2nd Grade Math

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What is subtraction?

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Subtraction is the process of taking one number away from another. For example, in the equation 5 - 2 = 3, we take 2 away from 5.

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What is addition?

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Addition is the process of combining two or more numbers to get a total. For example, in the equation 3 + 4 = 7, we combine 3 and 4 to get 7.

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CCSS.1.OA.A.1

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CCSS.2.NBT.B.5

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CCSS.1.OA.C.6

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CCSS.2.OA.A.1

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CCSS.7.NS.A.1C

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Bella has 8 dogs and 9 cats. How can we find the total number of pets she has?

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CCSS.2.OA.A.1

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What is a number sentence?

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A number sentence is a mathematical statement that shows a relationship between numbers using operations like addition or subtraction.

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CCSS.5.NBT.B.7

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What does the equal sign (=) mean?

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What is a word problem in math?

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A word problem is a math question written in words that requires you to use math to find the answer.

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CCSS.2.OA.A.1