solving onestep equations - ms. hennessymshennessymams.weebly.com/uploads/5/9/0/9/59092727/... ·...

7
Solving Equations 1 October 28, 2015 Oct 1612:40 PM ALGEBRA TERMINOLOGY DIRECTIONS: PLACE THE TERM IN THE CORRECT SECTION. Monomial Binomial Trinomial Polynomial Constant 2x + 3 7x 2 8 9x 2 + 4x 7 10 10 8y 3y 2 7y 3 9y 3 4x + 8y 2z 9 2x + 3y 2x + 3 7x 2 9y 3 3y 2 7y 3 9x 2 + 4x 7 8 8 2x + 3y 10 10 8y 10 10 8y w 2.4 4 x 5 g 2 Oct 179:18 AM EVALUATING EXPRESSIONS Variable A variable is an unknown. The value of an algebraic expression varies or changes depending on the value of the variable. What is the value of the expression 5x 2 + 3? Oct 179:23 AM Don't forget to follow order of operations when evaluating. Substitute the following x values and see how th expression changes. x = 2, x = 1, x = 10, x = 4 5x 2 +3= 5( ) 2 +3= 5x 2 +3= 5( ) 2 +3= 5x 2 +3= 5( ) 2 +3= 5x 2 +3= 5( ) 2 +3= Oct 1912:42 PM SOLVING ONESTEP EQUATIONS

Upload: others

Post on 24-Jul-2020

0 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: SOLVING ONESTEP EQUATIONS - Ms. Hennessymshennessymams.weebly.com/uploads/5/9/0/9/59092727/... · Solving Equations 5 October 28, 2015 Oct 192:18 PM 12. Solve the following equations

Solving Equations 

1

October 28, 2015

Oct 16­12:40 PM

ALGEBRA TERMINOLOGYDIRECTIONS: PLACE THE TERM IN THE CORRECT SECTION.

Monomial Binomial Trinomial Polynomial Constant2x + 3

7x28

9x2 + 4x ­ 7­10

10 ­ 8y

­3y2 ­ 7y ­ 3

­9y3

4x + 8y ­ 2z ­ 9

­2x + 3y

2x + 3

7x2

­9y3

­3y2 ­ 7y ­ 3

9x2 + 4x ­ 7

8 8

­2x + 3y­10

10 ­ 8y ­10

10 ­ 8y

w2.4

4x5g2

Oct 17­9:18 AM

EVALUATING EXPRESSIONSVariable ­ A variable is an unknown. The value of analgebraic expression varies or changes depending on the value of the variable.

What is the value of the expression 5x2 + 3?

Oct 17­9:23 AM

Don't forget to follow order of operations when evaluating. Substitute the following x values and see how th expression changes. x = 2, x = ­1,  x = 10, x = ­4

5x2 + 3 =5(  )2 + 3 =

5x2 + 3 =5(  )2 + 3 =

5x2 + 3 =5(  )2 + 3 =

5x2 + 3 =5(  )2 + 3 =

Oct 19­12:42 PM

SOLVING ONE­STEP EQUATIONS

Page 2: SOLVING ONESTEP EQUATIONS - Ms. Hennessymshennessymams.weebly.com/uploads/5/9/0/9/59092727/... · Solving Equations 5 October 28, 2015 Oct 192:18 PM 12. Solve the following equations

Solving Equations 

2

October 28, 2015

Oct 19­2:18 PM

1. Solve the following equations for x algebraically. Check each solution.

Check

Oct 19­2:18 PM

2. Solve the following equations for x algebraically. Check each solution.

Check

Oct 19­2:18 PM

3. Solve the following equations for x algebraically. Check each solution.

Check

Oct 19­2:18 PM

4. Solve the following equations for x algebraically. Check each solution.

Check

Page 3: SOLVING ONESTEP EQUATIONS - Ms. Hennessymshennessymams.weebly.com/uploads/5/9/0/9/59092727/... · Solving Equations 5 October 28, 2015 Oct 192:18 PM 12. Solve the following equations

