Answer: 2.132 (choice D)
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Step-by-step explanation:
The first thing we need is to convert each fraction to decimal form.
- The fraction 2/1000 converts to the decimal 0.002
- The fraction 1/10 converts to the decimal 0.1
- The fraction 3/100 converts to the decimal 0.03
Take note how the denominator tells us what place value we're working with. For example, 2/1000 means "2 out of 1000" and we're in the thousandths place value. So we place a '2' here. Grab a place value chart if needed.
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So we found that the original expression given to us converts to this
2 + 0.002 + 0.1 + 0.03
From there we can do a bit of rearranging and adding the values should be fairly straight forward at this point
2 + 0.1 + 0.03 + 0.002 = 2.132
Optionally we can write the numbers stacked vertically as I've indicated in the image below. This vertical method could help visualize the addition method quicker. The extra zeros are there for padding. I used spreadsheet software to line everything up.