ISEE Middle Level Math : ISEE Middle Level (grades 7-8) Mathematics Achievement
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Example Questions
Example Question #41 : How To Subtract Variables
Subtract the following:
When subtracting variables, we can look at the variables like objects. So, in the problem
we can think of the variable b as brownies. So, we can write the problem like this:
We can read it like this: You see there is a plate that contains 10 brownies. You love brownies, so you eat 2 of them. How many brownies are left on the plate? There are 8 brownies left.
We can subtract variables the same way.
Example Question #141 : Operations
Subtract the following:
To subtract variables, we will look at the variables like they are objects. So, in the problem
we can think of the variable c as cookies. So, we can write it like this:
We can read it like this: There is a plate with 10 cookies on it. They smell delicious, so we decide to eat 4 cookies. How many cookies are left on the plate? There are 6 cookies left on the plate.
We can subtract variables the same way:
Example Question #1301 : Hspt Mathematics
Simplify:
Begin by distributing the subtraction through the group:
Next, change the double negative to a positive:
Example Question #141 : Operations
Add the numbers and keep the variable:
Answer:
Example Question #1 : Algebra
Add the numbers and keep the variable:
Answer:
Example Question #5 : Algebra
Simplify
Already simplified
In order to add variables the terms must be like. In order for terms to be like, the variables must be exactly alike also being raised to the same power by the exponent.
In this case the like terms are 
We add the coefficients of the like terms. The coefficient is the number in front of the first variable, in this case it is 1 for both terms because of the identity property of multiplication stating any variable, term, or number multiplied by 1 is itself.
Our last term is not like because the 
Example Question #6 : Algebra
Remember, for exponent problems, you group together different exponents and different combinations of variables as though each were a different type of variable. Therefore, you can group your problem as follows:
Now, just combine like terms:
Example Question #7 : Algebra
Simplify:
You should begin by distributing 
Now, move your like variables next to each other:
Finally, combine the like terms:
Example Question #1212 : Hspt Mathematics
Simplify:
First, group together your like variables:
The only like variables needing to be combined are the x-variables. You can do this in steps or all at once:
Example Question #8 : Algebra
Simplify:
First, move the like terms to be next to each other:
Now, combine the x-variables and the y-variables:
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All ISEE Middle Level Math Resources
