Part I: Finding the Percent of a Given Number To find the percent of a given number, change the percent to a decimal and MULTIPLY. Example: 30% of 400 Step % = .30 Step 2: 400 x .30 12000 Step 3: Count the digits behind the decimal in the problem and add decimal to the answer. 120.00 120 Part II: Finding the Percentage of a Number To find what percentage one number is of another, divide the first number by the second, then convert the decimal answer to a percentage. Example: What percentage is 12 of 25? Step 1: 12/25 = .48 Step 2: .48 = 48% (12 is 48% of 25) Part : Finding Percentage Increase or Decrease To find a percentage increase or decrease, first find the percent change, then add or subtract the change to the original number. Example: Kindles have dropped in price 18% from $139. What is the new price of a Kindle? Step 1: $139 x .18 = $25 Step 2: $139 - $25 = $114 Part IV: Finding a Value To find a total value, given a percentage of the value, DIVIDE the given number by the given percentage. Example: If taxes on a new car are 8% and the taxes add up to $1600, how much is the new car? Step 1: 8% = .08 Step 2: $1600 / .08 = $160,000 / 8 = $20,000 (Remember when the divisor has a decimal, move it to the end to make it a whole number and move the decimal in the dividend the same number of places. .08 becomes 8, 1600 becomes 160000.) Part V: Calculating percent change Percentage change is calculated this way:
The sign indicates whether it is a decrease or increase. Example: Staff hours for 2006 were 28011 and for 2007 were 31230. How do I find the percentage of increase? this is a positive figure, it is an 11.5% increase. Practice: Remember to show all your work, include units if given, and NO CALCULATORS! All work and answers go on your answer sheet. What is 45% of 900? Thirteen percent of a 12,000 acre forest is being logged. How many acres will be logged? A water heater tank holds 280 gallons. Two percent of the water is lost as steam. How many gallons remain to be used? What percentage is 25 of 162.5? 35 is what percentage of 2800? 14,000 acres of a 40,000 acre forest burned in a forest fire. What percentage of the forest was damaged? You have driven the first 150 miles of a 2000 mile trip. What percentage of the trip have you traveled? Home prices have dropped 5% in the past three years. An average home in Indianapolis three years ago was $130,000. What’s the average home price now? The Greenland Ice Sheet contains 2,850,000 cubic kilometers of ice. It is melting at a rate of .006% per year. How many cubic kilometers are lost each year? 235 acres, or 15%, of a forest is being logged. How large is the forest? A teenager consumes 20% of her calories each day in the form of protein. If she is getting 700 calories a day from protein, how many calories is she consuming per day? The biomass of a small oak tree increases from 3000 kilograms to 9000 kilograms in 2 years. What is the percent increase in the biomass of the tree per year? Go on to the next page! Metric Units Kilo-, and milli- are the most frequently used prefixes of the metric system. You need to be able to go from one to another without a calculator. You can remember the order of the prefixes by using the following sentence: King Henry Died By Drinking Chocolate Milk. Since the multiples and divisions of the base units are all factors of ten, you just need to move the decimal to convert from one to another.
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Enduring contribution of Inductee Enduring contribution explained well Enduring contribution stated with little explanation Enduring contribution stated but not well developed Enduring contribution stated but not developed Enduring contribution not stated 3-8 slides 3-8 relevant slides used in presentation 3-8 slides used with 1 irrelevant to presentation 3-8 slides used with 2 slides irrelevant to presentation More than 3 slides, but most are irrelevant to presentation Less than 3 slides or most slides irrelevant to presentation Student preparation 3-6 minutes Within the time allotted, demonstrates personal understanding of content, generates high interest Within time guidelines, but only generated some interest Within guidelines, but does not keep interest Short of guidelines but kept interest Presentation less than minutes, and did not keep interest * For an example, please email Mrs. Rowder and she will send one to you! Cooperative Grading Policy: Since you may choose to work with a partner and we know that sometimes one student ends up doing more than their share of the project, we will be using the cooperative grading policy. The cooperative grading policy allows points to be allocated to students according to the amount of effort each student contributes. The way the Cooperative Grading Policy is as follows: The project will be scored using the rubric out of a total of 50 points that can be earned. The points earned on the project will then be multiplied by the number of students in that group (2). Students will then discuss their contributions to the project and divide the points according to the effort put forth by each member. So, if one student puts forth more effort than another student, the student who worked harder, will earn more points (they may even exceed the 100% value!) While students will determine the initial point allocation, they must provide evidence and a constructive argument as to how they earned the points. The teacher will then determine the final distribution of points earned. The Cooperative Grading Agreement is on the next page.