The way I solve addition problems is using Base 10 Blocks. A lot of people use this strategy but I think this is the most helpful other than the standard strategy. The equation I chose to answer was 49+64. First I started drawing 49, so I drew 4 of the 10 blocks and 9 of the ones blocks. That equals 49. Now i’m gonna do 69, so I put 6 of the 10 blocks and 4 of the ones blocks. That equals 64. Next, I add them together and it equals 113. If you need to check if 113 was the right answer, you can do 113-64 which equals 49. And you can do the same with 49, like 113-49=64. Then that means that your answer is correct.
I enjoy using this strategy and I think it is the 2nd fastest way of solving addition problems.