Hey students! Just wanted to do a short post with a few pointers for the integers homework! Remember when you are subtracting a negative, you have to take the opposite of it!
Ex: 4 - -2 ***put your parentheses
4 - (-2)
opposite of -2 is +2
4 + 2 (Model it!)
++++
++ Answer: ___+6______
If you check the blog and does these problems correctly, you can get 5 extra credit points to your lowest grade! Good luck!
I hope everyone enjoyed the 3 day weekend! I know that the STAAR Practice Writing was probably pretty stressful today, but I'm proud of you guys for pushing through! Only one more day of it then we return to a regular schedule. Remember that your graphing projects are due THURSDAY by 3:35!
Because it has been so long since I've seen most of you, I wanted to give you a preview of what we are about to move into. This is your homework that is due THURSDAY by the time you come to class!
Comparing and Ordering Integers
Compare. Write <, >, or = for each □.
***Remember < means less than and > means greater than.
As promised, I made a remix to Beyonce's "Irreplacable." Because I made the video, you absolutely CANNOT make fun of how bad my voice is! Remember for the project today that you have to find the discount and tax for your item. Just a refresher on the steps of how to find the percent of a number!
Step 1- Remember "of" means MULTIPLY
Step 2- Convert your percent to a decimal (watch the video if you forgot how!)
Hopefully this helps! Remember, YOUR PROJECT IS DUE ON MONDAY! If you want to take it home over the weekend to make it pretty/awesome, you can, but when Monday gets here, you will have to have it! Have a great weekend!
Concept 2- The Percent Bar Model
This model is helpful for the visual learners. The whole idea behind the percent bar model is to be able to find the percent of some number. remember that some big benchmark percents to look for are 50%, 10%, 5%, and 1%. You can pretty much combine these to do any percent of a number!
Practice:
What is 20% of 45?
What is 33.3% of 36?
What is 85% of 60? (Hint use your knowledge of what 50%, 10% and 5% are!)
Answers to Practice to check yourself on:
9
12
51
Concept 3- The Proportions Model
This model is helpful for the people who really like straight forward multiplication and division. Use the following formula to help you remember how to set it up.
part = ?%
whole 100%
When reading the question, it is helpful to identify and label so that when you set it up, you have everything in the right place. For example:
Ashley had a box with 30 cookies. She ate 10% of them. How many cookies did she eat?
in this question, the 30 is the whole and the the 10% goes with the ?%
1. After you have identify each number is, you can set up the proportion.
x = 10%
30 100%
2. Now reduce the known ratio by simplifying. x = 1%
30 10%
3. Re-write your proportion with the known ratio first. 1% = x
10% 30
4. Find your scale factor. 1% x 3= x
10% x 3 30
5. Solve x = 3 cookies Practice:
If 8 out of 20 students in a class are boys, what percent of the class is made up of boys?
18 is 40% of what number?
What is 20% of 45?
What is 25% of 52?
What percent of 56 is 14?
Once you work through them, go check your answers HERE! Just look at the line that says "solution.
Concept 4- Discounts (Percent of Decrease)
Who doesn't like a discount?! I'm all about saving money! So think about when you go into a store and the shirt that you really want is 25% off. What a great feeling right?! Does that mean that you only pay 25% of the cost though? NOPE! If I am looking at the shirt and it is $20, I know that I'm going to be able to SUBTRACT a few dollars from that $20 price. Now let's figure out the total after the discount!
1. Identify what each number is and set up the proportion.
$20 is the WHOLE price, so it is my whole. 25% off is my ?%. x = 25%
$20 100%
2. Reduce the known ratio. x = 1%
$20 4%
3. Re-write your proportion with the known ratio first. 1% = x
4% $20
4. Find your scale factor. 1% x 5 = x
4% x 5 $20
5. Solve. x = $5 YOU AREN'T DONE THOUGH! You found out how much you get to subtract, but that doesn't tell you the TOTAL.
Whole - Discount = Total $20 - $5 = $15 Concept 5- Tax and Tip (Percent of Increase)
Except for one weekend a year, when you go to buy something at the mall, you don't get to pay the price on the tag. Your jeans may be $30, but when you get up to the register, you have to pay tax on those jeans. This means you have to pay and ADDITIONAL amount of money. If the tax rate is 10%, how much will you pay total?
1. Identify what each number is and set up the proportion.
$30 is the WHOLE price, so it is my whole. 10% tax is my ?%. x = 10%
$30 100%
2. Reduce the known ratio. x = 1%
$30 10%
3. Re-write your proportion with the known ratio first. 1% = x
10% $30
4. Find your scale factor. 1% x 3 = x
10% x 3 $30
5. Solve. x = $3 YOU AREN'T DONE THOUGH! You found out how much extra you have to pay for the tax, but that doesn't tell you the TOTAL.
Whole + Tax (or tip) = Total $30 + $3 = $33 Practice for Discount, Tax, and Tip is HERE!
If you are feeling like you need any more practice, you can go HERE and practice all of the concepts! Have a great weekend and good luck on the final!
If you looked here today and you can do this problem and show me your work, you will get 5 bonus points added to your lowest grade. Good luck!
Mr. Pratts took his kids to go shopping. When he checked out, the amount for all of their clothes was $500. He got a 10 % discount. If there is a sales tax of 8%, how much will Mr. Pratts pay total?
The time has come! The semester is almost over and you will be test free for a few weeks! The final will include the following concepts: Fraction Decimal and Percent Conversions, the Percent Bar Model, The Proportions Model, Discounts, Tax, and Tip. I know it seems like a lot, but you can do it! Below is an example of each type of problem. If you can see an area of confusion, come see me!
Fraction, Decimal, Percent Conversions
Be able to fill in a chart like this! The test will not have perfect fractions and decimals. Work on these for some practice!
Fraction
Decimal
Percent
0.4
5%
0.42
0.038
234%
2 1/4
Challenge!
0.5%
Challenge!
2 5/6 %
Percent Bar Model
Proportions Model
Discount
Tax
Tip
You will use the same steps as with tax. It is a percent of increase, so you set up the proportion the same way then add it to the original price.
