adding and subtracting two digit numbers

Front

What is addition?

Back

Addition is the process of finding the total or sum by combining two or more numbers.

Tags

CCSS.1.OA.A.1

Front

What is subtraction?

Back

Subtraction is the process of taking one number away from another.

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CCSS.2.NBT.B.7

Front

What is a two-digit number?

Back

A two-digit number is a number that has two places, such as 10 to 99.

Tags

CCSS.1.NBT.A.1

Front

What does the '+' symbol mean?

Back

The '+' symbol means to add numbers together.

Tags

CCSS.1.OA.A.1

Front

What does the '-' symbol mean?

Back

The '-' symbol means to subtract one number from another.

Tags

CCSS.7.NS.A.1C

Front

What is the sum of 10 and 11?

Back

The sum of 10 and 11 is 21.

Tags

CCSS.1.OA.A.1

Front

What is the difference between 22 and 11?

Back

The difference between 22 and 11 is 11.

Tags

CCSS.2.OA.A.1

Front

If you add 10 to 10, what do you get?

Back

If you add 10 to 10, you get 20.

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

Front

What is 97 minus 10?

Back

97 minus 10 is 87.

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CCSS.1.NBT.C.5

Front

What is 21 plus 0?

Back

21 plus 0 is 21.

Tags

CCSS.1.OA.B.3