Student's were reviewing rounding to estimate sums. Estimate: you can find a number that is close to an exact number.
They reviewed by completing Rounding Rocket Ships. Can you draw each rocket to the correct planet?
http://www.superteacherworksheets.com/rounding/rounding-rockets-10s.pdf
Now, they are rounding to a hundreds.
NCTM 2.3 calculating with numbers rounded to one or two digits.
Watch how to round to tens and hundreds. Enjoy!
Brainpop Rounding Video ~ Estimating Time (Ideas for grown-ups too)
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