Grade 1 Reason Abstractly and Quantitatively

Grade 1

by XiaoTong Deng

MP.2 Reason Abstractly and Quantitatively

(1-ESS1-2)

​What does it mean?

​Students will be able to use numbers, words, and toois to explain they understand the problem. For example, 30-8 or 30+8, students can use a number line to perform addition and subtraction by using a number line.

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​Link

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https://betterlesson.com/lesson/590725/adding-and-subtracting-multiples-of-ten

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http://www.corestandards.org/Math/Content/1/OA/

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Multiple Choice

Use the hundred chart to solve subtration.

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23+ 17=

• 39

• 40

• 25

• 30

Fill in the Blanks

Multiple Select

There are 10  bees. There are 5 butterflies. How many bugs are there in all?

• $$10+5=15\$$  

• 10-5=10

• 18