Chapter 3 - Integers & Equations

3-1 Evaluating & Writing Variable Expressions

100

Vocabulary term - A _____________ is a symbol that stands for a number.

Variable

200

Which variable expression shows "3 less than a number"?

A. n-3

B. 3-n

C. 3<n

A n-3

300

If p=4 and n=6 then what does 5p+3 equal?

23

400

If p=4, n=6, and s=2, then what does (p+n) / s

5

500

Suppose you want to buy two movies and a $7 snack. Use the variable expression

2m+7. Find the total cost of your purchase if each movie costs $9.95.

$26.90

3-2 Comparing & Ordering Integers

100

What integer would you use to represent 5 degrees below zero?

-5

200

Order the following numbers from least to greatest:

-9, 6, 0, -4, 1

-9, -4, 0, 1, 6

300

What is the absolute value of -25?

25

400

Would the following be represented by a positive or negative integer?

A loss of 10 yards in a football game. 

negative

500

Order the integers from least to greatest:

7, -6, 0, -3, 1

-6, -3, 0, 1, 7

3-3 Adding Integers

100

Find the sum:

-5+(-4)

-9

200

Find the sum:

12+(-7)

5

300

Find the sum:

3+(-3)

0

400

Find the sum:

-10+3

-3

500

Find the sum:

3+(-12)

-9

3-4 Subtracting Integers

100

Find the difference:

4-7

-3

200

Find the difference

-1-5

-6

300

Find the difference:

-6-10

-16

400

Find the difference:

-2-(-8)

6

500

Find the difference:

-3-(-3)

0

Solving Equations

100

Solve for g

-7+g=10

g=17

200

Solve for b

8+b=0

b=-8

300

Solve for k

-3k=-18

k=6

400

Solve for x

x / 18 = -40

x=-720

500

Solve for n

2n+5=7

n=1