← Multiply by 4 and 8 by doubling lesson New set →

Multiply by 4 and 8 Mental Maths Worksheet

Mental maths lesson 10: Multiply by 4 and 8 by doubling · Set 763 · 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. 1.38 × 8 =
  2. 2.33 × 4 =
  3. 3.21 × 4 =
  4. 4.26 × 8 =
  5. 5.24 × 8 =
  6. 6.36 × 8 =
  7. 7.39 × 8 =
  8. 8.28 × 8 =
  9. 9.33 × 8 =
  10. 10.34 × 8 =
  11. 11.56 × 4 =
  12. 12.30 × 4 =
  13. 13.17 × 8 =
  14. 14.74 × 4 =
  15. 15.16 × 8 =
  16. 16.52 × 4 =
  17. 17.24 × 4 =
  18. 18.19 × 4 =
  19. 19.26 × 4 =
  20. 20.19 × 8 =
  21. 21.41 × 4 =
  22. 22.62 × 4 =
  23. 23.30 × 8 =
  24. 24.21 × 8 =
  25. 25.31 × 4 =
  26. 26.68 × 4 =
  27. 27.27 × 8 =
  28. 28.23 × 8 =
  29. 29.49 × 4 =
  30. 30.42 × 4 =
  31. 31.15 × 4 =
  32. 32.13 × 4 =
  33. 33.69 × 4 =
  34. 34.60 × 4 =
  35. 35.40 × 4 =
  36. 36.32 × 8 =
  37. 37.12 × 4 =
  38. 38.13 × 8 =
  39. 39.50 × 4 =
  40. 40.14 × 8 =

Answer key

  1. 304
  2. 132
  3. 84
  4. 208
  5. 192
  6. 288
  7. 312
  8. 224
  9. 264
  10. 272
  11. 224
  12. 120
  13. 136
  14. 296
  15. 128
  16. 208
  17. 96
  18. 76
  19. 104
  20. 152
  21. 164
  22. 248
  23. 240
  24. 168
  25. 124
  26. 272
  27. 216
  28. 184
  29. 196
  30. 168
  31. 60
  32. 52
  33. 276
  34. 240
  35. 160
  36. 256
  37. 48
  38. 104
  39. 200
  40. 112

Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths