Operations With Rational Numbers and Like Denominators

When adding or subtracting RATIONAL NUMBERS with LIKE DENOMINATOR denominator you should

• multiply the denominators

• add or subtract the numerators

• keep the denominator

• simplify if need

What must you do first when dividing rational numbers

• MULTIPLY AND THEN SIMPLIFY

• FIND THE RECIPROCAL OF THE DIVISOR

• CROSS PRODUCT

• ADD

A fraction represents which operation

• addition

• subtraction

• multiplication

• division

When adding or subtracting rational numbers, what must you have?

• Common Numerator

• Quick Answering Skills

• Common Numbers

• Common Denominators

(-2 ⅚) + 3 ⅔

• ⅚

• - ⅚

• 6 ½

• -6 ½

⁸/₁₅  +  (-⁶/₁₅)

• 14/15

• -2/15

• 2/15

• -14/15

-1/2 + 2/3=

• 1/6

• 3/5

• 1/5

• -2/6

(-⅚) - (⅗)

• -1   13/30

• 1   13/30

• -7/30

• 7/30

Solve

• 6

• -6