Math PPTWeek of 12/8

Monday

Math Benchmark in computer lab

Study Guide due Thursday

Tuesday : Bell Work

Find the height of the tree

Agenda

• 1- bell work• 2- Agenda *

• * vocabulary review test Friday 12/12• *Test Monday 12/15 (ratios/ proportions/

percents/ similar figures)

• 3- Objective • 4- lesson *Percent• 5- exit ticket

Lesson objective

7. RP.3 Use proportional relationships to solve multistep ratio and percent problems.

Percents Lesson 6-5

Solving percent problems

We will use the formula •

• is = %• of 10

• When writing the percent don’t use the percent sign. You can drop it because it is over 100.

• 100 will always stay the same because percents are per 100

Solving percent problems

What percent of 100 is 25?

Identify the parts of the proportion

What is the IS #?

What is the OF #?

What is the % #?

Solving percent problems

What percent of 100 is 25?

Identify the parts of the proportion

What is the IS #? 25

What is the OF #? 100

What is the % #?X it is our unknown!!

Now that you have identified the parts- set up the proportion

25 = x

100 100

Solve your proportion

Try these

What percent of 5 is 4?

5 is what percent of 9?

Solving percent problems

6 is 10% of what number?

Identify the parts of the proportion

What is the IS #?

What is the OF #?

What is the % #?

Solving percent problems

6 is 10% of what number?

Identify the parts of the proportion

What is the IS #? 6

What is the OF #? X it is our unknown!!

What is the % #?10

Now that you have identified the parts- set up the proportion

6 = 10

x 100

Solve your proportion

Try these

30 is 15% of what number?

36% of what number is 57?

Solving percent problems

What is 45% of 39?

Identify the parts of the proportion

What is the IS #?

What is the OF #?

What is the % #?

Solving percent problems

What is 45% of 39?

Identify the parts of the proportion

What is the IS #? X it is our unknown!!

What is the OF #? 39

What is the % #?45

Now that you have identified the parts- set up the proportion

x = 45

39 100

Solve your proportion

Try these

What is 155% of 50?

What is 12% of 22?

Word Problems

The sales tax on a $120 skateboard is $9.60. What is the sales tax rate?

Identify the parts of the proportion

What is the IS #?

What is the OF #?

What is the % #?

Word Problems

The sales tax on a $120 skateboard is $9.60. What is the sales tax rate?

Identify the parts of the proportion

What is the IS #? $9.60

What is the OF #? $120

What is the % #? x

Word Problems

The advertised cost of admission to a water park is $25 per student. A student paid $30 for admission and received $3.76 in change. What is the sales tax rate?

Identify the parts of the proportionWhat is the IS #? What is the OF #?What is the % #?

Word Problems

The advertised cost of admission to a water park is $25 per student. A student paid $30 for admission and received $3.76 in change. What is the sales tax rate?

Identify the parts of the proportionWhat is the IS #? $25What is the OF #? $30-$3.75 ($26.25)What is the % #? x

Exit Ticket

Partner discussion

Why is it important for us to write our units of measure?

Wednesday : Bell Work

Find the height of the racket!! This is a tricky one pay close attention!!

Agenda

• 1- bell work• 2- Agenda *

• * vocabulary review test Friday 12/12• *Test Monday 12/15 (ratios/ proportions/

percents/ similar figures)

• 3- Objective • 4- lesson *Percent• 5- exit ticket

Lesson objective

7. RP.3 Use proportional relationships to solve multistep ratio and percent problems.

Percents Lesson 6-6

Percent of change You can have either a percent of increase or a

percent of decrease

Percent of increase is the amount the number increases.

Percent of decrease is the amount the number decreases.

Finding percent of change

Subtract numbers in problems ALWAYS largest – smallest

Divide difference by the 1st amount listed in problem

Change answer to a percent

Finding percent of change

25 is decreased to 18

Subtract numbers in problems ALWAYS largest – smallest

25-18 = 7

Divide difference by the 1st amount listed in problem 7 ÷ 25 = 0.28

Change answer to a percent 0.28 is 28%

Finding percent of change

28 is increased to 96

Subtract numbers in problems ALWAYS largest – smallest

96-28 = 68

Divide difference by the 1st amount listed in problem 68 ÷ 28 = 2.428571429 *round to thousandths 2.429

Change answer to a percent 2.429 = 242.9%

Try these

72 is decreased to 45

180 is decreased to 140

55 is increased to 90

230 is increased to 250

Exit Ticket

Partner discussion

When might you see percents in real life?

Thursday : Bell Work

Have your study guide on your desk!!!! Check to make sure all work has been shown

and it is ready to check

Agenda

• 1- bell work• 2- Agenda *

• * vocabulary review test Friday 12/12• *Test Monday 12/15 (ratios/ proportions/

percents/ similar figures)

• 3- Objective • 4- lesson *Percent• 5- exit ticket

Lesson objective

7. RP.3 Use proportional relationships to solve multistep ratio and percent problems.

Need 2 Know

You have 20 minutest to complete

CT Show your work and answer the question Bonus for +5 points- What was Jonah’s grade on the

worksheet.

CR Draw the picture Write and solve your proportion (show work) Round answer to nearest whole foot

Test Review

Review time!!

Exit Ticket

• Partner discussion with your neighbor(s)

• What skills were important for this need to know? What were your strengths or weaknesses?

Friday : Bell Work

Study for you vocabulary test

You may work with a partner

You have 10 minutes

Agenda

• 1- bell work• 2- Agenda *

• * vocabulary review test TODAY!• *Test Monday 12/15 (ratios/ proportions/

percents/ similar figures)

• 3- Objective • 4- lesson *Percent• 5- exit ticket

Lesson objective

7. RP.3 Use proportional relationships to solve multistep ratio and percent problems.

After test

After you are done with the vocabulary test, you may study for the math test on Monday. Look at the following problems and make sure you are able to do them.

P. 267-268 #s 4-22 and 33-37 P. 371-372 #s 26-48

This is not a grade but problems to help you study. ****Check answers in the back of the book

TO BE DONE INDIVIDUALLY!!!!