Math
Lesson 1
Numbers up to the Millions
Instruction 1-4
ORDER OF OPERATIONS: THE MANUAL APPROACH
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Student's, Parent's and Teacher's Links
http://amby.com/educate/ord-op/
http://www.funbrain.com/algebra/
http://en.wikipedia.org/wiki/Order_of_operations
http://www.math.com/school/subject2/lessons/S2U1L2GL.html