Basic Arithmetic : Percents and Decimals

Study concepts, example questions & explanations for Basic Arithmetic

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Example Questions

Example Question #1 : Solving Linear Equations With Part, Percent, And Whole

When an unknown number is increased by , it becomes the number . What is the unknown number?

Possible Answers:

Correct answer:

Explanation:

First, convert the percent into a decimal.

Now, increasing an unknown number by  can be written by the following expression:

Next, set that equal to 88, since that is what the question tells us to do.

Now solve.

Example Question #4 : Solving Linear Equations With Part, Percent, And Whole

 of an unknown number is . What is the unknown number?

Possible Answers:

Correct answer:

Explanation:

Before we can write an equation, we need to turn the percent into a decimal.

Now, we can write the following equation:

Divide both sides by .

Example Question #5 : Solving Linear Equations With Part, Percent, And Whole

If  of an unknown number is , what is the unknown number?

Possible Answers:

Correct answer:

Explanation:

First, let  stand for the unknown number.

Then, let's convert the percentage  into an equivalent decimal  

Translating the question above into an equation, we have:

Dividing both sides by , we see that .

 

Example Question #2 : Solving Linear Equations With Part, Percent, And Whole

If  of a number  is , what is the value of ?

Possible Answers:

Correct answer:

Explanation:

First, let's convert the percentage  into its equivalent decimal .

Then, translate the above question into an equation:

Dividing by :

Example Question #1 : Changing A Decimal To A Percent

Convert  to a percent.

Possible Answers:

Correct answer:

Explanation:

To convert a decimal into percent, multiply the decimal by 100 and then add a "%" sign.

Add a % sign.

Example Question #2 : Changing A Decimal To A Percent

What is  as a percent?

Possible Answers:

Correct answer:

Explanation:

To change a demical to a percent, multiply the decimal by 100 and then add the percent sign.

Add the percent sign.

 

Example Question #2 : Changing A Decimal To A Percent

What is  as a percent?

Possible Answers:

Correct answer:

Explanation:

To change a decimal into a percent, start by multiplying the decimal by 100.

Then, add a percent sign to the end of that number.

Example Question #3 : Changing A Decimal To A Percent

What is  as a percent?

Possible Answers:

Correct answer:

Explanation:

To change a decimal into a percent, start by multiplying the decimal by 100.

Then add a percent sign to the end of the number.

Example Question #5 : Changing View

What is  as a percent?

Possible Answers:

Correct answer:

Explanation:

To change a decimal into a percent, multiply the decimal by 100 then add the percent sign.

Example Question #6 : Changing View

Change  into a percent.

Possible Answers:

Correct answer:

Explanation:

To change a decimal into a percent, multiply the decimal by  then add a percent sign at the end of that number.

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