Number concept and opperations

Number concept and opperations

Author's Instructions

Counting forward and backward. Doing addition and subtraction.

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Problemas de sumas y restas

Addition and Subtraction - Math

Resolución de problemas sencillos de sumas y restas.

Pirámides de números 2

Addition and Subtraction - Math

Cálculo mental empleando sumas y restas.

Addition

Addition and Subtraction - Math

addition sentence

Mayor que, igual y menor que.

Addition and Subtraction - Math

Coloca el símbolo correcto (mayor que y menor que).