Algebra Review

Creating Expressions

100

a number plus 5

n + 5

200

6 minus a number

n - 6

300

The quotient of a number and 16

n ÷ 16

400

The product of n and 7

n x 7

500

The sum of two numbers and 7

p + n + 7

Miscellaneous

100

This is used to represent an "unknown" in algebra

What is a "variable"

200

Create an equation for the following: 7 less than a number equals 9.

n - 7 = 9

300

What does an equation have that an expression doesn't?

an equals (=) sign...."an answer" can also be accepted

400

Create an equation for the following: the quotient of a number and 5 equals 25

n ÷ 5 = 25

500

List at least 5 strategies you can use when solving word problems.

Read the entire problem, get rid of useless information, highlight key terms, highlight key numbers, take your time, see if you can draw a picture, draw at table/chart, make a list, work backwards, guess and check, mental math, paper and pencil

Solving for a Variable

100

x + 3 = 7

x = 4

200

p - 15 = 4

p=19

300

g + 123 = 178

g = 55

400

n + 432 = 562

n = 130

500

n - 1,231 = 5,112

n = 6,343

Solving for a Variable 2

100

p x 3 = 21

p = 7

200

g x 5 = 70

g = 14

300

n ÷ 64 = 8

n = 8

400

n ÷ 8 = 546

n = 4,368

500

p x 18 = 288

p = 16

Word Problems

100

Mike, Susan, and Reece all go bowling on the weekends. It cost $5.75 to bowl. If only Reece and Susan can go this weekend, how much will the total cost be for bowling?

$11.50

200

Raquel has 235 bins of buttons. If each bin has 15 buttons in it, how many buttons does she actually have?

3,525 buttons

300

Lindley started with $90 on Monday. Each day she lost $7. How much money did she have left on after Saturday?

$55.00

400

Johnson went to the store and bought steak for $9.79, chicken for $7.32, and pancake mix for $2.98. If his total bill was $23.45, how much money did he spend on other items not listed above?

$7.32 + $2.98 + $9.79 = $20.09.....then $23.45-$20.09= $3.36

500

Julian bought 9 packages of cat food and 5 packages of dog food. Each package of cat food contained 5 cans, and each package of dog food contained 4 cans. How many more cans of cat food than dog food did Julian buy?

25 more cans