Does addition make a number bigger or smaller?

$$15-2=$$  

Jeffery has 15 markers and 7 crayons. How many more markers than crayons does Jeffery have?

Does subtraction make a number bigger or smaller?

$$12+8=$$  

Pierre has 6 boxes of legos. His mom bought 10 more boxes. How many many boxes of legos does he have in all?

Walker had 3 crayons. Faith gave him 6 more. How many crayons does Walker have now?

There were 9 peppers in the garden. 6 of them were harvested. How many peppers are left in the garden?

There are 6 trays of eggs.  If there are 10 eggs on each tray, how many eggs are there altogether?

What is asked?