The second-year math teacher gave the children an o-calypso magma, and the children lost their minds. As a result, teachers taught primary school students a few words that could be accurately filled in without counting。
Let's start with the question:
Let's see what the teacher has to remember
Five central
Two or four shoulders, six or eight feet
Top nine, left seven, right three
There's a problem with carefully attended pupils:
How do i use the phone?
First, the nine numbers of 12 to 20 must be numbered and it must be clear:
“the number in the mouth” means:
The serial number corresponding to the number to be filled in。
As shown in the figure:
I understand the explanation, and i started filling it out on the basis of the mouth:
According to the "centre of five," we know that the number corresponding to serial number 5 is "16," so the number "16" enters the center of the nine palace。
Based on the “two-four-shoulder”, the corresponding numbers for serial numbers 2 and 4, respectively, are “13” and “15”, so the upper left and upper right brackets have been filled in numbers “13” and “15”, respectively。
Based on the “six eight foot”, the corresponding numbers for serial numbers 6 and 8 are known to be “17” and “19”, respectively, so that the numbers “17” and “19” are entered in the lower left and lower right, respectively。
As shown in the figure:
Similarly, the numbers “20” and “12”, corresponding to serial numbers 9 and 1, are entered in the first and the next cells, respectively, of the median number 16 in the nine palace。
Finally, the numbers “18” and “14”, corresponding to serial numbers 7 and 3, are entered in the left and right brackets of the number 16 in the nine palaces, respectively, according to the mouth。
As shown:
It is clear from the tests that the numbers entered by the machine are perfectly correct and that the sum of the three numbers is the same for each cross, vertical and tilt line。
Remember:
This nine-gauge is for all grades of primary school!
Friends of primary school students can write nine consecutive numbers at their discretion, let the children try and see what can be concluded at the end. Welcome to the message!
