2 digit subtraction with regrouping

Front

What is regrouping in subtraction?

Back

Regrouping in subtraction is the process of borrowing from the next higher place value when the top digit is smaller than the bottom digit in a column.

Tags

CCSS.7.NS.A.1C

Front

How do you subtract two-digit numbers with regrouping?

Back

To subtract two-digit numbers with regrouping, start from the rightmost column, borrow if necessary, and then subtract each column from right to left.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the difference between 71 and 45?

Back

The difference between 71 and 45 is 26.

Tags

CCSS.7.NS.A.1C

Front

What is the difference between 74 and 57?

Back

The difference between 74 and 57 is 17.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the difference between 63 and 12?

Back

The difference between 63 and 12 is 51.

Tags

CCSS.2.OA.A.1

Front

What is the difference between 28 and 0?

Back

The difference between 28 and 0 is 28.

Tags

CCSS.2.NBT.B.5

Front

What is the difference between 36 and 0?

Back

The difference between 36 and 0 is 36.

Tags

CCSS.2.NBT.B.5

Front

When do you need to regroup in subtraction?

Back

You need to regroup in subtraction when the digit in the top number is smaller than the digit in the bottom number in any column.

Tags

CCSS.1.NBT.C.4

CCSS.2.MD.B.6

Front

What is the first step in subtracting 71 - 45?

Back

The first step is to look at the ones place: 1 - 5 requires regrouping.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

How do you perform regrouping when subtracting 71 - 45?

Back

You borrow 1 from the tens place (7 becomes 6), making the ones place 11, then subtract: 11 - 5 = 6.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2