Rational Number Operations Cheat Sheet

RATIONAL NUMBER OPERATIONS CHEAT SHEET

MULTIPLY OR ADD SUBTRACT DIVIDE WHEN SIGNS ARE THE SAME 1.) Keep, change, change. 1.) Multiply or divide. 1.) Add the numbers. 2.) Follow addition rules. 2.) Use SPUN 2.) Keep the sign

WHEN SIGNS ARE DIFFERENT 1.) Subtract the numbers. 2.) Keep the sign of the ABSOLUTE VALUE of the larger number. (The bigger number without the sign!)

RATIONAL NUMBER OPERATIONS CHEAT SHEET

MULTIPLY OR ADD SUBTRACT DIVIDE WHEN SIGNS ARE THE SAME 1.) Keep, change, change. 1.) Multiply or divide. 1.) Add the numbers. 2.) Follow addition rules. 2.) Use SPUN 2.) Keep the sign

WHEN SIGNS ARE DIFFERENT 1.) Subtract the numbers. 2.) Keep the sign of the ABSOLUTE VALUE of the larger number. (The bigger number without the sign!) OPERATIONS WITH FRACTIONS CHEAT SHEET

IMPROPER MULTIPLY OR ADD OR SUBTRACT FRACTION MIXED DIVIDE NUMBER WHEN DENOMINATORS MULTIPLY IMPROPER FRACTION ARE THE SAME 1.) Multiply across for the TO MIXED NUMBER 1.) Add the numerators. numerator and denominator. 1.) Divide the denominator 2.) Keep the denominator. into the numerator. DIVIDE WHEN DENOMINATORS 1.) Keep, Change, Flip MIXED NUMBER TO ARE DIFFERENT 2.) Multiply! IMPROPER FRACTION 1.) Find common denominator. 1.) Multiply the denominator 2.) Find the equivalent by the whole number fraction(s). 2.) Add the numerator. 3.) Use addition rule above! 3.) Put the sum from step 2 over the original denominator.

OPERATIONS WITH FRACTIONS CHEAT SHEET

MULTIPLY OR IMPROPER FRACTION ADD OR SUBTRACT DIVIDE MIXED NUMBER WHEN DENOMINATORS MULTIPLY IMPROPER FRACTION ARE THE SAME 1.) Multiply across for the TO MIXED NUMBER 1.) Add the numerators. numerator and 1.) Divide the denominator into 2.) Keep the denominator. denominator. the numerator.

WHEN DENOMINATORS DIVIDE MIXED NUMBER TO ARE DIFFERENT 1.) Keep, Change, Flip IMPROPER FRACTION 1.) Find common denominator. 2.) Multiply! 1.) Multiply the denominator 2.) Find the equivalent by the whole number fraction(s). 2.) Add the numerator. 3.) Use addition rule above! 3.) Put the sum from step 2 over the original denominator.