Writing Equation - Day 3

Writing Equations

Important Dates:

• Progress Reports: Week of Feb 8th

• Equations Test: Friday, February 12th

• IB Project: Week of Feb. 15th

• In-Person Date: February 22nd

DON'T FORGET

You have until 11:59 pm on February 7th to turn in any missing assignments.

Yesterday we talked about...

• The parts of an Equation

• How to elminate answer choices that don't make sense

• The difference between writing and solving equations.

• Work backwards: solving the problem then doing the opposite in our equation

Let's see what you remember

Multiple Choice

True or False:

The total should be by itself on one side of the equal sign in an equation.

• True

• False

Multiple Choice

True or False:

The variable should never be by itself on one side of the equal sign

• True

• False

Multiple Choice

True or False:

6 + 126 = x

is one way to set up an equation.

• True

• False

Multiple Choice

True or False:

x + 10 = 125

is one way to set up an equation.

• True

• False

Multiple Select

Select the answer choices that you can eliminate without reading the word problem.

• 20 - x = 50

• 20 + x = 50

• 50 - x = 30

• 50 + 20 = x

Multiple Select

Select the answer choices that you can eliminate without reading the word problem.

• 986 - 845 = n

• 845 + n = 986

• 986 + 845 = n

• 986 - n = 845

Multiple Choice

Enrollment at the local middle school was 845.

Then n new students came to the school. Enrollment is now 986. How many new students came to school?

How would you solve it?

• solve with addition

• solve with subtraction

• solve with multiplication

• solve with division

Multiple Choice

Enrollment at the local middle school was 845.

Then n new students came to the school. Enrollment is now 986. How many new students came to school?

if you solve it with subtraction, what operation is in your equation?

• addition

• subtraction

• multiplication

• division

Multiple Choice

Enrollment at the local middle school was 845.

Then n new students came to the school. Enrollment is now 986. How many new students came to school?

What number represents the total?

• 845

• 986

• n

Fill in the Blanks

Enrollment at the local middle school was 845.

Then n new students came to the school. Enrollment is now 986. How many new students came to school?

Write the equation.

Working backward.

• Read the word problem

• Eliminate any answer choices that dont make sense.

• Solve it.

• What operation did you use to solve it?

• Put the inverse of the operation in your equation.

A local radio station is giving away t-shirts to listeners. On Friday, the radio station gave away 24 t-shirts and had 212 leftover.

Write an equation that tells how many shirts (t) the radio station had to begin with.

Multiple Select

Mr. Greeley is a dog groomer. It takes him 25 minutes to groom one day. Write and solve an equation Mr. Greeley can use to find the number of dogs (d) he is able to groom in 200 minutes?

Select how you would solve & the equation:

• equation:

  $25d=200$

• solve with division

• equation: $200\ \div25=d$

• solve with multiplication

• equation: $200d\ =\ 25$

Multiple Select

Parker and his family are going on a trip to see Mount Rushmore. They will travel 55 miles per hour by car. Write and solve an equation that Parker can use to find the number of hours (h) it will take to drive 660 miles.

Select how you would solve & the equation:

• equation:

   $660\ \div\ 55\ =\ h$ 

• solve with division

• equation:  $660d\ =\ 55$ 

• solve with multiplication

• equation:  $55h\ =\ 660$ 

Multiple Select

Jane went bowling last night. She paid $2.50 to rent shoes and each game bowled. If her total cost was $20.50, write and solve an equation that could be used to find the total amount Jane paid for the games.Select how you would solve & the equation:

• equation:

   $g\ +2.50=20.50$ 

• solve with subtraction

• equation:  $g-2.50=20.50$ 

• solve with addition

Poll

How do you feel after Day 3 of Writing Equations?

• Way better!

• Its starting to make sense!

• About the same honestly

• This confused me more.