Wednesday, February 27, 2013

How To Use a Number Line to Add Two Digit Numbers

All captions and content by Sophia and Jaila

Step 1: Get a pencil and a piece of  paper and at the top write 49+33= which is the  algorithm. Draw a blank number line.


Step 2: Draw your number line.start at 49 not 33 because it quick,easier and more efficient. Because 49 is bigger then 33 and if you start at 33 it will be harder and less efficient and slower.


Step 3: So you have your  agrethem and your number  line. Now you  put  three tens. then you put three ones. you put  three tens and three ones because the  second  number is 33.


Step 4; You have your tens and ones.Now you need to label the tens and ones by putting the numbers under the tens and ones.

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