khan academy
Ace your homework & exams now with Quizwiz!
coordinate plane
A coordinate system formed by the intersection of a horizontal number line, called the x-axis, and a vertical number line, called the y-axis.
tape diagram
A drawing that looks like a segment of tape, used to illustrate number relationships.
Illustrations/Photographs
Help you to know exactly what something looks like
ratio
a comparison of two numbers by division
equivalent
having the same value
