Tuesday, August 12, 2014

Rounding Decimals

5th Grade
This week in math, our focus has been on rounding decimals to any place using place value understanding and vertical number lines. We began with renaming decimals using various units to strengthen students understanding of place value. 
For example: 
1.5 = _______ tenths (we know that there are 10 tenths in 1 whole so 1.5 is equal to 15 tenths)
1.5 = 15 tenths

2.5 = 25 tenths

12.5 = 125 tenths

Below is how we are decomposing numbers on the place value chart, and then plotting them on the vertical number line. 

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