STANDARD: NUMBER SENSE
LEVEL: EM M - H
PURPOSE: To realize the need for Order of Operations and develop the basic skills of doing the correct order
Parenthesis & Grouping Symbols
Multiplying (L to R - either order)
Adding (L to R either order)
DIRECTIONS: Simplify each expression (find the final answer) by applying the correct Order of Operations. WRITE ANSWERS ON PAPER - promotes a good "math work ethic of using mental math with paper & pencil, as well as, caluclators.
HINT: 1) Recognize that adding & subtracting are done LAST (look at them as terms). For example,
25 x 3 + 10 / 2
do both sides of the addition sign first,
then "put together" the two sides.
75 + 5 = 80
2) You must do the top & bottom of the grouping symbols (division line) before you can divide. For example, before you can subtract something from 10, you have to know what it is
5+3 = 8 (above the line)
(22 x 2) = 8 (below the line)
now, divide 8 / 8 = 1
to finish the Grouping Symbols. Now, you have something to subtract from 10.
Last, do 10 1 = 9.