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# Long Division

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by

## Victoria Erdman

on 1 October 2013

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#### Transcript of Long Division

Long Division
By Victoria Erdman

Some Definitions
Now We Know the Steps of Division!!! Here's a video to review what we've just learned:
So how is this different from the division we learned last week?
What we're used to: What we'll use now:

16÷4=4

16
4
4
17
5
3
-15
2
Dividend (number to be divided by another number)
Divisor
(the number
we divide by)
Remainder (what's left over)
Remember...
Step #1: Divide: Look at the First Number of the Dividend
How many times does 3 go into 7?
3 x 2 = 6 and 3 x 3 = 9. 9 is too big, so 3 goes into 7 two times.
78
3
2
Step #2: Multiplication
Multiply 2 x 3, and then put the answer underneath the 7.
78
3
2
6
Steps 3 & 4: Subtraction, Bring Down
Subtract the 6 from the 7 to get 1
Bring down the 8
78
3
2
-6
1
8
Step #5: Repeat "DMSB"!
Divide: 18÷3=6
Multiply: 6 x 3 = 18
Subtract: 18-18=0
Bring Down: There’s no other number after the 8 and there’s no remainder, so we’re done!

78
3
2
-6
18
6
-18
0
Review of Multiplication Facts
Division is the opposite of multiplication, so we need to know our multiplication facts really well!

http://www.multiplication.com/games/play/quick-flash-ii

http://www.coolmath4kids.com/long-division/long-division-lesson-1.html.
Mathandreadinghelp.org (2013). How to teach long division to fourth grade students. Retrieved
The Animated Classroom (2011, Mar 1). The Steps to Long Division. Retrieved from

Walker, A. (2013). Quick Flash II: A fun way to practice the times tables. Retrieved from
http://www.multiplication.com/games/play/quick-flash-ii.
Practice Makes Perfect!
Doing Math Seems Brilliant!
References
17
3
5
Divide
Multiply
Subtract
Bring Down
Doing Math Seems Brilliant!
Divide, Multiply, Subtract, Bring down
-15
2