Dolphin: I can subtract 9 from teen numbers

Front

What is subtraction?

Back

Subtraction is a mathematical operation that represents the operation of removing objects from a collection. It is the process of finding the difference between two numbers.

Front

What is the result of subtracting a number from a teen number?

Back

The result can be any number depending on the teen number and the number being subtracted. For example, subtracting 9 from 13 gives 4.

Tags

CCSS.1.OA.A.1

Front

What is a teen number?

Back

Teen numbers are the numbers from 13 to 19 inclusive.

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CCSS.2.OA.C.3

Front

How do you solve the equation 10 - ? = 6?

Back

To solve for the unknown, subtract 6 from 10. The answer is 4.

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CCSS.1.OA.D.8

Front

What is the difference between 13 and 8?

Back

The difference is 5, calculated as 13 - 8.

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CCSS.2.OA.A.1

Front

What is the difference between 14 and 8?

Back

The difference is 6, calculated as 14 - 8.

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CCSS.2.OA.A.1

Front

What number comes before 5?

Back

The number that comes before 5 is 4.

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CCSS.1.OA.C.6

Front

What number comes after 19?

Back

The number that comes after 19 is 20.

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CCSS.2.MD.B.6

Front

What is the relationship between subtraction and addition?

Back

Subtraction is the inverse operation of addition. If you add a number to the result of a subtraction, you will get back the original number.

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CCSS.2.NBT.B.5

Front

How can you check your subtraction answer?

Back

You can check your subtraction answer by adding the result to the number you subtracted. If it equals the original number, your answer is correct.

Tags

CCSS.1.OA.A.1