← 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 467 · 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. 1.56 × 4 =
  2. 2.34 × 8 =
  3. 3.53 × 4 =
  4. 4.45 × 4 =
  5. 5.28 × 8 =
  6. 6.24 × 4 =
  7. 7.34 × 4 =
  8. 8.48 × 4 =
  9. 9.75 × 4 =
  10. 10.26 × 4 =
  11. 11.37 × 8 =
  12. 12.60 × 4 =
  13. 13.29 × 8 =
  14. 14.41 × 4 =
  15. 15.12 × 4 =
  16. 16.33 × 8 =
  17. 17.13 × 8 =
  18. 18.37 × 4 =
  19. 19.50 × 4 =
  20. 20.39 × 4 =
  21. 21.14 × 8 =
  22. 22.22 × 8 =
  23. 23.69 × 4 =
  24. 24.25 × 8 =
  25. 25.22 × 4 =
  26. 26.49 × 4 =
  27. 27.52 × 4 =
  28. 28.35 × 8 =
  29. 29.20 × 4 =
  30. 30.27 × 8 =
  31. 31.31 × 4 =
  32. 32.20 × 8 =
  33. 33.17 × 8 =
  34. 34.33 × 4 =
  35. 35.16 × 4 =
  36. 36.39 × 8 =
  37. 37.26 × 8 =
  38. 38.19 × 8 =
  39. 39.15 × 8 =
  40. 40.23 × 8 =

Answer key

  1. 224
  2. 272
  3. 212
  4. 180
  5. 224
  6. 96
  7. 136
  8. 192
  9. 300
  10. 104
  11. 296
  12. 240
  13. 232
  14. 164
  15. 48
  16. 264
  17. 104
  18. 148
  19. 200
  20. 156
  21. 112
  22. 176
  23. 276
  24. 200
  25. 88
  26. 196
  27. 208
  28. 280
  29. 80
  30. 216
  31. 124
  32. 160
  33. 136
  34. 132
  35. 64
  36. 312
  37. 208
  38. 152
  39. 120
  40. 184

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