← 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 422 · 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. 1.73 × 4 =
  2. 2.16 × 8 =
  3. 3.59 × 4 =
  4. 4.54 × 4 =
  5. 5.32 × 8 =
  6. 6.21 × 4 =
  7. 7.37 × 8 =
  8. 8.35 × 8 =
  9. 9.25 × 8 =
  10. 10.64 × 4 =
  11. 11.23 × 8 =
  12. 12.72 × 4 =
  13. 13.37 × 4 =
  14. 14.34 × 8 =
  15. 15.26 × 8 =
  16. 16.67 × 4 =
  17. 17.40 × 8 =
  18. 18.29 × 4 =
  19. 19.12 × 8 =
  20. 20.33 × 4 =
  21. 21.31 × 8 =
  22. 22.13 × 4 =
  23. 23.36 × 4 =
  24. 24.28 × 8 =
  25. 25.29 × 8 =
  26. 26.17 × 4 =
  27. 27.24 × 4 =
  28. 28.21 × 8 =
  29. 29.53 × 4 =
  30. 30.13 × 8 =
  31. 31.33 × 8 =
  32. 32.28 × 4 =
  33. 33.18 × 4 =
  34. 34.41 × 4 =
  35. 35.26 × 4 =
  36. 36.32 × 4 =
  37. 37.36 × 8 =
  38. 38.24 × 8 =
  39. 39.19 × 4 =
  40. 40.22 × 4 =

Answer key

  1. 292
  2. 128
  3. 236
  4. 216
  5. 256
  6. 84
  7. 296
  8. 280
  9. 200
  10. 256
  11. 184
  12. 288
  13. 148
  14. 272
  15. 208
  16. 268
  17. 320
  18. 116
  19. 96
  20. 132
  21. 248
  22. 52
  23. 144
  24. 224
  25. 232
  26. 68
  27. 96
  28. 168
  29. 212
  30. 104
  31. 264
  32. 112
  33. 72
  34. 164
  35. 104
  36. 128
  37. 288
  38. 192
  39. 76
  40. 88

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