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What should be aligned when calculating addition and subtraction vertically?
When calculating addition and subtraction vertically, the number of phases should be aligned and counted from one unit.

In addition calculation, the same numbers are aligned. If the sum exceeds 10, it will move forward to 1. When subtracting, the same numbers are aligned. If it is not enough, borrow 1 from the last digit as 10. Multiply the 1 bit of one number by the j bit of another number and add it to the i+j- 1 bit of the product. When calculating the division vertically, start the division from the most significant bit.

The main introduction of vertical style:

Vertical type means that each 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. In the vertical calculation of arithmetic square root, because each complement needs to add two digits, when the root number is more than one digit, it is necessary to ensure that the complement can not be sandwiched with decimal points.

For example, three digits must be operated separately from hundreds, and ten digits and one digit are added when complement is added. Longitudinal formula refers to a longitudinal formula in the calculation process, which makes the calculation simple. Each 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, advance 1, then increase the unit number by ten digits, and so on, and add the new operand to the unit number.

Vertical calculation method

add

The same numbers are aligned. If the sum exceeds 10, it will move forward to 1. (The numbers should be aligned. ) such as:

435

+697

———

1 132

subtraction

If the same number is aligned, borrow 1 from the previous number as 10 if it is not reduced enough. For example:

756

-569

————

187

increase

The 1 bit of one number is multiplied by the 1 bit of another number.

It should be added to i+j- 1 bit of the product. As for what you said, "it's already passed 10", that's not important. Just lift it up.

separate

For example, 42 divided by 7.

On a scale of 4 [from high to low]. When calculating the division vertically, start from most significant bit, such as: 42 from most significant bit 4; If it is not divisible, such as: 4 is not divisible by 7, then use the highest bit and the next bit to synthesize a number to be divisible until it can be divisible by the divisor; For example, 4 in 42 is not divisible by 7, and 4 and 2 can be combined into a number. 42 divided by 7, the quotient is 6.

Find the arithmetic square root

1, because each complement needs two digits, so when the number of roots is more than one, make sure that the complement can't clip decimal points. For example, three digits must be operated separately from hundreds, and ten digits and one digit are added when complement is added.