![]() ![]() To 30 and N is equal to 1/4 is equal to eight. You're gonna subtract three, and you're just going to be left with, you're just going toīe left with an eight. Well, threes are going to, you know positive three, then And now when we evaluate this, so that is equal to this, we have three plus eight minus three. Or 12 divided by four, which is going to be equal to three. Well what is 12 times 1/4? That's gonna be 12/4, So what is, what is 1/10, This right over here,Ġ.1, that's the same thing as 1/10 of 30? Well 1/10 of 30, that's going to be three. Times 30 plus eight minus 12 times N, where N is 1/4. So this is going to be equal to 0.1 times M. So over here I have this expression 0.1 M plus eight minus 12 N, when M is equal to 30Īnd N is equal to 1/4. And we'll, just like before, try to work through it on your own before we do it together. So this is equal to this, is equal to 6.5. 3.5 plus five is 8.5, minus two is going to be 6.5. And what is this going to be? Well, let's think about it. ![]() Way to think about it is eight divided by four is Half of 7, that's going toīe three and a half, 3.5. So what is this going to be equal to? So if I were to take, if I were to take, and I can color code this, seven times 0.5. And then we have plus five minus eight times K. This is going to be seven times, and instead of J I'm gonna put a zero, a 0.5 in there. Want to replace it with a 0.5 and everywhere we see a K we want to replace it with a 0.25, so let's do that. To evaluate this thing, everywhere we see a J we So why don't you try to pause the video and evaluate this first before Each p Subjects: Basic Operations, Math Test Prep, Order of Operations Grades: 5 th Types: Centers CCSS: 5.OA.A.1, 5.OA.A. If we can give ourselves some practice evaluating expressions that have two different variables in them So let's see if we canĮvaluate the expression seven J plus five minus eight K, when J is equal to 0.5Īnd K is equal to 0.25. In this pack, students will practice writing expressions solving and equations using the order of operationsTo use, students have to solve each problem and then locate and color the answers within the math search grid. If you don't know how to do any of these, you need to review those topics. If you need a review of that concept, go here: ģ) Operations involving Decimals and Fractions: Lastly, you need to know how to add, subtract, multiply and divide decimals and fractions. Prior section is at: Ģ) Order of Operations (PEMDAS): Once numbers have replaced the variables by using substitution, you need to know the rules for order of operations. If you won't understand that, try reviewing the prior section starting with this video and working forward to the one you found confusing. So, this video assumes you understand the basic concepts for substitution. ![]() Then, come back and try this video again.ġ) Basic Substitution: The process in the video is no different than if you substitute whole numbers or integers for the variables. I encourage you to look through them and try to isolate what is confusing you and review the appropriate topic(s). You need to understand several basic concepts to understand this video. It would be helpful if you said what you found confusing or what you didn't understand. ![]()
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