Wednesday, October 6, 2010

Estimation Lesson Plan

Karlie 3rd grade

How many ways are there to round 2 digit numbers?

two way rounding to the tens.



What are the ways to round and estimate numbers?

round by tens and round by hundreds




Round 556- 225.

600-300 = 300

560-230- 330



Sandy drove to Dalls and it ook her 6hrs and 45 mins. About how long did it take her to drive to Dallas?

about 7 hours


The American Bank Center is selling 875 tickets for the Taylor Swift concert. The box office has sold 226 tickets, about how many tickets are left to purchase?

880- 230 = 650

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