3rd Grade Math 1.4, Mental Math Strategies for Addition

First published at 12:03 UTC on April 12th, 2019.

An explanation of the methods we can use to do mental math to find sums. We can count by tens and ones, use compatible or friendly numbers, or start with the largest place value. Mental math is different than doing math with paper and pencil. We l...

SensitivityNormal - Content that is suitable for ages 13+