← 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 114 · 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. 1.12 × 8 =
  2. 2.28 × 8 =
  3. 3.16 × 8 =
  4. 4.17 × 4 =
  5. 5.12 × 4 =
  6. 6.25 × 4 =
  7. 7.27 × 8 =
  8. 8.26 × 8 =
  9. 9.24 × 4 =
  10. 10.31 × 8 =
  11. 11.63 × 4 =
  12. 12.34 × 4 =
  13. 13.37 × 4 =
  14. 14.28 × 4 =
  15. 15.16 × 4 =
  16. 16.32 × 4 =
  17. 17.36 × 4 =
  18. 18.21 × 4 =
  19. 19.45 × 4 =
  20. 20.49 × 4 =
  21. 21.46 × 4 =
  22. 22.67 × 4 =
  23. 23.24 × 8 =
  24. 24.30 × 4 =
  25. 25.29 × 8 =
  26. 26.19 × 4 =
  27. 27.32 × 8 =
  28. 28.55 × 4 =
  29. 29.69 × 4 =
  30. 30.52 × 4 =
  31. 31.13 × 8 =
  32. 32.22 × 8 =
  33. 33.29 × 4 =
  34. 34.60 × 4 =
  35. 35.15 × 4 =
  36. 36.34 × 8 =
  37. 37.72 × 4 =
  38. 38.39 × 4 =
  39. 39.27 × 4 =
  40. 40.59 × 4 =

Answer key

  1. 96
  2. 224
  3. 128
  4. 68
  5. 48
  6. 100
  7. 216
  8. 208
  9. 96
  10. 248
  11. 252
  12. 136
  13. 148
  14. 112
  15. 64
  16. 128
  17. 144
  18. 84
  19. 180
  20. 196
  21. 184
  22. 268
  23. 192
  24. 120
  25. 232
  26. 76
  27. 256
  28. 220
  29. 276
  30. 208
  31. 104
  32. 176
  33. 116
  34. 240
  35. 60
  36. 272
  37. 288
  38. 156
  39. 108
  40. 236

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