Writing Expressions
2n ÷ 7
w + 1 +1 + y + 1
w=1
y=16
20
How many terms are in this expression?
8n + 3k + 4
3
324
Each painting class Jill teaches is h hours long. She teaches 6 classes per week. Write the expression that shows the total number of hours she teaches. She taught for 3 hours each day. Solve.
Expression: 6h
Solution: 18
four less than three times a number
3x-4
h × 14 ÷ g × j
for g = 7, h = 2, and j = 4.
16
What is the coefficient of the first term in this expression?
k + n
1
4 ( 6 - 5 + 4) x 9
180
Mason’s mom bought g games online. The games cost $12 each plus a $7 shipping fee. Mason's mom bought 4 games online. Write the expression and solve.
Expression: 12 + 7g
Solution: 40
Mom made an apple pie with eight slices last Sunday. She served a total of four people.
Using x, write an algebraic expression representing the number of slices each person will get.
8 - 4x
h + g ÷ 9 × 5
for g = 18 and h = 4
14
How many terms? What are the coefficients in this expression?
10s + 4 + t
3 terms
10, 1
5 + 10 (8 +21/3)
155
It takes b minutes for Sylvia's bathtub to fill with water.
How many minutes will it take to fill 3 same-size bathtubs? It took him 20 minutes to fill one.
Write your answer as an expression and solve.
Answer: 60
Jim ate six times the combination of candy and bubblegum that he was allowed.
Write an algebraic expression for the amount he ate using c for candy and b for bubblegum.
Let x present the number.
6 (c + b)
n ÷ 2 − 2 × k × 2 ÷ m
for k = 20, m = 8, and n = 20.
0
Label each part of the expression.
8k + 1 + m
8, 1: coefficients
k, m: variables
3 terms
1: constant term
6 ( 28 / 7 +14 / 7) + 8
44
While playing Gimkit, players start with a score of 200 points. They earn 7 points for each fish they catch and 50 points for each question they answer correctly. Becky catches 4 fish and answers 5 questions correctly. Write and evaluate an algebraic expression to find Becky’s score. Use (f) for the amount of fish caught and (a) for the number of questions answered correctly.
200 +7f + 5a
153
4 friend evenly divided up an n-slice pizza. One of the friends, Harris, ate 1 fewer slice than he received. How many slices of pizza did Harris eat?
n/4 -1
y(x − (9 − 4y))
use x = 4, and y = 2
6
Label each part of the expression
9s +7q + 5 - n/3
9, 7, 1: coefficients
4 terms
s, q, n: variables
5: constant term
(8 + 20 / 10) + 36/ 4 + 3
22
Ethan rollerbladed a total of 623 over d days. He rollerbladed the same distance each day. He rollerbladed for 5 days.
How many kilometers did Ethan rollerblade each day?
Write your answer as an expression and solve.
Expression: 623/d
Solution: 124.6