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# Section 5.1 and 8.3

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### Section 5.1 and 8.3

1. 1. What is a fraction?<br />
2. 2. Learning Target:Students will learn how to write fractions/ratios and equivalent fractions/ratios. They will also learn how to write fractions/ratios in simplest form.<br />
3. 3. FractionTop number: Numerator – is the counting number. It is a multiplier. It tells how many parts we have.Bottom number: Denominator – indicates by what number the whole has been divided in. Therefore it is a divisor. (cannot equal 0)<br />
4. 4. as a count of three things called fourths is three times what you get when you divide a whole into four parts<br />
5. 5. http://www.imaginativeteacher.com/images/fractions_3bmu.jpg<br />Name the fractions<br />
6. 6. Another way to compare two numbers is a Ratio.The Ratio of a number a to a nonzero number b is the quotient when a is divided by b.<br />
7. 7. A ratio can be expressed three ways:• Using the fraction bar (division line) 35• Using a colon symbol as in 3 : 5• Using the “to” as in 3 to 5.<br />
8. 8. Write the ratio of 2 flutes to 16 clarinets in 3 ways. (Hint: What you read first goes first. What you read second goes second.) <br />
9. 9. Fractions/ratios are considered equivalent if they represent the same amount. To find equivalent fractions/ratios multiply or divide the numerator and denominator by the same nonzero number.<br />
10. 10. http://www.visualfractions.com/RenameHigherCircle/Highercircle1.gif<br />
11. 11.
12. 12. Write two fractions that are equivalent to the given fraction.35<br />
13. 13. Answers:6 , 910 15<br />
14. 14. Complete the statement.2 ?5 35<br />
15. 15. Answer:? = 14<br />
16. 16. When is simplification helpful? Harmful?<br />
17. 17. A fraction/ratio is in simplest form when its numerator and denominator cannot be divided by anything except 1. (GCF = 1)To simplify a fraction/ratio divided both the numerator and denominator by their GCF.<br />
18. 18. Write the fraction/ratio in simplest form.12 : 16<br />
19. 19. Answer:3 : 4<br />
20. 20. Can you write fractions/ratios?Can you write equivalent fractions/ratios? Can you write fractions/ratios in simplest form.<br />