Exam 2: Signed Numbers and Powers of 10

Perform the indicated operations using the laws of exponents. Express the result using positive exponents. $\frac { \left( 10 ^ { - 5 } \right) ^ { - 6 } } { 10 ^ { 16 } \cdot 10 ^ { - 4 } }$

Perform the indicated operations and simplify. $\left( \frac { - 11 } { - 15 } \right) ( - 12 )$

Find the smaller number. 0.003 or 0.0005

Add. $+ 1$ $+ 2$

Add. $+ 6$ $- 1$

Multiply. $( - 11 ) ( 2 )$

Subtract. $( + 7 ) - ( - 9 )$

Divide. $\frac { - 217 } { - 31 }$

Perform the indicated operation. $- 5 + 3 - 3 + 6 - 7$

Perform the indicated operations and simplify. $\left( \frac { - 1 } { 2 } \right) \left( \frac { - 1 } { 2 } \right)$

Perform the indicated operation. $( - 13 ) - ( + 1 ) + ( - 1 ) - ( - 11 ) - ( + 10 )$

Perform the indicated operations and simplify. $- 4 \frac { 1 } { 2 } - 5 \frac { 1 } { 8 } - 2 \frac { 1 } { 16 }$

Divide. $\frac { - 78 } { - 13 }$

Perform the indicated operation. $( + 3 ) - ( - 9 )$

Perform the indicated operations using the laws of exponents. Express the result using positive exponents. $\frac { \left( 10 ^ { 0 } \right) ^ { 3 } } { 10 ^ { - 6 } }$

Perform the indicated operations (write each result in scientific notation with the decimal part rounded to three significant digits when necessary). $\frac { \left( 4 \times 10 ^ { - 2 } \right) \left( 6 \times 10 ^ { - 9 } \right) } { \left( 3 \times 10 ^ { - 4 } \right) \left( 8 \times 10 ^ { 5 } \right) } =$$\underline { \quad\quad\quad\quad }$ × $\times 10$$\underline { \quad\quad\quad\quad }$

Find the absolute value of the number. $+ 6$

Multiply. $( - 8 ) ( - 5 ) ( - 3 )$

Add. $( - 3 ) + 2 + 3 + ( - 1 ) + ( - 4 )$

Add. $+ 9$ $- 7$