Lizzy: Jesse is playing with a pile of building blocks. He first builds a building with 80 building blocks. Then he builds a farmhouse with 123 building blocks. He adds a fenced-in area next to the farm made of 57 building blocks. If Jesse has 84 building blocks left, how many building blocks did he start with?.
Me: Hmmm, let me think. I think this is the detailed solution:
Jesse built three structures out of building blocks, 80 + 123 + 57 = 260 building blocks. Jesse started with 260 + 84 leftover building blocks = 344 building blocks that Jesse had originally. Final answer: 344.