En cada caso, decide si la afirmación es verdadera o falsa. Prepárate para explicar tu razonamiento.
Activity 1
Revisemos el proceso de una resta
Este es el trabajo de Lin para encontrar el valor de .
¿Qué error ves en el trabajo de Lin?
¿Qué le dirías o le mostrarías a Lin para que pueda ajustar su trabajo?
Activity 2
Prueba el algoritmo
Este es un algoritmo de resta que viste en una lección anterior:
Intenta usar este algoritmo para encontrar el valor de cada diferencia. Muestra tu razonamiento. Organiza tu trabajo para que los demás puedan entenderlo.
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Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. Understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.
Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.
Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.
Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.