All ACT Math Resources
Example Questions
Example Question #161 : Fractions
Simplify the following expression:
Example Question #162 : Fractions
Evaluate the following:
Start by converting 71/3 to 22/3, and 6 2/3 to 20/3. We then multiply 22/3 by the reciprocal of 20/3, 3/20, and you get 66/60. This simplifies to 11/10.
Example Question #1 : Operations And Fractions
Solve.
Remember, to divide a number by a fraction, multiply the number by the reciprocal of the fraction. In this case,
Example Question #482 : Arithmetic
Solve for x where
To solve this, subtract 1 1/2 from both sides. Convert to common denominators.
4 1/3 – 1 1/2 = 4 2/6 – 1 3/6.
In order to subtract, you'll want to "borrow" from the 4 2/6. Rewrite 4 2/6 as 3 8/6 and then subtract 1 3/6 from this. Your solution is 2 5/6. Most calculators will also do these calculations for you.
Example Question #481 : Arithmetic
Solve for :
Begin by isolating your variable:
Next, you need to find the common denominator. For the left side of your equation, it is . For the right, it is . This means that you need to rewrite as follows:
Now, simplify and combine terms:
You can further simplify the left side:
Next, multiply both sides by . This gives you:
Example Question #3 : How To Subtract Fractions
Simplify:
First, you must convert your fractions to the common denominator of :
Next, do your subtraction:
Next, you must be very careful. Notice how you must handle your subtractions in order to maintain the correct distribution of signs:
Now, carefully distribute for each group:
Next, simplify:
Factor out the common in the numerator:
There is still a common , but that does not help you get your fraction into the form found in the answers.
Example Question #1553 : Act Math
Choose the answer which best solves the equation below:
To solve this equation, you must first make sure that both fractions have a common denominator.
In this case the common denominator will be 12:
Then you perform your operation:
Example Question #2 : How To Subtract Fractions
If John has slices of an slice pizza left over, and he eats of them, what fraction of the pizza does he have left over?
To find this answer, first you need to set up your equation:
And you need to get rid of the decimal in the numerator. We can do this by multiplying each fraction by 2/2.
Then solve for your answer:
Example Question #2 : How To Subtract Fractions
What common number can you add to the numerator and denominator of to get ?
Set up an equation where you add the same unknown number (x) to both the numerator and the denominator of the original fraction, and set the equation equal to .
Cross-multiply the fractions to simplify.
Now, solve for x.
Example Question #1 : How To Add Fractions
Add the following fractions
To add fractions you first must find the lowest common denominator. For these fractions it is 60. Then you must multiply the numerator and denominator by the number such that the denominator is equal to the LCD. For example gets multiplied by 12 (on both the numerator and denominator) because 5 times 12 is 60. When you do that you get the expression
then you just add the numerators and get
2 goes into both of those numbers so you get
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