Third grade math practice or review of adding and subtraction 3 digit numbers, estimating answers, drawing clocks to the minute, input/output tables, decomposition of four digit numbers and algebraic addition and subtraction problems as well as extending basic facts to tens, hundreds and thousands with the addition of zeros. This resource is all in Spanish. Práctica o repaso de matemáticas de tercer grado de suma y resta de números de 3 dÃgitos, estimación de respuestas, dibujo de relojes al m