VARIABLES%20AND%20EXPRESSIONS

1
VARIABLES AND EXPRESSIONS

• NUMERICAL EXPRESSION

• A NAME FOR A NUMBER

• VARIABLE OR ALGEBRAIC EXPRESSION

• AN EXPRESSION THAT CONTAINS AT LEAST ONE VARIABLE
  (LETTER)

2
EVALUATING NUMERIC EXPRESSIONS
(300 50) 100
250 100
350
3
EVALUATING NUMERIC EXPRESSIONS
18 (17 9)
18 8
26
4
EVALUATING NUMERIC EXPRESSIONS
(27 6) - 19
33 - 19
14
5
EVALUATING VARIABLE EXPRESSIONS
N 7 FOR N9
N 7
6
EVALUATING VARIABLE EXPRESSIONS
N 7 FOR N9
7
9
16
7
EVALUATING VARIABLE EXPRESSIONS
A (13 8) FOR A 6
A (13 8)
8
EVALUATING VARIABLE EXPRESSIONS
A (13 8) FOR A 6
(13 8)
6
6 5
11
9
EVALUATING VARIABLE EXPRESSIONS
(A B) 10 FOR A 8 AND B 9
(A B) 10
10
EVALUATING VARIABLE EXPRESSIONS
(A B) 10 FOR A 8 AND B 9
( ) 10
8 9
17 - 10
7
11
EVALUATING VARIABLE EXPRESSIONS
AB FOR A 9 AND B 7
AB
12
EVALUATING VARIABLE EXPRESSIONS
AB FOR A 9 AND B 7
X
9 7
63
13
RECAP

• NUMERICAL EXPRESSION
• A NAME FOR A NUMBER

• VARIABLE OR ALGEBRAIC EXPRESSION
• AN EXPRESSION THAT CONTAINS AT LEAST ONE VARIABLE
  (LETTER)

• TO SOLVE A NUMERIC EXPRESSION
• SIMPLIFY

• TO SOLVE AN ALGEBRAIC EXPRESSION ..
• FIRST SUBSTITUTE THEN SIMPLIFY