Writing Expressions
The sum of a number and 40
a+40
evaluate: 4x+1 x= 5
21
What is one-half of 2130?
What is 1065?
Replacing one symbol with a number or a variable.
Substitution
What math operation does the term " half " fall under?
Division
The product of 5 and a number.
5x
evaluate if x=10 30/x + 5
8
Find the volume of a box that is 10 inches by 5 inches by 1/2 inches.
25 cubic inches
What is a variable is?
A letter or symbol representing an unknown value.
What math operation does the term " combine " fall under?
addition
The difference of 7 times a number and 10.
7x - 10
evaluate: b2 - 5 b = 6
31
Volume of a rectangular prism is 70 cubic units. Area of the base is 35 square units. What is the height of the rectangular prism?
What is 2 units?
This is a number in an expression that never changes. What is it?
Constant
What math operation 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
What is the formula for the area of a triangle
A=1/2 bh
( 12 - 9 x 4 ) Is this a algebraic or a numerical expression?
Numerical expression.
What math operation 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
Which does not belong?
1/2, 1.2, 4/8, 0.5, 50%
1.2
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