Current location - Training Enrollment Network - Mathematics courses - What are the types of decimal vertical rows?
What are the types of decimal vertical rows?
Vertical decimal multiplication: the last digit is aligned and calculated according to the calculation rules of integer multiplication. After calculating the product, see how many decimal places one of the two factors has, and then count the decimal points from the right side of the product. If there is a zero at the end, you can remove it.

Vertical decimal division: mainly depends on divisor. The divisor is a few decimal places. Just expand the divisor by the same multiple at the same time to make it an integer, and calculate it according to the law of integer division.

Arithmetic of decimal multiplication:

1, first quadrature according to the law of integer multiplication.

2. See how many decimal places the multiplicand and multiplier * * * have. Just count the numbers from the right side of the product and point to the decimal point.

3. If there is a 0 after the decimal point, cross out the 0 after the decimal point according to the basic properties of the decimal point.

Vertical calculation

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. The first addend in vertical form is written under the second addend in horizontal form, and the plus sign is aligned with the plus sign in horizontal form. The same numbers of addend, addend and sum must be aligned.

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