# Adding and Subtracting Fractions with Unlike Denominators with Models FREEBIE

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!

CLICK HERE to play NUMBEROCK’s printable game, create a colorful anchor chart, and get illustrated worksheets, word problems, and more for inquiring students who will be unusually motivated after watching our engaging video freebie.

Resources not included in the free version of this video:

✦ Illustrated Lyric Sheet ✦
✦ Illustrated Fill-in-the-Blanks Math Vocabulary Drill ✦
✦ Double Sided Worksheet with Word Problems ✦
✦ Extra Drills Worksheet
✦ Printable Game ✦
✦ HW Sheet ✦
✦ Colorful Anchor Chart ✦
✦ Short Quiz / Exit Quiz ✦
✦ CD-Quality Song MP3 ✦
✦ Written Out Lesson Plan ✦

Through the power of music's unique quality to lodge a message into our minds via the most frictionless of ways - a catchy melody - NUMBEROCK’s holistic math program unlocks the gate that so often blocks the smooth transition of information from the teacher to the student. Your students will be more excited about the material, more confident in test preparation, and able to perform better when it counts! CLICK HERE to see NUMBEROCK's growing library of math songs.

Video aligns with the following common core math standards

4.NF.A.1 ✦ 4.NF.1 Explain why a fraction a/b is equivalent to a fraction (n×a)/(n×b) by using visual fraction models, with attention to how the number and size of the parts differ even though the two fractions themselves are the same size. Use this principle to recognize and generate equivalent fractions.

4.NF.B.3 A ✦ 4.NF.3 A Understand addition and subtraction of fractions as joining and separating parts referring to the same whole.

4.NF.B.3 D ✦ 4.NF.3 D Solve word problems involving addition and subtraction of fractions referring to the same whole and having like denominators, e.g., by using visual fraction models and equations to represent the problem.

5.NF.A.1 ✦ 5.NF.1 Add and subtract fractions with unlike denominators (including mixed numbers) by replacing given fractions with equivalent fractions in such a way as to produce an equivalent sum or difference of fractions with like denominators. For example, 2/3 + 5/4 = 8/12 + 15/12 = 23/12. (In general, a/b + c/d = (ad + bc)/bd.)

5.NF.A.2 ✦ 5.NF.2 Solve word problems involving addition and subtraction of fractions referring to the same whole, including cases of unlike denominators, e.g., by using visual fraction models or equations to represent the problem. Use benchmark fractions and number sense of fractions to estimate mentally and assess the reasonableness of answers. For example, recognize an incorrect result 2/5 + 1/2 = 3/7, by observing that 3/7 < 1/2.

Video aligns with the following Math TEKS standards

Math TEK 4.3C Determine if two given fractions are equivalent using a variety of methods.

Math TEK 4.3E : Represent and solve addition and subtraction of fractions with equal denominators using objects and pictorial models that build to the number line and properties of operations.

Math TEK 5.3H: Represent and solve addition and subtraction of fractions with unequal denominators referring to the same whole using objects and pictorial models and properties of operations.
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