##### 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.