Today, we will be doing word problems with Professor Barble. We'll meet him in a little while. Then we will be adding two-digit numbers. I wanna warm up my math brain with my friend, Professor Barble.

Now, he solves for an unknown in any position. This video addresses Common Core Grade 2 Standard Operations & Algebraic Thinking: Represent and solve problems involving addition and subtraction.

Math can be tricky sometimes ... Then, if we get a two-digit answer we'd repeat the process. So, 1+1=2 and 1+2=3. If the problem you're doing is an addition problem, then add those two numbers ...

Want to help your first-grader master math ... any two-digit number up to 100. Use concrete models or drawings to show the place values and explain the thinking involved. Understand addition ...