Solving Equations 

3

October 28, 2015

Oct 19­2:18 PM

5. Solve the following equations for x algebraically. Check each solution.

Check

Oct 19­2:18 PM

6. Solve the following equations for x algebraically. Check each solution.

Check

Oct 19­2:18 PM

7. Solve the following equations for x algebraically. Check each solution.

Check

Oct 19­2:18 PM

8. Solve the following equations for x algebraically. Check each solution.

Check

Page 4: SOLVING ONESTEP EQUATIONS - Ms. Hennessymshennessymams.weebly.com/uploads/5/9/0/9/59092727/... · Solving Equations 5 October 28, 2015 Oct 192:18 PM 12. Solve the following equations

Solving Equations 

4

October 28, 2015

Oct 19­2:18 PM

9. Solve the following equations for x algebraically. Check each solution.

Check

Oct 19­2:18 PM

10. Solve the following equations for x algebraically. Check each solution.

Check

Oct 19­2:18 PM

11. Solve the following equations for x algebraically. Check each solution.

Check

Oct 27­1:28 PM

Page 5: SOLVING ONESTEP EQUATIONS - Ms. Hennessymshennessymams.weebly.com/uploads/5/9/0/9/59092727/... · Solving Equations 5 October 28, 2015 Oct 192:18 PM 12. Solve the following equations

Solving Equations 

5

October 28, 2015

Oct 19­2:18 PM

12. Solve the following equations for x algebraically. Check each solution.

Check

Oct 19­2:18 PM

13. Solve the following equations for x algebraically. Check each solution.

Check

Oct 19­2:18 PM

14. Solve the following equations for x algebraically. Check each solution.

Check

Oct 19­2:18 PM

15. Solve the following equations for x algebraically. Check each solution.

Check

Page 6: SOLVING ONESTEP EQUATIONS - Ms. Hennessymshennessymams.weebly.com/uploads/5/9/0/9/59092727/... · Solving Equations 5 October 28, 2015 Oct 192:18 PM 12. Solve the following equations

Solving Equations 

6

October 28, 2015

Oct 17­9:30 AM

Solving Algebraic EquationsHannah and Harold were asked to solve the equation x + 4 = 7.Who do you think is correct? Hannah? Harold? Both? Neither?Explain your reasoning.

Hannah 

x    +    4   =    7      ­     4      ­  4

x     =  3

Harold 

x    +    4   =    7      ­     1      ­  1x    +    3   =    6      ­     8       ­ 8x    ­     5   =   ­2      +    5      + 5

   x        =   3

Feb 4­8:16 AM

Oct 20­1:02 PM

Solving Word Problems by Writing Legends and Writing and Solving 

Algebraic Equations

We will be creating legends that will help us create equations to solve word problems. Legends include let statements that let the reading know what the unknown variable represents. 

For example: 

Let x = the number of students who went on the field trip.

Oct 20­1:02 PM

Directions: Write a legend and an equation for each word problem. Solve the equation algebraically.

Sally has 7 more dolls than Mary. Sally has 48 dolls. How many dolls does Mary have?

Page 7: SOLVING ONESTEP EQUATIONS - Ms. Hennessymshennessymams.weebly.com/uploads/5/9/0/9/59092727/... · Solving Equations 5 October 28, 2015 Oct 192:18 PM 12. Solve the following equations

Solving Equations 

7

October 28, 2015

Oct 20­1:02 PM

Directions: Write a legend and an equation for each word problem. Solve the equation algebraically.

Betsy’s bedroom is in the shape of a square. The area of her room is 225 ft2. She would like to install crown molding around the perimeter of her room. What is the length of each side?

How many feet of molding does she need to buy?

Oct 20­1:25 PM

Directions: Write a legend and an equation for each word problem. Solve the equation algebraically.

Paul took 5 skittles from his sister’s bag of skittles. She ended up with 52 skittles. How many did his sister start with?

Oct 20­1:25 PM

Matt has agreed to paint 3 houses. If he knows that he can paint    of a house in one day, how many days will it take him to paint all 3 houses? 

Directions: Write a legend and an equation for each word problem. Solve the equation algebraically.