 # Parent Math Fraction Operations

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Parent Math Fraction Operations

Pre-requisite Skills:
ONE IN DISGUISE: any number over itself (divided by itself) Ex: Equivalent Fractions: Multiply by a ONE IN DISGUISE Ex. Reduce / Simplify Fractions: Divide by a ONE IN DISGUISE Ex: Mixed and Improper Fractions: Mixed: Improper:

You multiply straight across!
BASEBALL SCENARIO: You’re SAFE when … To Multiply Mixed Numbers, Whole Numbers and Fractions: * NOTE! You multiply straight across! Turn all mixed or whole numbers into improper fractions. Multiply straight across! Simplify answer (mix and reduce). You can cancel in the problem or after!

Turn all mixed or whole numbers into improper fractions.
To Divide Mixed numbers, Whole Numbers and Fractions: Turn all mixed or whole numbers into improper fractions. Flip the 2nd fraction (RECIPROCAL). Multiply (see multiplication notes)

SONG! When you add and subtract . . . LINE ‘EM UP!
Add and Subtract Fractions and Mixed Numbers (WITHOUT BORROWING) SONG! When you add and subtract LINE ‘EM UP! You must have a CD (common denominator) – make them using equivalent fractions. Add or subtract the numerators. Keep the same denominator. Simplify answer (mix and reduce).

BORROWING from Whole Numbers
Note! You can’t take somethin’ from nothin’ So what do you do? Rename the whole number to show a fraction. (Borrow a ONE and disguise it!)

Subtract with BORROWING!
There are three methods of borrowing a ONE and including it in an existing fraction. BIG 1 Add ONE IN DISGUISE