Division with Decimals

1
Division with Decimals
2
When dividing decimals by decimals, the divisor
must first be a whole number.This is
accomplished by moving the decimal on the divisor
all the way to the end.When the decimal on the
divisor is moved to the right, that is like
multiplying it by a power of 10, therefore the
decimal on the dividend must also be moved the
same number of times.
3
KiKi, karate monkey, is going to help us move the
decimals in both the divisor and dividend to the
right positions.
(This is where the Decimal will be placed In the
Quotient.)
.
2
43
.
5
.
.
2
.
5
(KiKi kicked the decimal 1 time to the right.)
(Now KiKi must also kick this decimal, 1 time
to the right.)
Dividing the numbers then proceeds as normal.
4
Lets have KiKi help us move the decimals in this
problem too.
How many spaces should he kick these decimals?
.
x
x
6
9
4
124
92
.
.
0
.
18
.
-108
Now lets divide!
16
9
-162
7
2
-72
5
KiKi hopes youve been watching and wants to
allow you a chance to earn your own black belt.
You try this one
.
6
x x xx
0018.6
0.031
0.0186
31.
-186
0
How did you do?
Youve earned your black belt!
6
What happens if you move the decimal more times
than you have numbers?
x
1
6
.
.
25
.
0
0
0
.
4
.
0
0
0
-25
(In order to keep dividing, we add a 0 and
bring it down.)
15
0
-150
0
7
Now you try!
xx870.
14
121
.
.
.
8
.
0
-112
98
-98
00
Sharp moves!
-00
0