This document outlines numbers from 1 to 20, 5 to 50, 10 to 100, 100 to 120, and 100 to 1000 in 5 sections. It appears to be a student worksheet or lesson plan from Instituto Nacional de San Rafael for 1st grade student Ana Marcela Somoza Alas, taught by Ana Esther Guardado Alvarenga in 2015, focusing on different ranges of numbers.