I had to find the square root of 78. I found the consecutive numbers it was between, my first number was 64 which means that I multiplied 8*8. My second number was 81 which means that I multiplied 9*9. Next, I found that 78 was closer to 81 . Then, I picked random numbers that were the same and multiplied them like 8.6*8.6. I found out that 8.8*8.8= 77.44 and that was closest to 78, so that means that 8.8 is the answer.
Lindsay, what number is half way between 64 and 81? You used guess and check, which worked fine. It would be a bit more difficult to guess and check if we were asked about a larger number like 187. Either way, good job. It’s sometimes tough to write about math huh?!