Term: either a number or a number multiplied by one or more variables.
Terms are separated by addition or subtraction 52xy - 9x + 36 + 7m - 82 Each green item is a separate term. There are 5 terms in this expressions Coefficient: A coefficient is the number part of a term with variables. 52xy - 9x + 7m + 82 Each red item is a separate coefficient. Remember ---> any variable with no number in front of it has a coefficient of 1 ex: 4y --> coefficient is 4 (means 4 times y) p --> coefficient is 1 (means 1 times p) IXL: P.14 Identify terms, coefficients, and monomials T.3 Identify terms and coefficients DON'T FORGET:
ORDER IS REALLY IMPORTANT FOR SUBTRACTION Clue: Flip the order when you see: "Less Than" --> 6 less than a number --> n - 6 "Subtracted From" --> a number subtracted from 5 --> 5 - n "Fewer Than" --> 10 fewer than some number --> n - 10 http://www.delmar.edu/math/MLC/Forms/Translating_Verbal_Expressions.pdf http://www.palmbeachstate.edu/documents/Prep_Math_LW/TranslatingKeyWords.pdf THESE ARE THE IXL TASKS FOR THIS TOPIC... TRY TO COMPLETE ALL 6 LEVELS! Addition and Subtraction Only:
All 4 Operations: 4. U.1 Write variable expressions 5. T.1 Write variable expressions 6. I.1 Write variable expressions From looking at your tests it seems we need some more practice finding the Least Common Multiple.
K.7 Least common multiple click here...and LOG IN with the name and password I give you today. TEST #2
Tuesday, October 4
Click each of these links to view a video showing each method of finding the LCM. Find the LCM The original method of writing out the multiples of each number and finding the smallest one they have in common. Find the LCM Our "fancy" method using prime factorization Real-World Example Take this Quiz! Let me know how you do =) Yesterday we identified all of the prime numbers under 100 using the Sieve of Eratosthenes. Click here to see an interactive version of it (and this time it goes up to 400!)
Remember... a prime number is a whole number that only has two factors: 1 and itself. A number with more than two factors is called composite The numbers 0 and 1 are neither prime nor composite. *2 is the only even prime number! All other even numbers are divisible by so are automatically composite numbers. The prime numbers between 2 and 100 are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89 and 97. Review prime and composite numbers with this activity Play the Factor Game! Today we discussed variables and expressions.
Forget what those words mean?Look them up! Variables were those letters we were using in class today. They always represent a number. Sometimes we have to solve an equation to figure them out. Sometimes we are given a value for them and can just plug it in - just like we did today. Remember - when there is no equal sign we call it an expression. Here is an example: p - (z + 4) * 2 --> if p = 20 and z = 3 20 - (3+4) * 2 (I plugged in the numbers for each variable) 20 - 7*2 (Parenthesis first) 20 - 14 (I multiplied 7 and 2) 6 For more practice 1) I assigned 2 tasks on studyladder. If you need your password...email me : [email protected] 2) Practice!! Keep trying until you get at least 10 correct 3) Quiz - try to win a million 4) Play this hockey game Enjoy...Ms. Gillen I hope you all enjoyed our first two days together! I think we are off to a great start. We already took our first chapter pre-test and discussed our goals we will be covering over the next few weeks.
--To simplify expressions using order of operations --To translate two step verbal expressions into algebraic expressions --To add, subtract, multiply, and divide integers --To find the common factors and greatest common factor of two or more numbers --To determine multiples and least common multiple of two or more numbers --To evaluate formulas for given input values (surface area, rate, and density problems). So far we started with the order of operations. Don't forget our four steps 1) Parenthesis 2) Exponents 3) Multiply or Divide (WHATEVER COMES FIRST!) 4) Add or Subtract (WHATEVER COMES FIRST) I would like you to visit these websites to practice these skills. Keep track of each website you visit by writing it down in your binder. --> Watch this brainpop video. When you finish...take the quiz. Send your results to [email protected] --> Read this tutorial to make sure you understand the idea of the order of operations. Their is a practice quiz at the end. Let me know how you do! ---> Take this test to practice the skills we did in class. Show your work in your binder under classwork. Keep doing it until you get a perfect score (10 questions) --> Play this Order of Operations Millionaire game... You can play alone or with a friend. Good Luck! Feel free to leave a comment to let me know how you did on any of the activities... -Ms Gillen |
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March 2012
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