← 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 972 · 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. 1.72 × 4 =
  2. 2.25 × 8 =
  3. 3.28 × 8 =
  4. 4.71 × 4 =
  5. 5.69 × 4 =
  6. 6.12 × 8 =
  7. 7.13 × 8 =
  8. 8.37 × 8 =
  9. 9.65 × 4 =
  10. 10.13 × 4 =
  11. 11.48 × 4 =
  12. 12.52 × 4 =
  13. 13.75 × 4 =
  14. 14.29 × 8 =
  15. 15.20 × 8 =
  16. 16.51 × 4 =
  17. 17.17 × 4 =
  18. 18.17 × 8 =
  19. 19.33 × 8 =
  20. 20.38 × 8 =
  21. 21.64 × 4 =
  22. 22.34 × 8 =
  23. 23.39 × 8 =
  24. 24.12 × 4 =
  25. 25.58 × 4 =
  26. 26.74 × 4 =
  27. 27.15 × 8 =
  28. 28.14 × 8 =
  29. 29.41 × 4 =
  30. 30.19 × 8 =
  31. 31.27 × 8 =
  32. 32.31 × 4 =
  33. 33.36 × 8 =
  34. 34.26 × 8 =
  35. 35.21 × 4 =
  36. 36.61 × 4 =
  37. 37.32 × 4 =
  38. 38.14 × 4 =
  39. 39.24 × 4 =
  40. 40.25 × 4 =

Answer key

  1. 288
  2. 200
  3. 224
  4. 284
  5. 276
  6. 96
  7. 104
  8. 296
  9. 260
  10. 52
  11. 192
  12. 208
  13. 300
  14. 232
  15. 160
  16. 204
  17. 68
  18. 136
  19. 264
  20. 304
  21. 256
  22. 272
  23. 312
  24. 48
  25. 232
  26. 296
  27. 120
  28. 112
  29. 164
  30. 152
  31. 216
  32. 124
  33. 288
  34. 208
  35. 84
  36. 244
  37. 128
  38. 56
  39. 96
  40. 100

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