Answer:
Number sentences.
Addition-Addend-Sum.
Subtraction-Difference.
Step-by-step explanation:
1. By definition Number sentences contains number and common symbols.
2. They can be: "Addition" (which has "Addend" that form the "Sum") and "Subtraction" (whose result is known as "Difference").
3. You can see the answer of the tree map in the figure attached.
