Читать книгу Basic Math & Pre-Algebra All-in-One For Dummies (+ Chapter Quizzes Online) - Mark Zegarelli - Страница 33

Stacked addition allows you to add large numbers in a systematic way.

For example, to add , stack the numbers up in a column format as follows:

Next, starting in the ones’ column and working from right to left, add the numbers and place each result below the line:

Thus, .

In most cases when you add, the calculation will involve carrying at least one digit from one column to the next.

For example, suppose you want to add . Begin by adding in the ones’ column, then write the 2 below the line and carry the 1 to the next column:

Next, add in the tens’ column, then write the 4 below the line and carry the 2:

To complete the problem, add :

Therefore, .