Exponents and powers

 $Which\ \exp ression\ is\ equivalent\ to\ 2\left(5\right)^4$ ? 

• 2 x 5 x 4

• 2 x 5 x 5 x 5 x 5

• 2 x 4 x 4 x 4 x 4 x 4

• 10 x 10 x 10 x 10

What is the base of the expression 11¹² ?

• 3

• 11

• 12

• 21

Which expression is equivalent to 9⁵?

• 9 x 5

• 5 x 5 x 5 x 5 x 5 x 5 x 5 x 5 x 5

• 9 x 9 x 9 x 9 x 9

• 9 x 9 x 9 x 9 x 9 x 5 x 5 x 5 x 5 x 5 x 5 x 5 x 5 x 5

which expression is equivalent to -4 x 4 x 4 x 4 x 4 x 4 x 4 x 4?

• -4⁸

• -8⁴

• (-8)⁴

• (-4)⁸

 $which\ \exp ression\ is\ m\cdot m\cdot m\cdot m\cdot m\ ?$  

•  $m^5$  

• 5m

•  $5^m$  

• m + 5

 $p\cdot q\cdot q\cdot q\cdot q\cdot q\cdot q\cdot q\cdot q\cdot q$                                       Which expression is equivalent to the multiplication above?

•  $pq^9$  

•  $\left(pq\right)^9$  

• 9pq

•  $\left(pq\right)^{10}$  

What is the value of -5⁶ ?

• -15,625

• -30

• 30

• 15,625

 $What\ is\ the\ value\ of\ \left(\frac{3}{10}\right)^{3\ \ }?$  

•  $\frac{3}{1000}$  

•  $\frac{27}{1000}$  

•  $\frac{9}{10}$  

•  $\frac{27}{10}$  

Haley's work evaluating (-2)⁸ is shown below.

(-2)⁸ = (-2)(-2)(-2)(-2)(-2)(-2)(-2)(-2) = -256

Which statement BEST describes Haley's first error

• She used the wrong number as a repeated factor and should have evaluated -2 x 2 x 2 x 2 x 2 x 2 x 2 x 2.

• She used the wrong number as a repeated factor and should have evaluated - (8 x 8).

• She misinterpreted the exponential form and should have multipled -2 and 8.

• She made a sign error when multiplying and should have had 256 as the final answer.

Which expression is equivalent to 6³ ?

• 6 x 3

• 6 x 6 x 6

• 6 x 6 x 6 x 6

• 3 x 3 x 3 x 3 x 3 x 3