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Estimating Products | MathHelp.com
By MathHelp.com
This lesson covers perimeter. Students learn that the perimeter of a figure is the distance around the figure, so the perimeter of a figure can be found by adding the lengths of its sides. Since all four sides of a square are equal in length, the perimeter of a square that has a side with a length of 8 feet is 8 + 8 + 8 + 8, or 32 feet. Since opposite sides of a rectangle are equal in length, the perimeter of a rectangle that is 4.5 meters by 6.2 meters is 4.5 + 4.5 + 6.2 + 6.2, or 21.4 meters.
Add, subtract, multiply, and divide numerical radical terms
By Khan Academy
Sal shows how to group like terms to add and simplify radical terms, by simplifying the expression ������������������(2x^2)+4������������������8+3������������������(2x^2)+������������������8.
Add, subtract, multiply, and divide numerical radical terms
By Khan Academy
Sal shows how to group like terms to subtract and simplify radical terms, by simplifying the expression 4������������������(81x^5)-2������������������(81x^5)-������������������(x^3).
