Transcript Dividing Decimals

Dividing Decimals
“Swingin’ Monkeys”
Swinging Monkeys!
Follow these steps and you will
be great at dividing decimals!
Remember: Whatever the
OUTSIDE monkeys do – the
INSIDE monkeys do also!
Division Vocabulary
.2 12.64
“Outside
”
Divisor “Inside”
Dividend
“Roof”
Quotient
Division Vocabulary
12.64 ÷ .2
12.64 divided by .2
.2 12.64
Steps in Dividing Decimals
1. Make the divisor (outside number) a whole number by
moving (swingin’) the decimal to the right as many places as
it takes to make it a WHOLE NUMBER.
2. In MONKEY TERMS: Whatever the outside monkey does
(how far it swings) the inside monkey does also. Then the
monkey climbs up and sits on the roof!
Swingin’ Monkeys
Divisor
.2 12.64
Moved (swung)
the decimal point
1 place to the
right
Steps in Dividing Decimals
2. Move (swing) the decimal point in the dividend the same
number of places as the divisor.
.2 12.64
Moved (swung)
the decimal point
1 place to the
right
Dividend
Steps in Dividing Decimals –
Swingin’ Monkeys
.2 12.64
Steps in Dividing Decimals –
Swingin’ Monkeys
3. Place (swing) the decimal point in the answer (quotient)
lined up with the decimal point in the dividend (on the roof).
.2 12.64
Steps in Dividing Decimals
4. Now, divide as usual!
2 126.4
Steps in Dividing Decimals
4. Divide the numbers. Make sure the decimal point stays
lined up.
63 2
2 126.4
12
6
6
4
What is actually happening . . .

When you move
the decimal one
place to the right to
create a WHOLE
number – you are
actually multiplying
it by 10!


When you move
the decimal two
places to the right
to create a WHOLE
number – you are
actually multiplying
it by 100!
Three?
Let’s Practice
Remember: The more neatly
you write and keep the numbers
lined up, the BETTER!
Your Turn - Practice
1)
14.2 ÷ 0.2 =
2)
25.5 ÷ 1.5 =