Double Digit Addition and Subtraction

Front

What is double digit addition?

Back

Double digit addition is the process of adding two numbers that each have two digits, such as 25 + 34.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is double digit subtraction?

Back

Double digit subtraction is the process of subtracting one two-digit number from another, like 57 - 23.

Tags

CCSS.7.NS.A.1C

Front

How do you add two-digit numbers?

Back

To add two-digit numbers, start from the rightmost digit, add the units, then add the tens, carrying over if needed.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

How do you subtract two-digit numbers?

Back

To subtract two-digit numbers, start from the rightmost digit, subtract the units, then subtract the tens, borrowing if needed.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the sum of 25 and 32?

Back

57

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is the sum of 17 and 24?

Back

41

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is the sum of 25 and 36?

Back

61

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

If Desmond's farm grew 43 pumpkins and Darrius's farm grew 12, how many pumpkins did they grow together?

Back

55

Tags

CCSS.2.OA.A.1

Front

What is carrying in addition?

Back

Carrying is when the sum of the digits in a column exceeds 9, and you move 1 to the next column.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is borrowing in subtraction?

Back

Borrowing is when you take 1 from the next column to help subtract when the top digit is smaller than the bottom digit.

Tags

CCSS.7.NS.A.1C