Vocabulary
A mathematical statement that uses operations and numbers.
What is a numerical expression?
x-5
What is subtraction?
x + 23
What is 'Some number x plus 23'?
14 added to some number
What is x + 14?
8x when x=6
What is 48?
A mathematical statement that includes at least one operation and variable.
What is an algebraic expression?
4n
What is multiplication?
100z
What is '100 times some number z?'
The difference of 20 and some number
What is 20-x?
7m + 10 when m = 6
What is 52?
A letter that represents an unknown number.
What is a variable?
88/11
What is division?
46/k
What is '46 divided by some number k?'
The product of 40 and a number
What is 40x?
17w -9 when w=2
What is 25?
To put a number in place of a variable.
What is substitute?
12w + 2
What is multiplication and addition?
2f - 18
What is 'Twice a number minus 18?'
4 less than a number
What is x-4?
30y/5 when y=2
What is 12?
To find the numerical value of an algebraic expression.
What is evaluate?
x/2 - 3
What is division and subtraction?
10y/2
What is '10 times a number divided by 2?'
9 times the sum of a number and 3.
What is 9(x+3)?
(7x -y) + y/x when x=2 and y=10
What is 9?