On this interactive website students practice various math skills using a real life scenario at a hamburger restaurant. Those skills include adding two-digit numbers and three-digit numbers.

Have you ever wanted to take a short cut? How about when doing your math homework? In this experiment you can learn how estimation can save you time doing math calculations. But beware, some estimations are better than others. Can you...

AAA Math's interactive tutorials and lessons assist students grades K-8 improve their understanding of a wide range of arithmetic topics. Students are provided with immediate feedback as they complete the "Learn," "Practice," and "Play"...

Find "oceans of data" for students of all ages. NCTM, California, and Philadelphia standards are listed for each grade level along with lesson plans and other website resources.

An online game where students practice their estimation skills by estimating the answer to division problems.

Sixth graders are presented with a completed multiplication equation and are asked to use it to find the answers to seven other equations. To do this, they must use their reasoning and estimation skills. Aligns with 6.NS.B.3.

Estimate the product by rounding to the nearest ten before multiplying.

This site from the University of Minnesota explains the concept of Newton's Method and offers the formula for finding the next approximation of the root from a first guess. The site has an interactive applet showing the second and third...

Help Pet and Cat fill the bathtub with water by picking a container and pouring water into the tub. You will have to estimate how many containers it will take to fill the tub with water and then see if you are correct.