Читать книгу All the Math You'll Ever Need - Steve Slavin - Страница 20

Find the product of 86 and 12.

Solution:

First multiply 86 by 2.

Multiplying 2 × 6 gives you 12, so put down the 2 and carry 1. Then 2 × 8 is 16 plus 1 you carried is 17.

Place a zero at the end of the second line, or if you prefer, just move one space right, and multiply 1 × 86, which obviously is 86. Add the columns to complete the job.