##### Across

**3.**The process of comparing an object's size or quantity to a standard unit.**5.**A repeated sequence of shapes, numbers, or colors.**8.**A number that represents a part of a whole or a part of a group.**9.**The process of adding a number repeatedly to itself or another number.**11.**The amount of space inside a shape or a surface.**13.**A shape with four equal sides and four right angles.**15.**A number that includes a decimal point to represent a part of a whole.**16.**The branch of mathematics that deals with shapes, sizes, and properties of objects.**17.**A balance or similarity of shape, size, or arrangement on opposite sides of a dividing line.

##### Down

**1.**Taking one number away from another to find the difference.**2.**A mathematical sentence that shows that two expressions are equal.**4.**Sharing or dividing a number into equal parts to find out how many are in each part.**6.**Combining two or more numbers to find the total or sum.**7.**The likelihood or chance of an event happening.**10.**A shape with three sides and three angles.**12.**The space between two lines or rays that meet at a common point.**14.**The distance around the outside of a shape or a figure.