← 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 483 · 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. 1.43 × 4 =
  2. 2.37 × 8 =
  3. 3.33 × 8 =
  4. 4.33 × 4 =
  5. 5.60 × 4 =
  6. 6.21 × 8 =
  7. 7.17 × 8 =
  8. 8.72 × 4 =
  9. 9.65 × 4 =
  10. 10.28 × 8 =
  11. 11.24 × 8 =
  12. 12.29 × 4 =
  13. 13.25 × 8 =
  14. 14.38 × 4 =
  15. 15.73 × 4 =
  16. 16.22 × 8 =
  17. 17.15 × 4 =
  18. 18.37 × 4 =
  19. 19.18 × 4 =
  20. 20.32 × 8 =
  21. 21.31 × 4 =
  22. 22.19 × 4 =
  23. 23.15 × 8 =
  24. 24.18 × 8 =
  25. 25.41 × 4 =
  26. 26.48 × 4 =
  27. 27.46 × 4 =
  28. 28.36 × 4 =
  29. 29.26 × 8 =
  30. 30.70 × 4 =
  31. 31.17 × 4 =
  32. 32.44 × 4 =
  33. 33.20 × 8 =
  34. 34.51 × 4 =
  35. 35.16 × 4 =
  36. 36.23 × 4 =
  37. 37.52 × 4 =
  38. 38.12 × 4 =
  39. 39.74 × 4 =
  40. 40.14 × 8 =

Answer key

  1. 172
  2. 296
  3. 264
  4. 132
  5. 240
  6. 168
  7. 136
  8. 288
  9. 260
  10. 224
  11. 192
  12. 116
  13. 200
  14. 152
  15. 292
  16. 176
  17. 60
  18. 148
  19. 72
  20. 256
  21. 124
  22. 76
  23. 120
  24. 144
  25. 164
  26. 192
  27. 184
  28. 144
  29. 208
  30. 280
  31. 68
  32. 176
  33. 160
  34. 204
  35. 64
  36. 92
  37. 208
  38. 48
  39. 296
  40. 112

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