Earsula has 1980 plants in her garden. she growed 400 tomatoes. after a few years,900 of the plants died. how many does she have left?

Hello!

To start solving this problem, identify the beginning total number of plants in the garden. Since you know she starts with 1980 plants, you can work from that bases amount to find the answer to the problem.

Next, add the amount of tomato plants that were grown.
This looks like:
1980 + 400 = 2380

So, after the tomatoes were grown, there were a total of 2,380 plants in the garden. Since some of the plants died, we need to subtract from that total to find the total number of plants left after a few years.
Make an expression to show the 900 plants that died.
This leaves you with:
2380 - 900

Subtract to find the total number of plants.
Your final answer is:
1,418 plants left in the garden

I hope this helps! :)