Lesson Description: Reading, Writing, and Representing Large Numbers (5.NBT.1) This Grade 5 math lesson supports students in reading, writing, and representing whole numbers through the hundred millions, with a strong emphasis on understanding place value patterns. Aligned to Common Core Standard 5.NBT.1, the lesson builds conceptual number sense by helping students connect large numbers to real-world contexts and multiple representations. The lesson opens with a 5-minute subtraction fluency