Addition and Multiplication Crossword

Across
2.	The result of multiplying a set of numbers
5.	Both addition (a + b = b + a) and multiplication (a x b =b x a)are this.
8.	This mathematics tool is often used to teach addition, but is rarely used for multiplication.
10.	The result of adding a set of numbers
13.	What the numbers to be multiplied are called
17.	Any number multiplied by this number gives the same result as the number itself
18.	What the first number in a multiplication problem is called
19.	A table-like arrangement representing numbers in the form of columns and rows to help solve a multiplication problem
20.	a collection of distinct, well-defined objects or numbers forming a group

Down
1.	The whole number that is the focus of the Identity Law of Addition
3.	This action is done with both addition and multiplication.
4.	Symbols used to group math expressions in both addition and multiplication and are first to be calculated in the Order of Operations.
6.	Action you use when you do a "times" math problem
7.	Action you use when you do a "plus" math problem
9.	What the second number in a multiplication problem is called
11.	Both addition and multiplication are part of this branch of mathematics.
12.	A mathematical sentence with an equal sign
14.	What the numbers being added together are called
15.	Word problems are sometimes called ________ problems.
16.	This arithmetic tool is especially good for teaching multiplication, but can also be used to teach addition.