Addition and Subtraction with regrouping

Front

What is regrouping in addition?

Back

Regrouping in addition is the process of carrying over a value from one column to the next when the sum of a column exceeds 9.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is regrouping in subtraction?

Back

Regrouping in subtraction is the process of borrowing from the next column when the top number is smaller than the bottom number in a column.

Tags

CCSS.7.NS.A.1C

Front

How do you add two-digit numbers without regrouping?

Back

To add two-digit numbers without regrouping, simply add the digits in each column separately, ensuring that the sum of each column is less than 10.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is the sum of 47 and 75?

Back

The sum of 47 and 75 is 122.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the sum of 83 and 29?

Back

The sum of 83 and 29 is 112.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is the sum of 77 and 32?

Back

The sum of 77 and 32 is 109.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the difference when subtracting 17 from 42?

Back

The difference when subtracting 17 from 42 is 25.

Tags

CCSS.2.OA.A.1

Front

What is the difference when subtracting 29 from 56?

Back

The difference when subtracting 29 from 56 is 27.

Tags

CCSS.7.NS.A.1C

Front

What is the first step in adding two-digit numbers with regrouping?

Back

The first step is to add the digits in the ones place. If the sum is 10 or more, regroup by carrying over to the tens place.

Tags

CCSS.2.NBT.B.6

Front

What is the first step in subtracting two-digit numbers with regrouping?

Back

The first step is to check if you need to borrow from the next column. If the top digit is smaller than the bottom digit, you must regroup.

Tags

CCSS.7.NS.A.1C