Writing Expressions
The sum of a number and 40
a+40
evaluate: 4x+1 x= 5
21
Are the expressions equivalent? x+x and 2x
Yes
Replacing one symbol with a number or a variable.
Substitution
What math function does the term " half " fall under?
Division
The product of 5 and a number.
5x
evaluate if x=10 30/x + 5
8
What are the coefficients in this expression? 8x + 4j -15
8 and 4
A variable is.....
A letter or symbol representing an unknown value.
What math function does the term " combine " fall under?
addition
The difference of 7 times a number and 10.
7x - 10
evaluate: b2 - 5 b = 6
31
What are the like terms in this expression? 5x+3z - 7x +9
5x and -7x
This is a number in an expression that never changes. What is it?
Constant
What math function does the term " fewer than" fall under?
subtraction
8 more than the the quotient of a number and 15.
k/15 + 8
evaluate if x=2 and y=3 4x - 2y
2
Combine Like Terms and rewrite the expression: 7h + 4c - 5h - 12
2h + 4c - 12
12 - 9 x 4 Is this a algebraic or a numerical expression?
Numerical expression.
What math function does the term " twice " fall under?
multiplication
A number less than 10.
10-k
evaluate if x=5 and y=12 3(x+y)
51
What is the coefficent of x?
1
These are separated by subtraction and addition signs in an expression. What are they?
Terms
What math function does the term " is " fall under?
equals