Missing Number Problems

Front

What is a missing number problem?

Back

A missing number problem is a math question where you need to find a number that makes an equation true.

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CCSS.1.OA.A.1

Front

What does the symbol '-' mean in math?

Back

The '-' symbol means 'minus' or 'subtract'.

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CCSS.7.NS.A.1C

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What does the symbol '+' mean in math?

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The '+' symbol means 'plus' or 'add'.

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CCSS.5.OA.A.1

CCSS.5.OA.A.2

Front

If you have 18 and take away 7, what do you get?

Back

11

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CCSS.2.OA.A.1

Front

If you have 15 and take away 7, what do you get?

Back

8

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CCSS.2.OA.A.1

Front

What number do you add to 7 to get 14?

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7

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CCSS.1.OA.D.8

Front

What number do you add to 4 to get 10?

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6

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CCSS.1.OA.D.8

Front

If you have 9 and you add 4, what do you get?

Back

13

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CCSS.1.OA.A.1

Front

How do you find a missing number in an addition problem?

Back

You can subtract the known number from the total to find the missing number.

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CCSS.2.OA.A.1

Front

How do you find a missing number in a subtraction problem?

Back

You can add the number you took away to the result to find the missing number.

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CCSS.2.OA.A.1