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**Video Description:**

In a future time, when AI robots have taken over running pizzerias on a planet orbiting Alpha Centauri, the robot Zigon takes orders and then adds and subtracts fractions before the Pizzamatic-5000 serves up large pepperoni and cheese pizzas for its alien visitors! Adding Fractions has never been so stellar or astral.

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1 - **NUMBEROCK's Adding & Subtracting Fractions with Unlike Denominators Fun Pack**

2 - **NUMBEROCK's Adding & Subtracting Fractions with Unlike Denominators Task Cards**

3 - **NUMBEROCK's Adding & Subtracting Fractions with Unlike Denominators Google Classroom Digital Task Cards**

*Aligned With Common Core Standards 4.NF.3, 5.NF.1, and 5.NF.2 and TEK Standards 4.3E & 5.3H*

**Adding & Subtracting Fractions Song Lyrics:**

This is how the least common multiple’s found:

write a list of each denominator’s multiples down;

the smallest number you can find in both of them

is the least common multiple (a.k.a. the LCM.)

The least common multiple can also be

called the least common denominator - or LCD.

It stays the same in the difference or the sum

when you subtract or add two fractions.

Three-sixths of a pizza minus one-fourth:

find the LCM, which is twelve, of course.

(Twelve is the least common denominator.)

Make equivalent fractions (six-twelfths and three-twelfths).

Then, do the subtraction: six minus three is three...

three-twelfths of a pizza at the pizzeria.

Chorus:

Find the least common multiple; that’s the first action.

Next, is finding equivalent fractions.

Then, do the addition or subtraction.

Simplify like an automatic reaction.

Two-fourths of a pizza plus one-fifth:

it smelled so good we had to give it a sniff.

The LCM was twenty (the new denominator).

We found equivalents quickly: ten-twentieths plus four-twentieths... fourteen-twentieths of a pizza at the pizzeria.

(Chorus)

Five-sixths of a pizza minus one-third:

I knew the LCM was six, and have you heard?

It’s also called the least common denominator.

I found equivalent fractions (five-sixths and two-sixths).

Then, I did the subtraction: five minus two is three...

three-sixths of a pizza at the pizzeria.

(Chorus)