The vertical calculation process of 580 times 25 is as follows:

580 times 25= 14500.

Each vertical transition number is changed by the last transition number, and then the single digits of the last transition number are multiplied by 2. If carry is needed, proceed to 1, then increase the unit number by ten digits, and so on, and add a new operand to the unit number.

The vertical calculation of multiplication is 1 bit of one number multiplied by 1 bit of another number, which is added to i+j- 1 bit of the product.

Extended data

Standard format of mathematical vertical form

There are two main points in the calculation of column vertical pen: the same digit alignment, starting from the unit. You can add ten digits first without carrying, but it is not recommended for carrying addition later. The format of exercise books is strictly in accordance with the following requirements:

1, the horizontal formula is written from the left end of the horizontal grid line in the math book;

2. Vertical style: the first addend of horizontal style is written below the second addend, and the plus sign of horizontal style is aligned with the plus sign. The same numbers of addend, addend and sum must be aligned.

3. After calculating the vertical columns, don't miss the horizontal numbers.