Imagine needing to estimate the total cost of the items in your grocery basket to decide whether to put something back. So you round to the nearest dollar for each potential purchase, using the “round ...

Students go over using number lines to solve the four equations in a fact family. In this lesson, students go over using number lines to solve the four equations in a fact family. Julia uses charts, ...

In financial markets, when round numbers become important, it creates an event risk environment Round numbers can’t seem to hold in financial markets; either there is a decisive breakthrough or a big ...