In this episode we learn how to mentally add two digit numbers together using left to right addition methods.
Episode Summary Mental addition is best done using left-to-right methods rather than what is taught in school. When we perform arithmetic mentally in a right-to-left fashion, it slows us down because of the constant need to carry digits from one column to the next.
By mentally adding the left most columns first, we avoid the need to carry digits and we get a feel for how large the sum should be early on because we are adding up the digits with the most weight first.
The student should practice additional mental math problems after watching this episode first beginning with two numbers then gradually moving to three and four number addition using the mental math methods outlined in this episode.
Math Tip of the Week
