A1.1.1 Math

2. Algebraic expression from verbal description

4. Verbal Expression – sentence from algebraic expression.http://www.tutorvista.com/math/verbal-expressions-in-math

6. Addition

7. Subtraction

8. Multiplication

10. subtraction http://www.purplemath.com/modules/translat.htm KEY WORDS FOR SUBTRACTION Less than, Fewer than Minus, Less Decreased by Difference between/of

11. Multiplication http://www.purplemath.com/modules/translat.htm KEY WORDS FOR MULTIPLICATION Increased/Decreased by a factor Product of Times/Multiplied by

12. division http://www.purplemath.com/modules/translat.htm KEY WORDS FOR DIVISION Quotient of Out of Percent (% by 100) Per Ratio of

13. Symbolic A÷B a/b A+B A-B A×B ab A∙B Verbal “A divided by B” “A plus B” “A minus B” “A times B”

15. Translate:“Three plus b” “Ten times a times b” “Three times x divided by b” 3 + b 10ab 3x ÷ b

17. Solving/evaluating algebraic expressions Given the values of the variables

19. Variables: letters with different values.

21. p.e.m.d.a.s. (order of operations) P - Please E - Excuse M - My D - Dear A - Aunt S - Sally P – Parenthesis E – Exponents M – Multiplication D - Division A - Addition S - Subtraction P.E.M.D.A.S.

22. EXAMPLES X² + 4x – 2 (x = 3) Substitute # Value. (3)² + 4(3) – 2

23. solution Calculate solution. P. No parenthesis E. (3)² = 9 9 + 4(3) – 2 M. (4·3) = 12 9 + 12 – 2 D. No division (9 + 12) = 21 21 – 2 S. (21 – 2) = 19 Solution = 19

24. Multiple variables SOLVE JUST LIKE 1 VARIABLE Substitute # value for variable. 2. Calculate solution by ORDER OF OPERATIONS. (Left to right.)

25. example A = 1 B = -4 C = 10 D = 22 E = -6 A+ B - C + D + E 1 + (-4) - 10 + 22 + (-6) (Left to Right) -3 - 10 + 22 + (-6) -13 + 22 + (-6) 9 + (-6) = 3 Solution = 3

26. Ta – da!!! NOW YOU KNOW HOW TO (1) GIVE A VERBAL DESCRIPTION FROM SYMBOLIC FORM (2) WRITE AN EXPRESSION FROM A DESCRIPTION AND (3) EVALUATE EXPRESIONS GIVEN VARIABLES.