SSAT Upper Level Math : Decimals with Fractions

Study concepts, example questions & explanations for SSAT Upper Level Math

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Example Questions

Example Question #12 : How To Find The Fractional Equivalent Of A Decimal

What is  as a fraction?

Possible Answers:

Correct answer:

Explanation:

Write the decimal divided by .

Multiply the numerator and denominator by  to get rid of the decimal, then simplify.

Example Question #266 : Rational Numbers

Convert  into a fraction.

Possible Answers:

Correct answer:

Explanation:

Write the decimal divided by .

Multiply the numerator and denominator by  to get rid of the decimal, then simplify.

Example Question #1 : How To Find Decimal Fractions

Rewrite as a fraction with whole numerator and denominator in lowest terms:

Possible Answers:

None of the other responses is correct.

Correct answer:

Explanation:

Example Question #2 : How To Find Decimal Fractions

Rewrite as a fraction with whole numerator and denominator in lowest terms:

Possible Answers:

None of the other responses is correct.

Correct answer:

Explanation:

Simplify as follows:

Example Question #261 : Fractions

Simplify:

Possible Answers:

Correct answer:

Explanation:

Begin by multiplying all of your decimal fractions by :

Simplify:

Now perform the multiplication:

The easiest thing to do next is to subtract  from :

Next, convert  into the fraction :

Now, the common denominator can be :

Simplify:

Example Question #1 : How To Find Decimal Fractions

Rewrite the following fraction in simplest form: 

Possible Answers:

Correct answer:

Explanation:

In order to rewrite  in simplest form, multiply by a form of  that makes the fraction easier to reduce - in this case , :

Example Question #3 : How To Find Decimal Fractions

What is the decimal fraction of

Possible Answers:

Correct answer:

Explanation:

To find the decimal equivalent of a fraction, we just apply long division. We divide the numerator by the denominator.

So

divided by

This results in

Example Question #3 : How To Find Decimal Fractions

Convert  to a decimal to three decimal places.

Possible Answers:

Correct answer:

Explanation:

To convert any fraction to a decimal, the numerator is in the dividend and the denominator is the divisor. Then divide as you would normally. Just remember that since  can't divide into , add a decimal point after the  and however many s needed. 

 

Example Question #6 : How To Find Decimal Fractions

Convert  to a decimal. Answer to 3 decimal places. 

Possible Answers:

Correct answer:

Explanation:

See if you can reduce the fraction before converting to a decimal. They both are divisible by , so the new fraction becomes . To convert any fraction to a decimal, the numerator is in the dividend and the denominator is the divisor. Then divide as you would normally. Just remember that since  can't divide into , add a decimal point after the  and however many s needed. 

Example Question #271 : Fractions

Which of the following is the smallest?

I. 

II.

III. 

 

IV. 

V. 

Possible Answers:

IV.

V

I

II

III

Correct answer:

IV.

Explanation:

There is no other way but to analyze each answer choice. We do have a decimal choice so lets compare the decimal to all of the fractions. Choice I. is . Even if you don't see that, first divide the numerator and denominator by , then , and you will see that it's  Choice is wrongChoice II is definitely bigger than . Reason is because if you look at the numerator, if I double it, that number is . Because this value is bigger than the denominator, this means the overall fraction is bigger than  Remember, the bigger the denominator, the smaller the fraction. ( is greater than   even though  is bigger than ) The converse is the same. If apply this reasoning to both Choice III and V, only choice V can be eliminated. Choice III is hard to figure out the exact decimal value but if we didn't have a calculator, we can surely compare their values. Let's force choice IV into a fraction. The only way to compare these fractions easily is by having the same denominator. So, lets multiply  with  which gives us . So we are comparing  with . Since  is greater than  this makes choice III bigger than  and therefore makes choice IV the smallest value. 

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