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Mathematics 14 Online
OpenStudy (anonymous):

se front end estimation to estimate the difference of 3459 – 718. Answer 2300 2400 2800 2700

OpenStudy (anonymous):

http://www.youtube.com/watch?v=c4GSf5u80S4

OpenStudy (anonymous):

2700!

OpenStudy (anonymous):

3000 - 700 = 2300

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