GED Math : GED Math

Study concepts, example questions & explanations for GED Math

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Example Questions

Example Question #12 : Units And Unit Conversions

Express  feet in inches.

Possible Answers:

72 inches

76 inches

82 inches

78 inches

Correct answer:

78 inches

Explanation:

One foot is equivalent to 12 inches, so multiply the number of feet by 12 inches per foot in order to convert:

Rewrite the numbers as improper fractions:

Cross-cancel, then multiply across:

Example Question #13 : Units And Unit Conversions

Convert 6 feet to inches.

Possible Answers:

Correct answer:

Explanation:

There are 12 inches in a foot.  Set up the dimensional analysis to solve.

The answer is:  

Example Question #14 : Units And Unit Conversions

Convert 10 inches to yards.

Possible Answers:

Correct answer:

Explanation:

One yard is equal to 3 feet.

One foot is equal to 12 inches.

Set up the dimensional analysis.

Reduce the fraction.

The answer is:  

Example Question #15 : Units And Unit Conversions

Convert 10 yards to inches.

Possible Answers:

Correct answer:

Explanation:

There are 3 feet in a yard, and 12 inches to a foot.

Write the dimensional analysis.

The answer is:  

Example Question #145 : Numbers And Operations

Convert  yards  feet  inches into inches.

Possible Answers:

Correct answer:

Explanation:

Start by converting the  yards into inches. Recall that there are  feet in a yard, and  inches in a foot.

Next, convert  feet into inches.

Now add up all the inches.

 

Example Question #146 : Numbers And Operations

Convert  hours  minutes and  seconds into seconds.

Possible Answers:

Correct answer:

Explanation:

Start by converting the  hours into seconds. Recall that there are  minutes in an hour and  seconds in a minute. 

Thus, there are  seconds in  hours.

Next, convert the  minutes into seconds.

There are  seconds in  minutes.

Now, add together all of the seconds.

Example Question #11 : Units And Unit Conversions

You have 34oz of ground beef which you plan on making into hambrugers to grill with your friends. One of your friends is from Europe, and she is used to the metric system. She claims that burgers made with a  of beef are the best. If you decide to make burgers of this size, how many can you make? Round to the nearest whole burger.

Note: 

 

Possible Answers:

Correct answer:

Explanation:

You have 34oz of ground beef which you plan on making into hambrugers to grill with your friends. One of your friends is from Europe, and she is used to the metric system. She claims that burgers made with a  of beef are the best. If you decide to make burgers of this size, how many can you make? Round to the nearest whole burger.

Note: 

 

Let's begin by running through what we need to do. 

1) Convert 34 oz to pounds

2) Convert the answer to 2) to kilograms

3) Divide the answer to 3) by 

 

Okay, to find the number of pounds we have, do the following:

1) 

So, we have 2.125lbs of ground beef

 

2)  Let's find what 2.125lbs is in kg

So, we have 0.966kg of beef.

3) Finally, let's see how many burgers we can make.

Now, we need to round to the nearest burger, so we can make about 4 burgers.

Example Question #16 : Units And Unit Conversions

If you need 256 inches of cloth, and the store from which you want to buy it only sells it in two-foot increments, how much will you have to buy?

Possible Answers:

Correct answer:

Explanation:

One foot is equal to 12 inches, so divide 256 inches by the conversion factor 12 inches/foot to obtain the equivalent in feet:

.

The next highest even number of feet is 22 feet, the correct choice.

Example Question #142 : Numbers And Operations

A high school student runs one fourth of a mile in two minutes and thirty seconds. What is his average speed in miles per hour?

Possible Answers:

Correct answer:

Explanation:

Use division to rewrite the runner's speed in terms of miles per minute. One fourth of a mile run in two minutes and thirty seconds can be restated as 

 miles per minute.

Divide the fractions by first rewriting the latter as an improper fraction:

Rewrite as a product of fractions by taking the reciprocal of the latter number:

Cross-cancel, then multiply across:

 miles per minute.

Since 60 minutes make one hour, multiply by 60 minutes per hour:

Put the 60 over 1, cross-cancel, and multiply across:

The runner's speed is 6 miles per hour. 

 

Example Question #21 : Units And Unit Conversions

Convert  hours,  minutes, and  seconds into seconds.

Possible Answers:

Correct answer:

Explanation:

Start by converting  hours into seconds.

Next, convert  minutes into seconds.

Now, add these seconds together along with the  seconds given in the question.

 

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