Variables and Expressions
What are the 4 operations we are working with?
Addition, Subtraction, Multiplication, and Division
What is the order of operation? What does that mean?
mathematical rules that say which mathematical operation comes first and the order to solve the numerical expression.
What do we do when we have brackets?
We treat them at parentheses and solve what is inside using order of operations.
What are some keywords for addition and subtraction?
Add: plus, added, sum
Subtraction: minus, less, less than, the difference
What operation does each letter stand for? PEMDAS
Parentheses
Exponent
Multiplication
Division
Addition
Subtraction
Evaluate the following expression:
3.1 + (9.6 - 2.3)
10.4
What are the keywords of multiplication and division?
Multiplication: times, product
Division: divided, quotient
In the following problem, what operation should we do first:
5 x 2 + 12 ÷ 6
Multiplication
Using order of operations, which is the last operation you should perform to evaluate this expression?
(1 x 2.5) + (52 ÷ 13) + (5- 6.7) - (98+ 8)
A. Addition B. Subtraction C. Multiplication D. Division
B. Subtraction
Write the word phrase into a numerical expression:
the quotient of 120 and 8
120 ÷ 8
Find the value of the following expression using order of operations:
(29-18) + 14 ÷ 2 + 6
24
Evaluate the following expression:
(9.9 + 3.6) ÷ 0.25
54
Write the following word phrase into a numerical expression:
4 less than the quotient of 50 divided by 2
50 ÷ 2 - 4
Evaluate the expression:
2 x 16 + 4 x 4 - 10
38
Evaluate the expression:
18.9 - [(33.3 ÷ 11.1) x 6]
0.9