MATH GRADE 2

Front

2 + 9 = 9 + 2

Back

True. This shows the Commutative Property of Addition, which states that changing the order of the addends does not change the sum.

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CCSS.1.OA.B.3

Front

10 + 0 = ?

Back

10. Adding zero to any number does not change the value of that number.

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CCSS.1.OA.C.6

CCSS.2.OA.B.2

Front

If 9 + 9 = 18, then 9 + 10 = ?

Back

19. This is an example of using known sums to find new sums.

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CCSS.1.OA.B.3

Front

If 2 + 2 = 4, then 2 + 4 = ?

Back

6. This shows how to add numbers by building on known sums.

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CCSS.1.OA.B.3

Front

5 + 9 = ?

Back

14. This is a basic addition problem.

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CCSS.1.OA.C.6

CCSS.2.OA.B.2

Front

What is the Commutative Property of Addition?

Back

It states that changing the order of the numbers in an addition problem does not change the sum.

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CCSS.1.OA.B.3

Front

What is the sum of 0 and any number?

Back

The sum is the same number. For example, 0 + 5 = 5.

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CCSS.1.OA.B.3

Front

What is 7 + 3?

Back

10. This is a simple addition problem.

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CCSS.1.OA.C.6

CCSS.2.OA.B.2

Front

What is 4 + 4?

Back

8. This is another basic addition problem.

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CCSS.1.OA.C.6

CCSS.2.OA.B.2

Front

If 1 + 1 = 2, what is 1 + 2?

Back

3. This builds on the known sum.

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CCSS.1.OA.A.1