← 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 993 · 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. 1.24 × 8 =
  2. 2.20 × 8 =
  3. 3.29 × 8 =
  4. 4.17 × 4 =
  5. 5.15 × 4 =
  6. 6.27 × 8 =
  7. 7.28 × 8 =
  8. 8.30 × 8 =
  9. 9.51 × 4 =
  10. 10.74 × 4 =
  11. 11.18 × 8 =
  12. 12.33 × 4 =
  13. 13.17 × 8 =
  14. 14.24 × 4 =
  15. 15.52 × 4 =
  16. 16.63 × 4 =
  17. 17.19 × 4 =
  18. 18.42 × 4 =
  19. 19.35 × 8 =
  20. 20.26 × 8 =
  21. 21.25 × 8 =
  22. 22.12 × 8 =
  23. 23.28 × 4 =
  24. 24.38 × 8 =
  25. 25.13 × 4 =
  26. 26.22 × 8 =
  27. 27.20 × 4 =
  28. 28.31 × 8 =
  29. 29.23 × 8 =
  30. 30.75 × 4 =
  31. 31.45 × 4 =
  32. 32.39 × 8 =
  33. 33.43 × 4 =
  34. 34.30 × 4 =
  35. 35.67 × 4 =
  36. 36.15 × 8 =
  37. 37.71 × 4 =
  38. 38.16 × 8 =
  39. 39.33 × 8 =
  40. 40.32 × 8 =

Answer key

  1. 192
  2. 160
  3. 232
  4. 68
  5. 60
  6. 216
  7. 224
  8. 240
  9. 204
  10. 296
  11. 144
  12. 132
  13. 136
  14. 96
  15. 208
  16. 252
  17. 76
  18. 168
  19. 280
  20. 208
  21. 200
  22. 96
  23. 112
  24. 304
  25. 52
  26. 176
  27. 80
  28. 248
  29. 184
  30. 300
  31. 180
  32. 312
  33. 172
  34. 120
  35. 268
  36. 120
  37. 284
  38. 128
  39. 264
  40. 256

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