Percents and Decimals - Basic Math

Percents are numbers expressing parts of : means part of , or .

The simplest way to convert a decimal to a percentage is to move the decimal place over two places to the right. We move the decimal point to after the hundredths place because we are rewriting the decimal as a portion of . Therefore:

Now, we need to round the percentage to the nearest tenth. The number after the tenths place is a five, so we need to round up:

is therefore our final answer.

Percents are numbers expressing parts of : is the same thing as saying parts of or

The simplest way to convert a decimal to a percentage is to move the decimal place over two places to the right. We move the decimal point to after the hundredths place because we are rewriting the decimal as a portion of . Therefore:

In everyday usage, percents usually are between and . However, when a number is greater than , it's corresponding percentage is going to be greater than . The next step of this problem is to round the percentage we have to the nearest hundredth. The number in the thousandths place is , therefore, we're going to round up:

is therefore our final answer.

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

Add the percent sign.

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.

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.

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

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

First, we will need to convert to a decimal.

Now, the word "of" means we will need to multiply 0.05 by our unknown number, . Set that equation to 18, since that is what the problem tells us.

Now, divide both sides by 0.05

We can write the following equation to represet Jimmy's salary:

Because we know Jimmy sold $1920 this month, we can plug it into the above equation.

Now, convert the percent into a decimal to find how much Jimmy made this month.

To be able to write the question as an equation, we need to first convert into a decimal.

Now, we can write the following equation and solve.

First, we need to convert into a decimal.

Then, we can write the following equation using the information given in the question:

,

where is our unknown number.

Now, solve for

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.

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 .

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 .

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

Then, translate the above question into an equation:

Dividing by :

A 20% increase is equal to 120% of the original value. To figure out how much more space the building will have if expanded 20%, you must multiply the existing maximum capacity (1020) by 120%. To do this, first divide 120 by 100.

Then, multiply the result times the existing maximum capacity.

The result is your answer.

Before multiplying, it's necessary to convert 0.25% to a decimal, which is 0.0025.

Multiply this 0.0025, with 100.

The correct answer is 0.25.

This is a multi-step problem. The perimeter of a semicircle is the sum of the circumference and diameter. First, since we are given the area, we will need to find the radius.

For the area of a semicircle:

Since the area is , substitute this into A to find radius r.

Since the radius is 2, the diameter is 4.

The circumference for a semicircle is:

The perimeter is the sum of the circumference and diameter:

To start, we need to convert the percent into a decimal.

Now, we know that Lucy receives 17% of the value of the homes she sells as her commission. Her commission can then be written as the expression .

Lucy is also paid $1000 regardless of if she sells any houses or not that month. In a linear equation, this would be our y-intercept.

Putting the pieces of the salary together, we get the following equation: