1. Aim: How can we remember the order of operations?
October 19, Math 102
Objective: Students will use the order of operations to simplify expressions.
Aim: How can we remember the order of operations?
NYS Mathematics Standards: 7.N.11
Prior Knowledge: Find the value of each expression:
5 + 11= (-8) = -24 / 2 =
21 – (-7) = -5 – 7 = -6 / -2 =
8 x 7 = 3 x -7 = / -9 =

2. + - X / 25 Mini-lesson: (parentheses) 1. Simplify grouping symbols
Order of Operations
Symbol
1. Simplify grouping symbols
(parentheses)
2. Simplify exponents
exponent 25
base
3. Multiply and divide in order from left to right
X /
4. Add and subtract in order from left to right

3. Guided Practice: Find the value of 13 x (5-2) + 42
Simplify grouping symbols
13 x =
Simplify exponents
13 x =
Multiply and divide in order from left to right =
Add and subtract in order from left to right 55

4. Guided Practice:
When simplifying an expression, what is the first symbol you should look for?
When multiplying and dividing, in what direction do you work?
In the expression, / 2 x 2, what operation is done first?

5. (Mr. Brooks will model in class)
Turn to page 361, problem 5
(Mr. Brooks will model in class)
Now you tell Mr. Brooks (raise your hand!) how to fill in the blanks for Problems 6 and 7
Independent Practice
Complete exercises 19,25, 29, 32 and 35, while Mr. Brooks visits each student to review his/her work.
Homework Lesson 8 – 7 Homework Practice worksheet