2/3 Digit Addition and Subtraction

Front

What is 2-digit addition?

Back

Adding two numbers that each have two digits, like 34 + 25.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is 2-digit subtraction?

Back

Subtracting one 2-digit number from another, like 56 - 23.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is 3-digit addition?

Back

Adding two numbers that each have three digits, like 123 + 456.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is 3-digit subtraction?

Back

Subtracting one 3-digit number from another, like 789 - 234.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What do you do when you add numbers?

Back

You combine their values to find a total.

Tags

CCSS.5.NBT.B.7

Front

What do you do when you subtract numbers?

Back

You take away one number from another to find the difference.

Tags

CCSS.1.OA.A.1

Front

What is carrying in addition?

Back

When the sum of digits in a column is 10 or more, you carry over to the next column.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is borrowing in subtraction?

Back

When you need to take 1 from the next column to subtract a larger digit.

Tags

CCSS.6.NS.B.3

Front

Solve: 66 - 31 = ?

Back

35

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

Solve: 17 + 25 + 30 = ?

Back

72

Tags

CCSS.2.NBT.B.6