Pre-Algebra Examples

$18 \div 30$

Step 1

To convert from slope to percent grade, multiply the slope by a hundred.

$18 \div 30 = 18 \div 30 \cdot 100$

Step 2

Rewrite the division as a fraction.

$\frac{18}{30} \cdot 100 %$

Step 3

Cancel the common factor of $10$ .

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Step 3.1

Factor $10$ out of $30$ .

$\frac{18}{10 (3)} \cdot 100 %$

Step 3.2

Factor $10$ out of $100$ .

$\frac{18}{10 \cdot 3} \cdot 10 \cdot 10 %$

Step 3.3

Cancel the common factor.

$\frac{18}{10 \cdot 3} \cdot 10 \cdot 10 %$

Step 3.4

Rewrite the expression.

$\frac{18}{3} \cdot 10 %$

Step 4

Combine $\frac{18}{3}$ and $10$ .

$\frac{18 \cdot 10}{3 %}$

Step 5

Simplify the expression.

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Step 5.1

Multiply $18$ by $10$ .

$\frac{180}{3 %}$

Step 5.2

Divide $180$ by $3$ .

$60 %$