1. Adding and Subtracting Mixed Measures Polynomials
Lesson 80

2. Mixed Measures Addition Line up matching units Add like units
Work right to left
29 minutes 45 seconds
+ 33 minutes 32 seconds

3. Mixed Measures Cont. Subtraction Line up matching units
Subtract like units from right to left
Regroup units using equivalences
15 pounds 2 ounces
− 7 pounds 10 ounces

4. Polynomials Monomial (one term): 5 𝑥 6 ;7; 𝑥 3 𝑦;5𝑥𝑦𝑧;𝑧
Binomial (two terms): 𝑦+3; 𝑥 2 𝑦+5𝑥;𝑥𝑦𝑧+9 𝑧 3
Trinomial (three terms): 𝑥 2 +5𝑥+6;𝑥+7𝑥𝑧+𝑧

5. Degree of Polynomials The greatest exponent in the polynomial
First degree (linear): 3x + y + 1
Second degree (quadratic): 𝑥 2 +2𝑥+4
Third degree (cubic): 3 𝑥 3 +2 𝑥 2 +𝑥 −4
Descending order: greatest exponent on the left and the least exponent on the right

6. Adding Polynomials Line up like terms Add like terms
Add the binomials x + 7 and 3x – 2