Long division, who knows?

Long division, who knows?

No problem
It's used for square root. Today's teachers may not
Let's straighten out our thinking first
Let's start by grading the numbers into two digits
Then for the remaining number, it may be one or two digits
Test the quotient with the square of the largest number
67899 is divided into 6, 78 and 99
The greatest quotient of six is two
6-2*2=2
Step 2: 278
The first place of quotient is 2 * 2 = 4, and the test quotient of individual is 41 * 1 = 41, which is too small
42 * 2 = 84 too small
43 * 3 = 129 too small
44 * 4 = 176 too small
45 * 5 = 225 too small
46 * 6 = 276, the rest 2
The quotient is now 26
Step 3: 299
Short division position: 26 * 2 = 52
Only trial 0
The quotient is 260
Step 4: 29900
Quotient short division position: 520
The maximum quotient is 5
29900-5*5205=3875
The quotient is 260.5
. and so on
See you are a teacher, I am not afraid of trouble, please give students more, ha ha