The Real and Complex Number Systems - MAP 7th Grade Math
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If a server at a restaurant gets a 
tip on a bill of 
, then what will be the amount of the tip?
If a server at a restaurant gets a
The first step to solving this problem is determining what operation we are going to use.
Think:we know that the tip is going to be 
of 
. The keyword "of" gives us a clue and indicates that we are going to multiply.
As we have learned in previous lessons, we need to convert our percentage into a decimal before we are able to multiply:
Next, we can perform the multiplication operation and find the tip:
The server's tip will be 
The first step to solving this problem is determining what operation we are going to use.
Think:we know that the tip is going to be
As we have learned in previous lessons, we need to convert our percentage into a decimal before we are able to multiply:
Next, we can perform the multiplication operation and find the tip:
The server's tip will be
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Solve:
Solve:
In order to solve this problem, we need to start at 
on the number line.
Next, we have 
which means we need to move 
places to the right on the number line. When we have an addition sign 
we move to the right because that is towards the positive side of the number line. When we have a subtraction sign 
we move to the left because that is towards the negative side of the number line.
The orange arrow moved 
places to the right, and ended at 
; thus,
In order to solve this problem, we need to start at
Next, we have
The orange arrow moved
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Does the table provided show a direct proportional relationship? If so, then identify the proportion.
Does the table provided show a direct proportional relationship? If so, then identify the proportion.
In order to determine whether or not the table shows a direct proportion, we will divide the quantities in the 
coordinate column by the quantities in the 
coordinate column. In order for the table to show direct proportion, each quotient should be the same value.
In this example, each quotient is the same value; therefore, this table does show direct proportion.
The proportion is 
In order to determine whether or not the table shows a direct proportion, we will divide the quantities in the
In this example, each quotient is the same value; therefore, this table does show direct proportion.
The proportion is
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