Chapter 7: Algebra-Expressions

Exponents

100

Use an exponent to rewrite the expression

7x7x7x7

7⁴

200

Find the value of:

20²

400

300

Complete the expression with the correct exponent

5 ^ _=125

5³=125

400

Evaluate the expression

10+6²x2/9

18

500

Evaluate the expression

6²- (2³+5)

23

Write Algebraic Expressions

100

The sum of x and 9

x+9

200

12 divided by the sum of h and 2

12/(h+2)

300

14 more than the difference of r and s

(r-s)+14

400

the sum of 15 and the product of 5 and v

15 +5v

500

The sum of 4 multiplied by a and 5 multiplied by b

4a+5b

Evaluate Expressions

100

r-9

r=20

11

200

17-2c

c=7

3

300

(h-3)²

h=5

4

400

x+x²

x=6

42

500

d²-9k+3

d=10

k=9

22

Combine Like Terms

100

40+5e+7e

40 +12e

200

25+7+12s+4s

32+16s

300

3x+8x+2x²+17

11x+2x²+17

400

72+8+5a+14a

80+19a

500

6p-p+2p²-7+6

5p+2p²-1

Vocabulary

100

a number used as a repeated factor

base

200

a number multiplied by a variable

coefficient

300

a letter or symbol that stands for an unknown number or numbers

variable

400

a mathematical phrase that uses only numbers and operation signs

numerical expression 

500

terms that have the same variables with the same exponents

like terms