Intro to Directions Watch the videos Then answer

Intro to Directions: • Watch the videos. • Then answer the questions on the slide that follows. • Write your answers and show your work.

What is an algebraic expression? • http: //www. virtualnerd. com/algebra-1/algebrafoundations/variables-expressions/algebraic-expressions/numericalalgebraic-expressions

Identify the algebraic expressions. 1) 2) 3) 4) 5) 5–n=2 4 k + 2 6 y + 7 d – 2 3+2=5 12 – 4 d = 4

Algebraic expressions have variables as well as numbers. 1) 2) 3) 4) 5) 5–n=2 4 k + 2 6 y + 7 d – 2 3+2=5 12 – 4 d = 4

Directions: Complete the Algebraic Expression Graphic Organizer. Write the definitions.

What is a variable? • http: //www. virtualnerd. com/algebra-1/algebrafoundations/variables-expressions/algebraic-expressions/variablesdefinition

Identify the variables. • 1) 3 • 2) X • 3) n • 4) n + k • 5) 102

The variables are highlighted in red. • 1) 3 • 2) X • 3) n • 4) n + k • 5) 102

What is a coefficient? • http: //www. virtualnerd. com/algebra-1/algebrafoundations/simplifying-expressionsexamples/coefficient-definition

Answer each question below: 1) What is the coefficient in this expression: 3 X – 2 2) What is the third coefficient in this expression: 2 x + 6 n – 4 k + 7 y 3) What is the second coefficient in this expression: 2 k + 3 y + 4 n 4) Evaluate 4 y – 6 when y = 10 5) Evaluate 2 n – 4 when n = 3

THE COEFFICIENT IS ONLY THE NUMBER. IT DOES NOT INCLUDE THE VARIABLE!!! 1) What is the coefficient in this expression: 3 X – 2 2) What is the third coefficient in this expression: 2 x + 6 n – 4 k + 7 y 3) What is the second coefficient in this expression: 2 k + 3 y + 4 n 4) Evaluate 4 y – 6 when y = 10 40 – 6 = 34 5) Evaluate 2 n – 4 when n = 3 6 – 4 = 2

What is a term? • http: //www. virtualnerd. com/algebra-1/algebrafoundations/simplifying-expressionsexamples/polynomial-term-definition

Identify the terms. 1) What is the 2 nd term in this expression: 2 x 3 + 4 y 2) What is the 3 d term in this expression: 4 x – 6 y + 3 k – 2 3) How many terms are in this expression: 4 k – 3 + 2 y 2 + 6 n – 4 n 4) How many terms are in this expression: 2 x 3 + 6 n 5) How many terms are in this expression: 4 d + 2 d + 60 n – 3 k

Identify the terms. 1) What is the 2 nd term in this expression: 2 x 3 + 4 y 2) What is the 3 d term in this expression: 4 x – 6 y + 3 k – 2 3) How many terms are in this expression: 4 k – 3 + 2 y 2 + 6 n – 4 n 5 Terms 4) How many terms are in this expression: 2 x 3 + 6 n Two terms 5) How many terms are in this expression: 4 d + 2 d + 60 n – 3 k 4 Terms

What is the order of operations? (Watch both of these videos before answering the problems. ) • http: //www. virtualnerd. com/algebra-1/algebrafoundations/simplifying-expressions/order-of-operations/order-ofoperations-definition • http: //www. virtualnerd. com/algebra-1/algebrafoundations/simplifying-expressions/order-of-operations/order-ofoperations-examples

Evaluate using the order of operations. 1) 3 + 4(2 + 2) = 2) 2 + 6(2 -1)2 = 3) 10 – 4(2) ÷ 2 = 4) 20 ÷ 4 + 2(3) = 5) 23 - 8 ÷ 2 =

Evaluate using the order of operations. 1) 3 + 4(2 + 2) = 19 2) 2 + 6(2 -1)2 = 8 3) 10 – 4(2) ÷ 2 = 6 4) 20 ÷ 4 + 2(3) = 11 5) 23 - 8 ÷ 2 = 4

How do you simplify expressions? • http: //www. virtualnerd. com/algebra-1/algebrafoundations/simplifying-expressionsexamples/like-terms-definition

Directions: Use this page to complete the graphic organizer

Simplify the following expressions by combining the like terms: 1) X + X + X = 2) D + D + K = 3) 2 n + 4 n + 2 r + 6 r = 4) 2 + 8 y – 2 y + 10 = 5) 6 + 3 + 4 k + 5 k + 2 =

Simplify the following expressions by combining the like terms: 1) X + X + X = 4 X 2) D + D + K = 3 D + 2 K 3) 2 n + 4 n + 2 r + 6 r = 6 n + 8 r 4) 2 + 8 y – 2 y + 10 = 6 y + 12 5) 6 + 3 + 4 k + 5 k + 2 = 9 k + 17

Assessment: You need your text book Complete Page 413 #1 – 6 and 415 #21 – 26 We will put these in Engrade tomorrow.