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October 21, 2014

October 21, 2014

Posted by **Gio** on Wednesday, November 14, 2012 at 10:52pm.

Is this right M-$1.45

- Math -
**Ms. Sue**, Wednesday, November 14, 2012 at 10:56pmNo.

Why would you subtract?

If one gallon costs 1.45, what does 2 gallons cost? How do you know?

- math -
**Gio**, Wednesday, November 14, 2012 at 11:27pmTwo gallons cost $2.90. You have to add

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