Expressions and Exponents

Choose the equivalent expression for:

d+d+d+d+d

• 5d

• 5 x d

• (5)(d)

• All of the above

 $24\ \div x=4$  

x=?

• x = 4

• x = 6

• x = 8

• x = 12

 $28\div x=7$  

x = ?

• 4

• 7

• 14

• 21

How do you write 2 to the 4th power?

• 2(4)

• 2+2+2+2

• 2 power 4

• $2^4$

 $a^5$  can also be written as:

• a + a + a + a + a

• a - a- a - a -a

• a x a x a x a x a

•  $a\div a\div a\div a\div a$  

 $b^2$  and  $2b$  are different in what way?

•  $b^2$  is the same as b x b and 2b is the same as b + b

•  $b^2$  is the same as b + b and 2b is the same as b x b

• There is no difference between the two expressions.

 $2^3$  is equal to:

• 2

• 4

• 8

• 16

 $5^2$  is equal to?

• 5

• 25

• 125

• 625

 $7^2$  is just like 7 + 7

• True

• False

 $11^4$  is just like 11 x 11 x 11 x 11

• True

• False