Fraction Action

When you add fractions you need

• common denominators
• to keep change flip
• to add the denominators
• put the larger number first

When you subtract fractions you need

• common denominators
• to keep change flip
• to add the denominators
• put the larger number first

When you multiply fractions you

• see if you can cross cancel and then multiply the numerators and multiply the denominators
• keep change flip then multiply the numerators and multiply the denominators
• find common numerators
• add the numerator to the denominator

When you divide fractions you

• keep change flip then multiply the numerators and multiply the denominators
• see if you can cross cancel and then multiply the numerators and multiply the denominators
• find common numerators
• add the numerator to the denominator

When you add what do you do with the common denominator when you find the sum of the problem?

• You just slide the common denominator over
• You add the denominators
• You multiply the denominators
• You square the denominators

When you subtract fractions what do you do with the common denominator when you find the difference between the numbers?

• You just slide the common denominator over
• You subtract the denominators
• You multiply the denominators
• You square the denominators

When you cross cancel you

• see if the numerator of each fraction has a common factor with the denominator of the other fraction ex. 1/2 * 2/3 the 2's can be reduced to 1 before multiplying
• find common denominators
• find common numerators
• find the answer that has a lot of words and an example with numbers because that is it 3/4*5/6 is a fraction multiplication problem so have a good day

common denominator

• the number below the fraction bar is the same for both fractions in the equation
• the number above the fraction bar os the same for both fractions in the equation
• multiplying by the reciprocal
• reducing the answer down to simplest form

To make an improper fraction you

• Multiply the whole number by the denominator of the faction in the mixed number and add that to the numerator
• Add the whole number to the denominator
• Add the whole number to the numerator (ex 2 2/3= 4/3)
• Subtract the numerator from the whole number

When you multiply or divide mixed numbers you

• must make improper fractions from the mixed numbers
• keep change flip
• multiply or divide the whole numbers then multiply or divide the fractions
• you can't