The longitudinal formula refers to a longitudinal formula in the calculation process, which makes the calculation more convenient. I learned four operations of addition, subtraction, multiplication and division in primary school.

Vertical formula

Write directly if the number of digits is the same, and write large if the number of digits is different.

The plus sign is written in seconds, and the horizontal line is drawn in seconds.

Under the horizontal line of the sum of numbers, the sum should also be added to the horizontal line.

For example:

1 RMB 3.5 +3 yuan 7.6.

Align vertically first.

1 yuan 30.5 cents

+3 yuan 7 jiao 6 fen

5 yuan 1 angle 1 minute.

Pay attention to all decimals 1.