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Unit 1 Review

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Unit 1 Review

1. 1. <ul><li>HOW TO WRITE A RATIO </li></ul><ul><li>HOW TO REDUCE A FRACTION </li></ul><ul><li>HOW TO CHANGE A DECIMAL TO FRACTION </li></ul>Review of Ratios
2. 2. How to Write a Ratio <ul><li>To write ratio, you will have two pieces. The top piece </li></ul><ul><li>is called the numerator. That is how many pieces you </li></ul><ul><li>have. The second piece is the denominator. This is all </li></ul><ul><li>the pieces in total. </li></ul><ul><li>Example: </li></ul><ul><li>3 pieces are yellow and </li></ul><ul><li>There are 8 pieces all together. </li></ul><ul><li>The ratio is 3/8. </li></ul>
3. 3. How to Reduce a Fraction <ul><li>To reduce a fraction, you look at what number both the </li></ul><ul><li>numerator and the denominator can be divided evenly </li></ul><ul><li>by. Another way to describe it is to find a common </li></ul><ul><li>factor. </li></ul><ul><li>Example: </li></ul><ul><li>4/12 … both numbers can be divided by 4. </li></ul>
4. 4. Fraction to a Decimal <ul><li>To change a fraction to a decimal, divide the </li></ul><ul><li>Numerator by the denominator. </li></ul><ul><li>Example: </li></ul><ul><li>5/10 is .5 so 5/10 = .5 </li></ul>
5. 5. Decimal to a Fraction <ul><li>To change a decimal to a fraction, the numerator is the </li></ul><ul><li>number without the decimal point. The denominator is </li></ul><ul><li>the place where the decimal ends. </li></ul><ul><li>Example, </li></ul><ul><li>.65 would be 65/100. </li></ul><ul><li>The number without the decimal is 65 and the decimal </li></ul><ul><li>ends (the 5) in the hundredths place. </li></ul>