← 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 254 · 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. 2.57 × 4 =
  3. 3.61 × 4 =
  4. 4.23 × 8 =
  5. 5.28 × 8 =
  6. 6.18 × 8 =
  7. 7.23 × 4 =
  8. 8.63 × 4 =
  9. 9.54 × 4 =
  10. 10.25 × 8 =
  11. 11.21 × 8 =
  12. 12.42 × 4 =
  13. 13.33 × 4 =
  14. 14.24 × 8 =
  15. 15.16 × 4 =
  16. 16.53 × 4 =
  17. 17.68 × 4 =
  18. 18.64 × 4 =
  19. 19.26 × 8 =
  20. 20.15 × 4 =
  21. 21.22 × 8 =
  22. 22.46 × 4 =
  23. 23.74 × 4 =
  24. 24.15 × 8 =
  25. 25.13 × 8 =
  26. 26.38 × 8 =
  27. 27.31 × 8 =
  28. 28.17 × 8 =
  29. 29.20 × 4 =
  30. 30.55 × 4 =
  31. 31.27 × 4 =
  32. 32.40 × 8 =
  33. 33.67 × 4 =
  34. 34.48 × 4 =
  35. 35.26 × 4 =
  36. 36.34 × 8 =
  37. 37.41 × 4 =
  38. 38.37 × 8 =
  39. 39.35 × 8 =
  40. 40.19 × 4 =

Answer key

  1. 96
  2. 228
  3. 244
  4. 184
  5. 224
  6. 144
  7. 92
  8. 252
  9. 216
  10. 200
  11. 168
  12. 168
  13. 132
  14. 192
  15. 64
  16. 212
  17. 272
  18. 256
  19. 208
  20. 60
  21. 176
  22. 184
  23. 296
  24. 120
  25. 104
  26. 304
  27. 248
  28. 136
  29. 80
  30. 220
  31. 108
  32. 320
  33. 268
  34. 192
  35. 104
  36. 272
  37. 164
  38. 296
  39. 280
  40. 76

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