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.

Tags

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 30 and 20?

Back

The sum of 30 and 20 is 50.

Tags

CCSS.2.NBT.B.5

Front

What is 45 - 15?

Back

45 - 15 equals 30.

Tags

CCSS.2.OA.A.1

Front

If you have 50 apples and you give away 20, how many do you have left?

Back

You have 30 apples left.

Tags

CCSS.2.OA.A.1

Front

What is 22 + 8?

Back

22 + 8 equals 30.

Tags

CCSS.2.NBT.B.5

Front

What is 70 - 40?

Back

70 - 40 equals 30.

Tags

CCSS.2.NBT.B.5