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Copyright © The McGraw-Hill Companies, Inc. Permission is granted to reproduce for classroom use. Vocabulary Dear Family, Today my class started the Addition chapter . I will be learning to use the addition properties to add large numbers. I will also learn how to estimate sums. Here are my vocabulary words that I will be using during my lessons. Love, p.s. Look on the back of this letter to find some quick practice tips that we can do together in the car, along with an activity and books for us to read at home. estimate: an answer that is close to the exact answer An estimate for 17 + 9 = 30 20 + 10 = 30 mental math: to order or group numbers in a way that makes them easier to add in your head 3 + 2 + 7 = 2 + (3 + 7) = 2 + 10 = 12 Commutative Property of Addition: the property that states that the order in which two numbers are added does not change the sum 4 + 5 = 9 is the same as 5 + 4 = 9 Associative Property of Addition: the property that states that the grouping of the addends does not change the sum (4 + 5) + 2 = 4 + (5 + 2) Identity Property of Addition: the property that states that if you add zero to a number, the sum is the same as the given number 12 + 0 = 12 or 0 + 12 = 12 Grade 3 • Chapter 2 Addition

Vocabulary - Mrs. Cloe's 3rd Grade Website€¦ · Today my class started the Addition chapter. I will be learning to use the addition properties to add large numbers. I will also

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Page 1: Vocabulary - Mrs. Cloe's 3rd Grade Website€¦ · Today my class started the Addition chapter. I will be learning to use the addition properties to add large numbers. I will also

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Vocabulary

Dear Family,

Today my class started the Addition chapter. I will be learning to use the

addition properties to add large numbers. I will also learn how to estimate

sums. Here are my vocabulary words that I will be using during my lessons.

Love,

p.s. Look on the back of this letter to find some quick practice tips that we can

do together in the car, along with an activity and books for us to read at home.

estimate: an answer that is close to the exact answer An estimate for 17 + 9 = 30

20 + 10 = 30

mental math: to order or group numbers in a way that makes them easier to add in your head3 + 2 + 7 = 2 + (3 + 7)

= 2 + 10

= 12

Commutative Property of Addition: the property that states that the order in which two numbers are added does not change the sum4 + 5 = 9 is the same as 5 + 4 = 9

Associative Property of Addition: the property that states that the grouping of the addends does not change the sum(4 + 5) + 2 = 4 + (5 + 2)

Identity Property of Addition: the property that states that if you add zero to a number, the sum is the same as the given number 12 + 0 = 12 or 0 + 12 = 12

Grade 3 • Chapter 2 Addition

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Page 2: Vocabulary - Mrs. Cloe's 3rd Grade Website€¦ · Today my class started the Addition chapter. I will be learning to use the addition properties to add large numbers. I will also

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cGraw

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panies, Inc. Permission is granted to reproduce for classroom

use.

• Collect different colored small items (buttons, beads) from around the house.

• Line up the items on a table. Use the items to create addition problems.

• Ask: If I add 5 blue items and 2 red items, how many items do I have altogether?

• Use the items to make 3- and 4-digit numbers. For example: Show 1,125 as 1 yellow, 1 red, 2 blue, and 5 green. Add 234 (2 red, 3 blue, and 4 green) to this number. Answer: 1,349 (1 yellow, 3 red, 4 blue, and 9 green).

At Home Activity

Travel TalkPractice basic addition facts. Add numbers on street signs, billboards, and license plates. Add the number of people in one car with the number of people in your car.

Books to Read

The Hershey’s Kisses Addition Book

By Jerry Pallotta

Alice in Pastaland

By Alexandra Wright

Grade 3 • Chapter 2 Addition

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estimación: Una respuesta que es cercana a la respuesta exacta. Una estimación para 17 + 9 = 30

20 + 10 = 30

cálculo mental: Ordenar o agrupar números de un modo que sea más fácil sumarlos mentalmente. 3 + 2 + 7 = 2 + (3 + 7)

= 2 + 10

= 12

propiedad conmutativa de la suma: La propiedad que establece que el orden en el cual se suman dos números no cambia la suma. 4 + 5 = 9 es lo mismo que 5 + 4 = 9.

propiedad asociativa de la suma: La propiedad que establece que la agrupación de los sumandos no cambia la suma. (4 + 5) + 2 = 4 + (5 + 2)

propiedad de identidad de la suma: La propiedad que establece que si se agrega cero a un número, la suma es la misma que el número dado. 12 + 0 = 12 ó 0 + 12 = 12

Estimada familia:

Hoy comenzamos en clase el capítulo La suma. Aprenderé a usar las

propiedades de la suma para sumar números grandes. También aprenderé

cómo estimar sumas. Estas son las palabras de vocabulario que usaré durante

mis lecciones.

Cariñosamente,

P.D.: En la parte de atrás de esta carta hay sugerencias prácticas que podemos

realizar juntos en el carro, así como una actividad y libros para leer en casa.

Vocabulario

Grado 3 • Chapter 2 La suma

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Page 4: Vocabulary - Mrs. Cloe's 3rd Grade Website€¦ · Today my class started the Addition chapter. I will be learning to use the addition properties to add large numbers. I will also

Para los viajesPractiquen operaciones básicas de suma. Sumen los números que ven en las calles, casas, avisos y placas de carros. Sumen el número de personas que hay en un carro con el número de personas que hay en su carro.

Copyright © The M

cGraw

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panies, Inc. Permission is granted to reproduce for classroom

use.

The Hershey’s Kisses Addition Book

de Jerry Pallotta

Alice in Pastaland de Alexandra Wright

Libros recomendados

Actividad para el hogar

• Reúnan objetos pequeños de diferentes colores (botones, cuentas) de la casa.

• Pónganlos en fila sobre una mesa, y úsenlos para crear problemas de suma.

• Pregunta: Si sumo 5 objetos azules y 2 objetos rojos, ¿cuántos objetos tengo en total?

• Usen los objetos para formar números de 3 y 4 dígitos. Ejemplo: Mostrar 1,125 como 1 amarillo, 1 rojo, 2 azules y 5 verdes. Sumar 234 (2 rojos, 3 azules y 4 verdes) a ese número. Respuesta: 1,349 (1 amarillo, 3 rojos, 4 azules y 9 verdes).

Grado 3 • Chapter 2 La suma

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