← 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 797 · 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. 1.13 × 8 =
  2. 2.56 × 4 =
  3. 3.47 × 4 =
  4. 4.72 × 4 =
  5. 5.30 × 8 =
  6. 6.12 × 8 =
  7. 7.67 × 4 =
  8. 8.74 × 4 =
  9. 9.25 × 8 =
  10. 10.24 × 4 =
  11. 11.32 × 4 =
  12. 12.21 × 8 =
  13. 13.33 × 4 =
  14. 14.61 × 4 =
  15. 15.49 × 4 =
  16. 16.19 × 8 =
  17. 17.53 × 4 =
  18. 18.37 × 4 =
  19. 19.26 × 4 =
  20. 20.66 × 4 =
  21. 21.29 × 8 =
  22. 22.36 × 8 =
  23. 23.30 × 4 =
  24. 24.46 × 4 =
  25. 25.18 × 4 =
  26. 26.48 × 4 =
  27. 27.54 × 4 =
  28. 28.38 × 8 =
  29. 29.16 × 4 =
  30. 30.44 × 4 =
  31. 31.43 × 4 =
  32. 32.59 × 4 =
  33. 33.26 × 8 =
  34. 34.39 × 8 =
  35. 35.17 × 8 =
  36. 36.34 × 8 =
  37. 37.13 × 4 =
  38. 38.14 × 4 =
  39. 39.28 × 4 =
  40. 40.25 × 4 =

Answer key

  1. 104
  2. 224
  3. 188
  4. 288
  5. 240
  6. 96
  7. 268
  8. 296
  9. 200
  10. 96
  11. 128
  12. 168
  13. 132
  14. 244
  15. 196
  16. 152
  17. 212
  18. 148
  19. 104
  20. 264
  21. 232
  22. 288
  23. 120
  24. 184
  25. 72
  26. 192
  27. 216
  28. 304
  29. 64
  30. 176
  31. 172
  32. 236
  33. 208
  34. 312
  35. 136
  36. 272
  37. 52
  38. 56
  39. 112
  40. 100

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