← 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 869 · 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. 1.52 × 4 =
  2. 2.33 × 4 =
  3. 3.63 × 4 =
  4. 4.27 × 8 =
  5. 5.37 × 8 =
  6. 6.26 × 4 =
  7. 7.23 × 4 =
  8. 8.15 × 4 =
  9. 9.21 × 4 =
  10. 10.58 × 4 =
  11. 11.31 × 4 =
  12. 12.15 × 8 =
  13. 13.31 × 8 =
  14. 14.29 × 4 =
  15. 15.13 × 4 =
  16. 16.40 × 4 =
  17. 17.37 × 4 =
  18. 18.27 × 4 =
  19. 19.21 × 8 =
  20. 20.16 × 8 =
  21. 21.34 × 8 =
  22. 22.75 × 4 =
  23. 23.17 × 4 =
  24. 24.35 × 8 =
  25. 25.19 × 4 =
  26. 26.43 × 4 =
  27. 27.69 × 4 =
  28. 28.38 × 8 =
  29. 29.42 × 4 =
  30. 30.25 × 4 =
  31. 31.39 × 4 =
  32. 32.56 × 4 =
  33. 33.72 × 4 =
  34. 34.23 × 8 =
  35. 35.36 × 8 =
  36. 36.28 × 4 =
  37. 37.20 × 8 =
  38. 38.46 × 4 =
  39. 39.18 × 8 =
  40. 40.12 × 8 =

Answer key

  1. 208
  2. 132
  3. 252
  4. 216
  5. 296
  6. 104
  7. 92
  8. 60
  9. 84
  10. 232
  11. 124
  12. 120
  13. 248
  14. 116
  15. 52
  16. 160
  17. 148
  18. 108
  19. 168
  20. 128
  21. 272
  22. 300
  23. 68
  24. 280
  25. 76
  26. 172
  27. 276
  28. 304
  29. 168
  30. 100
  31. 156
  32. 224
  33. 288
  34. 184
  35. 288
  36. 112
  37. 160
  38. 184
  39. 144
  40. 96

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