Reducing (Simplifying) Fractions

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Presentation transcript:

Reducing (Simplifying) Fractions You can use the divisibility rules to help you reduce fractions! (See, I told you this skill would come in handy  )

A number is divisible by 2 if…

A number is divisible by 2 if… it is even.

A number is divisible by 3 if…

A number is divisible by 3 if… the sum of the digits is divisible by 3.

A number is divisible by 4 if…

A number is divisible by 4 if… the number formed by the last two digits is divisible by 4.

A number is divisible by 5 if…

A number is divisible by 5 if… it ends in a 5 or 0.

A number is divisible by 6 if…

A number is divisible by 6 if… it is divisible by 2 and 3.

A number is divisible by 9 if…

A number is divisible by 9 if… the sum of the digits is divisible by 9.

A number is divisible by 10 if…

A number is divisible by 10 if… it ends in a 0.

A number is divisible by 11 if…

A number is divisible by 11 if… it has a double digit (up to 99).

To reduce (simplify) fractions divide by the numerator and denominator by the same number. What you’re really doing is dividing by ONE! Use the divisibility rules to help you to find common factors to use to reduce.

To simplify divide both numbers by

To simplify divide both numbers by 10.

To simplify divide both numbers by

To simplify divide both numbers by 4.

To simplify divide both numbers by

To simplify divide both numbers by 5

To simplify divide both numbers by

To simplify divide both numbers by