← 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 259 · 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. 1.53 × 4 =
  2. 2.16 × 8 =
  3. 3.60 × 4 =
  4. 4.19 × 4 =
  5. 5.38 × 8 =
  6. 6.24 × 4 =
  7. 7.58 × 4 =
  8. 8.23 × 8 =
  9. 9.13 × 8 =
  10. 10.27 × 4 =
  11. 11.21 × 4 =
  12. 12.20 × 8 =
  13. 13.46 × 4 =
  14. 14.15 × 8 =
  15. 15.32 × 8 =
  16. 16.50 × 4 =
  17. 17.63 × 4 =
  18. 18.25 × 8 =
  19. 19.27 × 8 =
  20. 20.62 × 4 =
  21. 21.61 × 4 =
  22. 22.40 × 4 =
  23. 23.44 × 4 =
  24. 24.28 × 8 =
  25. 25.29 × 8 =
  26. 26.19 × 8 =
  27. 27.74 × 4 =
  28. 28.70 × 4 =
  29. 29.17 × 8 =
  30. 30.12 × 8 =
  31. 31.23 × 4 =
  32. 32.18 × 8 =
  33. 33.12 × 4 =
  34. 34.22 × 8 =
  35. 35.33 × 8 =
  36. 36.28 × 4 =
  37. 37.39 × 4 =
  38. 38.67 × 4 =
  39. 39.35 × 8 =
  40. 40.72 × 4 =

Answer key

  1. 212
  2. 128
  3. 240
  4. 76
  5. 304
  6. 96
  7. 232
  8. 184
  9. 104
  10. 108
  11. 84
  12. 160
  13. 184
  14. 120
  15. 256
  16. 200
  17. 252
  18. 200
  19. 216
  20. 248
  21. 244
  22. 160
  23. 176
  24. 224
  25. 232
  26. 152
  27. 296
  28. 280
  29. 136
  30. 96
  31. 92
  32. 144
  33. 48
  34. 176
  35. 264
  36. 112
  37. 156
  38. 268
  39. 280
  40. 288

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