All GED Math Resources
Example Questions
Example Question #11 : Decimal And Fraction Conversions
Rewrite as a decimal expression.
Divide 7 by 5, adding a decimal point and zeroes to the former as needed. The division looks like this:
The quotient, 1.4, is the decimal equivalent of .
Example Question #12 : Decimal And Fraction Conversions
Convert the following decimal to a fraction:
Convert the following decimal to a fraction:
To convert this to a fraction, let's begin by changing the decimal to a percent and putting it over 100.
Now, we just need to simplify our fraction. We can do so by dividing out two two's from the top and bottom.
So, our answer is:
Example Question #12 : Decimal And Fraction Conversions
A painting that originally costs goes on sale for off. After a week, the painting did not sell, so the price was decreased by a further . The painting finally sold. In dollars, what was the final sale price of the painting?
Start by finding how much the painting cost after it was put on sale at off.
Now, we will need to take off this already reduced price to find the final sale price of the painting.
Make sure to round to the nearest cent.
The final sale price for the painting is .
Example Question #13 : Decimal And Fraction Conversions
James deposits into a savings account. After years, his savings account has in it. What is the interest rate, to the nearest hundredths place, for his account?
Recall the equation to find the amount of simple interest generated:
, where is the initial investment, is the rate, and is time in years.
Start by subtracting his balance after six years by his initial investment to get the amount of interest that was generated.
Now, we know the initial investment and the amount of time for this account, so we can now solve for the rate.
Because rate is always expressed in a percentage, multiply by to get the rate.
Example Question #15 : Decimal And Fraction Conversions
Which of the following decimals is equivalent to the fraction ?
Which of the following decimals is equivalent to the fraction ?
To solve this problem efficiently, first eliminate any unreasonable answers. We are given an improper fraction, so we know that our answer must be grater than one. With this in mind we can eliminate one of our answers.
Next, let's make this fraction a mixed number. To do so, subtract the denominator from the numerator. This will become our new numerator. Because 6 only goes into 9 once, we will put a 1 out in front.
Now, can we simplify 3 6ths? Yes we can.
Now, the fraction one-half is equivalent to 0.5 If you weren't sure on this, you can find this out by dividing 1 by 2:
So, our answer is
Example Question #16 : Decimal And Fraction Conversions
Convert this decimal into a fraction:
There are two ways you can go about solving this. If you have a calculator, you can simply take the fraction answers and figure out which one matches the decimal we need to convert.
If you don't have a calculator, then we will work with the decimal and convert it into a fraction.
There are many different fractions can be, but for this problem we will use the easiest one.
We can assume that this is out of , with our on the top and our on the bottom.
It doesn't look exactly right though, and none of our answers are like that. So let's make become by moving its decimal place two back. We need to do the same for , whose decimal place would be right behind the number.
We now moved our decimal place two back to create . This is our right answer as if you put this fraction into your calculator you will get , but also that out of is the same as saying out of .
Our answer is .
Example Question #13 : Decimal And Fraction Conversions
Which of the following represents the equivalent of ?
None of the other answers is correct.
You can convert to the fraction:
After you do this, you then need to simplify. You can divide out of numerator and denominator the value , giving you:
Example Question #14 : Decimal And Fraction Conversions
Which of the following is equivalent to ?
You can begin by converting into the fraction:
Now, you can begin canceling from the numerator and the denominator. You are looking for factors of . The denominator is only made up of and factors (because it is a power of ). The denominator is really merely: . This means that it has a total of four s. That is the same as . Does the numerator have this many twos? You can try to figure that out by dividing it by . It does! This gets you the value . Therefore, you will have:
, or
Example Question #1 : Exponents
Solve:
Example Question #2 : Exponents
Write the following expression in expanded form:
An exponent indicates the amount of times a number (or variable) should be multiplied by itself. For example, .
In this instance, .