 26.27 × 4 =
  27. 27.25 × 8 =
  28. 28.37 × 8 =
  29. 29.30 × 4 =
  30. 30.41 × 4 =
  31. 31.64 × 4 =
  32. 32.67 × 4 =
  33. 33.24 × 8 =
  34. 34.33 × 4 =
  35. 35.27 × 8 =
  36. 36.22 × 8 =
  37. 37.14 × 4 =
  38. 38.61 × 4 =
  39. 39.26 × 8 =
  40. 40.63 × 4 =

Answer key

  1. 184
  2. 288
  3. 248
  4. 96
  5. 232
  6. 264
  7. 64
  8. 180
  9. 96
  10. 76
  11. 272
  12. 92
  13. 256
  14. 160
  15. 272
  16. 168
  17. 240
  18. 184
  19. 120
  20. 224
  21. 128
  22. 136
  23. 160
  24. 248
  25. 304
  26. 108
  27. 200
  28. 296
  29. 120
  30. 164
  31. 256
  32. 268
  33. 192
  34. 132
  35. 216
  36. 176
  37. 56
  38. 244
  39. 208
  40. 252

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