Multiplying Fractions and Mixed Numbers and Cross Reducing

One way to divide fractions is to...

• multiply the first fraction by the reciprocal of the second fraction.

• add the numerators and subtract the denominators.

• cross multiply the fractions.

• convert the fractions to equivalent fractions with the same denominator and compare them.

Tags

CCSS.6.NS.A.1

A mixed number is...

• a whole number and a fraction combined into one number.

• a number that is confused.

• a fraction with a numerator greater than the denominator.

• a decimal number less than one.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

When multiplying or dividing fractions...

• find the GCF first.

• the fractions must be improper.

• the denominators must be alike.

• the denominators do not need to be alike.

Tags

CCSS.5.NF.B.6

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

Tags

CCSS.5.NF.B.6

Multiply: Make sure to reduce if you can
2/7 x 2/3

• 4/21

• 6/14

• 5/14

• 5/9

Tags

CCSS.6.NS.B.3

• 6  3/20
• 5  4/9
• 6  4/15
• 8  1/4

Tags

CCSS.5.NF.B.6

Multiply.

• 85/6

• 10 2/6

• 14 1/6

• 10 1/3

Tags

CCSS.7.NS.A.2A

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

Tags

CCSS.6.NS.A.1

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

Tags

CCSS.7.NS.A.2A

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

Tags

CCSS.7.NS.A.2A