Notes

September 6, 2011

Goals Write math expression for verbal expressions A+ write verbal expressions for math expressions A- Notes:increased by, the product of, the quanity of, IN9 Examples: Verbal: the sum of 7 and 8 multiplied by three Math: (7+8)*3 _ September 7th, 2011

evaluate expressions using order of operations evaluate algebraic expressions using o.o.o.

examples: algebraic: 2x+3*y regular: 2*9+2

notes:pemdas= order of operations. grouping symbols exponents multiplication/division addition/subtraction

September 8th, 2011 Goals: 1.3 Solving open sentences that are equalities and inequalities Vocab: equality, inequality, solution set, and open sentences Examples: 2/5 (x+1)= Notes: Open sentence = variable inside of problem solution set: answers are given you choose the correct one. Flip sign when multiplying/dividing by negative number September 9th 2011 Goals: recognize the properties of identity and inequality. use properties of identity snd inequality.

Propety words symbols examples Multiplicative identity For any number a, the product of a and 1 is a a(1)=a 12(1)=12 1(a)=a 1(12)=12 Multiplicative property of zero For any number a, the product of a and 0 is 0 a(0)=0 8(0)=0 0(a)=0 0(8)=0 Multiplication inverse For every number a/b where a and b are not equal to 0 a/b(b/a)=1 2/3(3/2)=6/6 There is exactly one number b/a such that the product b/a(a/b)=1 or 1 of a/b and b/a is 1

Distributive Property: When your combining like terms you're simplifying.

Goal Communative Property: an operation is **commutative** if changing the order of the operands does not change the end result. associative property When adding or multiplying you can do it in any order and get the same answer

identity property Multiplicative Any number multiplied by 1 remains the same.

Additive Any number added to 0 stays the same.