03:32duration 3 minutes 32 seconds

Solving a system of linear equations using…

Solving a system of linear equations using elimination with addition

This talks about why we need two equations to solve for two unknown values, and then demonstrates how to add two equations together to eliminate one varaible and solve for the other one, then find…

01:14duration 1 minute 14 seconds

Division of a decimal by a power of ten

Quick look at why and how we multiply decimals in this situation

02:14duration 2 minutes 14 seconds

Multiplication of a decimal by a power of ten

How counting zeros tells you how far to move the decimal point