Exam 2: Signed Numbers and Powers of 10

Perform the indicated operations using the laws of exponents. Express the result using positive exponents. $\frac { 1 } { 10 ^ { 6 } }$

Perform the indicated operations using the laws of exponents. Express the result using positive exponents. $10 ^ { 6 } \cdot 10 ^ { 8 }$

Multiply. $( - 6 ) ( - 13 )$

Subtract. $( - 6 ) - ( + 3 )$

Divide. $( - 30 ) \div ( - 5 )$

Compute the value of the expression. $- 20 + ( - 26 )$

Perform the indicated operations using the laws of exponents. Express the result using positive exponents. $\left( 10 ^ { 2 } \right) ^ { - 7 }$

Find the absolute value of the number. $+ 3$

Perform the indicated operation (write each result in scientific notation with the decimal part rounded to three significant digits when necessary). $\left( 4 \times 10 ^ { - 9 } \right) \left( 6 \times 10 ^ { - 7 } \right) =$$\underline { \quad\quad\quad\quad }$ × $\times 10$$\underline { \quad\quad\quad\quad }$

Multiply. $( - 8 ) ( 2 )$

Perform the indicated operation. $9 - 9 - 2 + 1 - 8 + 3$

Multiply. $( - 5 ) ( 0 )$

Perform the indicated operations and simplify. $\left( \frac { - 1 } { 2 } \right) + \left( \frac { 1 } { - 9 } \right)$

Find the absolute value of the number. $- 12$

Write the number in decimal form. $5 \times 10 ^ { 10 }$

Compute the value of the expression.   $+ 4 + ( - 6 )$

Perform the indicated division and simplify your answer. $\left( - \frac { 9 } { 4 } \right) \div \left( \frac { 7 } { 12 } \right)$

Compute the value of the expression. $- 20 + 16 + ( - 2 ) + ( - 3 )$

Divide. $\frac { 266 } { 19 }$

Compute the value of the expression. $- 19 + 13 + ( - 1 ) + ( - 3 )$