Algebraic Expressions with Subtraction and Multiplication
Name: _______________________________
Date: _______________________________
Part A: Writing Expressions
Write an algebraic expression for each statement. Use the letter given in brackets.
1.
Multiply n by 5, then subtract 3 (use n): _______________________________
2.
Subtract 8 from x, then multiply by 2 (use x): _______________________________
3.
7 times p, minus 12 (use p): _______________________________
4.
Take away 15 from m, then multiply the result by 4 (use m): _______________________________
5.
6 multiplied by y, then subtract 20 (use y): _______________________________
Part B: Evaluating Expressions
Find the value of each expression when the given value is substituted.
6.
3n − 7 when n = 5
Answer: _______________________________
7.
8x − 10 when x = 4
Answer: _______________________________
8.
2(a − 6) when a = 12
Answer: _______________________________
9.
5t − 18 when t = 7
Answer: _______________________________
10.
4(b − 9) when b = 15
Answer: _______________________________
Part C: Challenge Problems
Solve these problems using algebraic expressions.
11.
If 6m − 14 = 22, what is the value of m?
m = _______________________________
12.
Write an expression for: "Subtract 11 from k, then multiply by 3"
Expression: _______________________________
Evaluate when k = 20: _______________________________