Answer: What are decimals? (To start)
Decimals are basically fractions. They both play the same role. They are both a piece or a part. For example.. 0.8. That is the tenths. The 8 can be also known as 80 because 8 = 80 in the tenths in decimals. As fractions, its also known as.. 8/10. Now, lets try another example. 0.07. What's that? Its known as the hundredths. Hundredths always has a whole number or not, and a decimal point to separate the decimal it and two other digits. Now thousands, and other numbers, you'd learn that sooner. And this passage, defined decimals.
Answer 2: How do you add decimals?
Just imagine decimals are fractions. You learned how to add fractions, right? That's the same thing for decimals. Here's and example. 4.5 + 3.4. (If you have paper, I recommend you use it to stack the two decimals up and make it easier.) Now, you just add both digits. 4 + 3 = 7. And 5 + 4 + 9. What do you get? That's right! 7.9. There is seven wholes and 9 tenths. (To make things easier, make the tenths like dimes.) Now lets try no whole number. 0.5 + 0.2. 0 + 0 = 0 And 5 + 2 = 7. This decimal will be 0.7. I hope you learned from this, thanks if you read. And I hope this is helpful!