← 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 551 · 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. 1.33 × 8 =
  2. 2.53 × 4 =
  3. 3.19 × 8 =
  4. 4.71 × 4 =
  5. 5.72 × 4 =
  6. 6.13 × 8 =
  7. 7.13 × 4 =
  8. 8.23 × 4 =
  9. 9.16 × 8 =
  10. 10.28 × 8 =
  11. 11.65 × 4 =
  12. 12.12 × 8 =
  13. 13.61 × 4 =
  14. 14.30 × 8 =
  15. 15.22 × 8 =
  16. 16.14 × 4 =
  17. 17.40 × 8 =
  18. 18.26 × 4 =
  19. 19.37 × 8 =
  20. 20.14 × 8 =
  21. 21.17 × 8 =
  22. 22.50 × 4 =
  23. 23.34 × 8 =
  24. 24.45 × 4 =
  25. 25.36 × 8 =
  26. 26.58 × 4 =
  27. 27.38 × 8 =
  28. 28.29 × 8 =
  29. 29.15 × 8 =
  30. 30.12 × 4 =
  31. 31.29 × 4 =
  32. 32.25 × 8 =
  33. 33.41 × 4 =
  34. 34.39 × 8 =
  35. 35.73 × 4 =
  36. 36.75 × 4 =
  37. 37.18 × 8 =
  38. 38.20 × 8 =
  39. 39.74 × 4 =
  40. 40.42 × 4 =

Answer key

  1. 264
  2. 212
  3. 152
  4. 284
  5. 288
  6. 104
  7. 52
  8. 92
  9. 128
  10. 224
  11. 260
  12. 96
  13. 244
  14. 240
  15. 176
  16. 56
  17. 320
  18. 104
  19. 296
  20. 112
  21. 136
  22. 200
  23. 272
  24. 180
  25. 288
  26. 232
  27. 304
  28. 232
  29. 120
  30. 48
  31. 116
  32. 200
  33. 164
  34. 312
  35. 292
  36. 300
  37. 144
  38. 160
  39. 296
  40. 168

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