In Tian Zige, Arabic numerals 1 to 9 are written in the square near the left.
One digit and ten digits of two digits occupy a grid respectively.
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.
Extended data:
I. Use of Tian Zige:
Although there are only four Little Square in Tian Zige, in fact, every square is very famous. Every line, every square and every position in the square has its own name. Memorizing Tian Zige and remembering the names of each part is an important prerequisite for beginners to write.
After knowing "Tian Zige", it is an important link to appreciate Tian Zige's Chinese characters, which makes children feel that every word has its place and can't be placed at will. Left and right structure, up and down structure, semi-closed structure and so on. Only by gradually standardizing Tian Zige's Chinese characters can we lay a solid foundation for future Chinese learning.
Second, the vertical calculation method:
1, addition
The same numbers are aligned. If the sum exceeds 10, it will move forward to 1. For example:
435
+697
———
1 132
Step 2 subtract
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
Step 3 increase
The i-th bit of one number is multiplied by the j-th bit of another number.
It should be added to i+j- 1 bit of the product.
Step 4 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, if 4 is not divisible by 7 in 42, then 4 and 2 are combined into a number. If 42 is divided by 7, the quotient is 6.
Baidu Encyclopedia-Vertical Computing
Baidu Encyclopedia-Vertical