1. Section 3.1
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Here is a portions web for us to complete.
Remember that to write a decimal as a percent, we multiply by 100 and add the percent symbol %. Here is how we do it.
We found that 0.875 expressed as a percent is 87.5 %. Let's include this result in our web!
Moving on, let's choose one of the forms of the number — the decimal, fraction, or a percent — to express it with words. Lets go for the fraction! Notice that we can read 78 as seven-eighths
. Let's put all of our results together for a completed portions web.
First, we want to write this percent as a decimal. To do this, we ignore the percent symbol and move the decimal point two places to the left. Let's go!
We found that 270 % expressed as a decimal is 2.70, or simply 2.7.
Now, the expression in the middle of the web reads as two and seven- tenths.
Let's write this expression using numbers. We do it by replacing each word with a corresponding number or operation.
2_(two) + 7^(seven)/10_(tenths)
Take note that this is a sum of a whole number and a fraction. In other words, it is a mixed number. This means we can ignore the plus sign and write the expression as 2 710. Finally, let's complete the web!
