Unit 6 Review

What is the prime factorization of 320? 

• 32 $\cdot$  10

•  $2^6$   $\cdot$  5

•  $2^5$   $\cdot$   $5^2$  

• 8 $\cdot$  4 $\cdot$  10

What is the prime factorization of 440?

• $2^3$ $\cdot$ 5 $\cdot$ 11

• 44 $\cdot$ 10

• 8 $\cdot$ 5 $\cdot$ 11

• $2^2$ $\cdot$ 5 $\cdot$ 11

2 + $4^2$  $\div$  ( - 4 )

• 6

• -4

• -2

• 0

 $2^3$  + 5 ( 10 - 3 ) 

• 41

• 20

• 18

• 43

Which of these can be written as an equation?

• 2 times b is 50

• 5 more than 8

• half of 16

• 2 times x plus 15

Which of the following is an equation?

• 2x

• 5+9+10-20+16

• 3x=9

• 4(2+6)

( 5 $\cdot$  10 ) + 2  $\cdot$  7

• 364

• 64

• 29

• 54

Which expression is equivalent to the model?

• 16

• 4 $\cdot$ ( x + 3 )

• 4x + 3

• x + 12

Which expression is equivalent to   (30+6) $\div$ 9

• 30 + 6  $\div$  6

• ( 2  $\cdot$  2 $\cdot$  3 $\cdot$  3)  $\div$  ( 3 $\cdot$  3) 

• 36  $\div$  4

• 5  $\cdot$  6 + 2 $\cdot$  3 $\div$  3 $\cdot$  3

Which expression is equivalent to           20 $\div$  ( 5 + x )

• 20  $\div$  5 + x 

• 20  $\div$  ( x + 5) 

• ( x + 5 )  $\div$  20 

• ( 20  $\div$  x ) + 5