factor pair of a whole number
A set of points that are arranged in a straight way and extend infinitely in opposite directions.
line of symmetry
multiple of a number
The top part of a fraction that tells how many of the equal parts are being described.
A location along a line or in space.
A formal way to say which number a given number is closer to. For example, for 182, the number 180 is the closest multiple of ten and 200 is the closest multiple of a hundred. We can round 182 to 180 (if rounding to the nearest ten) or 200 (if rounding to the nearest hundred).
segment or line segment
A part of a line with two endpoints.