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Evaluation algebra Video transcript Now, let's think about expressions with more than one variable. So say I had the expression a plus-- I'll do a really simple one, a plus b.

And I want to evaluate this expression when a is equal to 7 and b is equal to 2. And I encourage you to pause this and try this on your own. Well, wherever we see the a, we would just replace it with the 7. And wherever we see the b, we'd replace it with the 2.

So when a equals 7 and b equals 2, this expression will be 7 plus 2, which, of course, is equal to 9. So this expression would be equal to 9 in this circumstance.

Let's do a slightly more complicated one. Let's say we have the expression x times y minus y plus x. Actually, let's make it plus 3x. Or another way of saying it plus 3 times x. So let's evaluate this when x is equal to 3 and y is equal to 2. And once again, I encourage you to pause this video and try this on your own.

Well, everywhere we see an x, let's replace it with a 3. Every place we see a y, let's replace it with a 2. So this is going to be equal to 3 times y. And y is 2 in this case. But x is also now equal to 3. So what is this going to be equal to?

Well, this is going to be equal to 3 times 2 is 6. This 3 times 3 is 9. So it simplifies to 6 minus 2, which is 4, plus 9, which is equal to So in this case, it is equal to You are here: Home → Worksheets → Grade 6 Free Math Worksheets for Grade 6.

This is a comprehensive collection of free printable math worksheets for sixth grade, organized by topics such as multiplication, division, exponents, place value, algebraic thinking, decimals, measurement units, ratio, percent, prime factorization, GCF, LCM, fractions, integers, and geometry.

You are here: Home → Worksheets → Grade 3 Free Printable Math Worksheets for Grade 3. This is a comprehensive collection of math worksheets for grade 3, organized by topics such as addition, subtraction, mental math, regrouping, place value, multiplication, .

8th Grade Math Games. According to the Common Core Standards, 8th grade math games should focus on three critical areas: (1) formulating and reasoning about expressions and equations, including modeling an association in bivariate data with a linear equation, and solving linear equations and systems of linear equations; (2) grasping the concept of a function and using functions to describe.

Common Core Standards for Mathematics Flip Book for Grade 4 Updated Fall, This project used the work done by the Departments of Educations in Ohio, North Carolina, Georgia, engageNY.

Common Core Standards for Mathematics Flip Book for Grade 4 Updated Fall, This project used the work done by the Departments of Educations in Ohio, North Carolina, Georgia, engageNY. The best source for free math worksheets. Easier to grade, more in-depth and best of all % FREE!

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Free 6th Grade Math Worksheets