# Change Unknown (missing addend) Story Problems in Spanish Only

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10 MB|31 pages
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These change unknown (missing addend) story problems were created to be used for differentiating with in kindergarten, first grade, and second grade classrooms (29 pages in all). I have made 2 or 3 copies of each problem to differentiate with a similar problem. (First problem includes the equation 4+?=13 and the following worksheets 11+?=34)

They are written in Spanish only. They are great for Dual Language, bilingual, and ESL classrooms. They are also available only in English or bilingual (in English and Spanish)

These could be used as a station in a math workshop, as work for guided groups, as homework, as assessments, or they could be used in a math journal.

Common Core standards:

1.OA.1- Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

1.OA.2- Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

1.OA.8- Determine the unknown whole number in an addition or subtraction equation relating three whole numbers.

1.OA.1- Usa la suma y la resta dentro de 20 para resolver problemas
matemáticos con palabras que involucran situaciones de
suma, quitar, poner juntos, separar y comparar con valores
desconocidos en todas las posiciones, por ejemplo, usando objetos,
dibujos y ecuaciones con un símbolo para el número
desconocido que representa el problema.

1.OA.2- Resuelve problemas matemáticos mediante la suma de
tres números, cuya suma es menos o igual a 20, por ejemplo,
usando objetos, dibujos y ecuaciones con un símbolo de número
desconocido para representar el problema.

1.OA.8- Determina el número entero desconocido en una
ecuación de suma o resta relacionando tres números enteros.
Por ejemplo, determina el número desconocido que convierte la
ecuación en verdadera en cada una de las ecuaciones 8 + ? =
11, 5 = _ – 3, 6 + 6 = _.
Total Pages
31 pages
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