← 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 978 · 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 × 4 =
  2. 2.28 × 8 =
  3. 3.63 × 4 =
  4. 4.14 × 8 =
  5. 5.56 × 4 =
  6. 6.13 × 8 =
  7. 7.24 × 8 =
  8. 8.27 × 4 =
  9. 9.23 × 4 =
  10. 10.29 × 8 =
  11. 11.35 × 8 =
  12. 12.26 × 8 =
  13. 13.12 × 8 =
  14. 14.70 × 4 =
  15. 15.52 × 4 =
  16. 16.60 × 4 =
  17. 17.49 × 4 =
  18. 18.61 × 4 =
  19. 19.24 × 4 =
  20. 20.37 × 8 =
  21. 21.33 × 4 =
  22. 22.22 × 4 =
  23. 23.27 × 8 =
  24. 24.14 × 4 =
  25. 25.72 × 4 =
  26. 26.40 × 8 =
  27. 27.67 × 4 =
  28. 28.13 × 4 =
  29. 29.17 × 8 =
  30. 30.15 × 8 =
  31. 31.19 × 8 =
  32. 32.20 × 4 =
  33. 33.18 × 8 =
  34. 34.29 × 4 =
  35. 35.30 × 8 =
  36. 36.21 × 8 =
  37. 37.36 × 8 =
  38. 38.59 × 4 =
  39. 39.40 × 4 =
  40. 40.50 × 4 =

Answer key

  1. 48
  2. 224
  3. 252
  4. 112
  5. 224
  6. 104
  7. 192
  8. 108
  9. 92
  10. 232
  11. 280
  12. 208
  13. 96
  14. 280
  15. 208
  16. 240
  17. 196
  18. 244
  19. 96
  20. 296
  21. 132
  22. 88
  23. 216
  24. 56
  25. 288
  26. 320
  27. 268
  28. 52
  29. 136
  30. 120
  31. 152
  32. 80
  33. 144
  34. 116
  35. 240
  36. 168
  37. 288
  38. 236
  39. 160
  40. 200

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