Expressions & Variables
identify the variable in the expression: 2 + y = 5.
y
Rewrite the repeated addition x + x as a product using a coefficient.
2x
Evaluate: 15 + 8 - 3
Express d + d + d + d in coefficient form.
4d
Explain what an algebraic expression is in one sentence
An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols
Convert b + b + b + b into a multiplication expression.
4b
Evaluate: 13 - (4 + 7).
2
Convert 7x m into simpler coefficient form (write properly with coefficient and variables).
7m
For the equation 4x + 3y = 25, name two symbols that represent unknown quantities.
x and y
If f + f + f + c is written more simply, what is the result?
3f+c
Evaluate: (10 - 3) + 4.
11
Write f + f + f + f + f as an algebraic expression
5f
Write an expression that shows "the sum of a number n and 7."
n + 7
Write 5 times y using coefficient notation without the multiplication sign
5y
Evaluate: (14 - 5) + (4 - 1).
12
Evaluate: (3 + 4) - (10 - 7)
4
Translate into an algebraic expression: "Three less than twice a number m."
2m - 3
Write an algebraic expression for "eight times the product of 2 and a" and then simplify coefficient placement (hint: combine numeric factors).
8(2a)=16a
Evaluate: 10 + (2 + 3) - 10.
5
A two-part challenge: (a) Rewrite b + b + b + b + b + b + b + b using a coefficient. Then evaluate the expression if b = 3.
8b = 8x3 = 24