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.
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)
as a count of three things called fourths is three times what you get when you divide a whole into four parts
http://www.imaginativeteacher.com/images/fractions_3bmu.jpg Name the fractions
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.
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.
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.)
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.
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.
Write the fraction/ratio in simplest form.12 : 16