### Home > CC3MN > Chapter 10 > Lesson 10.3.1 > Problem10-85

10-85.

Simplify each expression. In parts (c) and (d) write your answers using scientific notation.

1. $2^3\cdot5^{-2}$

• $\frac{8}{25}$

1. $( x y ^ { 2 } ) ^ { 3 } \cdot ( x ^ { - 2 } )$

1. $3 \times 10 ^ { 3 } \cdot 4 \times 10 ^ { 5 }$

• Remember to write your answer in scientific notation.

1. $\frac { 4 \times 10 ^ { 2 } } { 5 \times 10 ^ { - 2 } }$

$8000$