# Math PPT Week of 12/8.

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Math PPT Week 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 * 3- Objective 4- lesson *Percent
* 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 is = % of 10
We will use the formula is = % of 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

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 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 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 \$ 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 \$ 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 proportion What 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 proportion What is the IS #? \$25 What 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 * 3- Objective 4- lesson *Percent
* 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 = *round to thousandths Change answer to a percent = 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?

Check to make sure all work has been shown and it is ready to check

Agenda 1- bell work 2- Agenda * 3- Objective 4- lesson *Percent
* 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 CR
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 * 3- Objective 4- lesson *Percent
* 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 #s 4-22 and 33-37 P #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!!!!