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Dividing Decimals

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by

Marlee Reznicsek

on 31 January 2014

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Transcript of Dividing Decimals

Dividing Decimals
"Decimal Squares" Method
Lets look at the problem...
0.8÷0.2=??
Step 1:
Draw Decimal Square
Dividing Decimals
in 4 easy steps
by using decimal squares and the measurement concept of division
Step 3:
Split up the decimal square
Step 4:
count the amount of groups
Decimal squares and manipulatives help students understand concepts by creating mental images of the process and can help them when trying to solve later problems.
Step 2:
Look for amount being divided by
Step 1:
Draw Decimal Square
Step 2:
Look for amount being divided by
Step 3:
Split up the decimal square
Step 4:
count the amount of groups
Step 1:
Draw the first number as a decimal square.
0.8÷0.2=?
Do this by shading in 8 of the 10 bars
on a tenth square.
Step 2:
Before you can divide the decimal square up, you need to know how much is in each group! Look at the second number to see how much is in each division.
0.8÷0.2=?
The second number is 0.2 (two tenths). This is what two tenths looks like on a decimal square:
Step 3:
Split up (divide) 0.8 by making as many groups of 0.2 as you can.
Remember that 0.8 is 8 bars and 0.2 is two bars out of the 10 bars total!
Circle as many groups of two bars as you can within the shaded area.
Step 4:
Count how many groups of 0.2 you made out of 0.8.
The number of groups is the answer to the problem, or in math terms, the quotient!
The first number, 0.8, is called the dividend.
The second number in a division problem is called the divisor.
Good job!! You just solved 0.8÷0.2=4 using decimal squares !
Marlee Reznicsek
The answer (quotient) is four!
Created by Marlee Reznicsek
You can view my blog at: mreznicsek.wordpress.com
Images of decimal squares from McGraw Hill Virtual Manipulative Kit which can be found here:
http://highered.mcgraw-hill.com/sites/007351957x/student_view0/virtual_manipulative_kit.html

Other images from prezi.com
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