Answer:
Yasmin still has 25 paper pieces for construction. And best way is to take out the used from the available collection.
Solution:
Given, Yasmin had 43 pieces of unused construction paper.
She made 18 paper airplanes with the yellow pieces.
We have to find which is the best way to estimate the amount of construction paper she still has left to make things.
Now, the best way is to take out the used from the available collection.
Then, she had 43 pieces and she used 18 pieces from them
So, remaining pieces = available pieces – used pieces = 43 – 18 = 25 pieces.
Hence, yasmin still has 25 paper pieces for construction.