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Mathematics 11 Online
OpenStudy (isabella1870):

Estimate the following sum by clustering. 128.2 + 129.11 + 132.5 300 390 420 450

OpenStudy (maddielb):

Thoughts?

OpenStudy (isabella1870):

300?

OpenStudy (maddielb):

I was thinking 390

OpenStudy (jtm-pa):

130+130+130=390

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