Curated OER
How Do You Add Whole Numbers?
Adding whole numbers can be tricky if you don't get all your numbers in alignment. So make sure to get the place value correct.
Curated OER
How Do You Solve a Problem Using an Angle of Elevation?
One given angle and one given length equals an unknown height. What? Here's a word problem that can be solved given two pieces of information by using the correct formula. Watch the instructor explain how to use the tangent ratio formula...
Curated OER
How Do You Use a Proportion to Find a Whole?
An explanation of the percent proportion formula. Identify the variables. Plug in the known values. Cross multiply. Use division property of equality to solve. A step-by-step example.
Curated OER
How Do You Solve a Two-Step Equation with Fractions Using Reverse Order of Operations and Reciprocals?
In order to solve any equation, one must isolate the variable. The teacher demonstrates how to solve this multi-step equation first by using the addition property of equality and then multiplying by the reciprocal of the fraction...
Curated OER
How Do You Add and Subtract a Bunch of Numbers with Different Signs?
So you have an expression of positive and negative numbers and you want to add and subtract them. Do you do the operations in order that they are written? Do you combine some? Do you move them around? Do you change their signs? The...