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Addition & subtraction strategies to solve two-digit equations using an open number line. In this lesson, students go over using different addition and subtraction strategies to solve two-digit ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Kids who visualize numbers as an evenly spaced line are better at remembering the digits than ...

When you estimate a number you decide approximately, or roughly, how big that number is. To estimate accurately, you need to have a good understanding of the value and order of numbers. A number line ...

Greg Duncan before delivering the keynote address at the Silicon Valley Education Foundation’s forum on early math. Credit: Lillian Mongeau, EdSource Today A study showing that early math skills are ...

Thousands of computers across the world are currently scouring the number line in a scavenger hunt for rare mathematical gems. Enthusiasts looking for larger and larger prime numbers, which are ...

What is a number line? A number line is a straight line with numbers written in order from lowest to highest. Number lines can go up to any number, such as 10, 20, or even more! They help you to see ...