If you're seeing this message, it means we're having trouble loading external resources on our website.

Se você está atrás de um filtro da Web, certifique-se que os domínios *.kastatic.org e *.kasandbox.org estão desbloqueados.

Conteúdo principal

Common Core Math

Grade 1

Looking for Math content that aligns with your state standards? Select your grade or subject matter to find Khan Academy math exercises and videos from our library of free content.