Dividing Integers

Suppose you want to find 45 divided by 3.
Start off by writing the problem like this.
To begin, ask how many times 3 goes into 4 — that is, what’s 4 divided by 3?
The answer is 1 , so write 1 directly above the 4.
Now multiply 1 by 3 to get 3, place the answer directly below the 4, and draw a line beneath it.
Subtract 4 – 3 to get 1.
Then bring down the 5 to make the new number 15.
Now ask how many times 3 goes into 15.
The answer is 5.
Write 5 just above the 5 and then multiply 3 by 5 to get 15; write the answer under 15.
Now subtract 15 – 15 = 0.
Because you have no more numbers to bring down, you’re finished.
So 45 divided by 3 equals 15.


Leave a Reply