Adding and subtracting with regrouping

Front

What is regrouping in addition and subtraction?

Back

Regrouping is the process of rearranging groups of numbers to make addition or subtraction easier, often involving carrying over or borrowing.

Tags

CCSS.5.NBT.B.7

Front

How do you perform addition with regrouping?

Back

To perform addition with regrouping, align the numbers by place value, add each column starting from the right, and if a column sums to 10 or more, carry over the extra to the next column.

Tags

CCSS.2.NBT.B.7

Front

How do you perform subtraction with regrouping?

Back

To perform subtraction with regrouping, align the numbers by place value, subtract each column starting from the right, and if the top number is smaller than the bottom number, borrow from the next column.

Tags

CCSS.2.NBT.B.7

Front

What is the sum of 32 and 28?

Back

The sum of 32 and 28 is 60.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is the difference when subtracting 47 from 59?

Back

The difference when subtracting 47 from 59 is 12.

Tags

CCSS.7.NS.A.1C

Front

What is the result of adding 92 and 9?

Back

The result of adding 92 and 9 is 101.

Front

What is the sum of 64 and 29?

Back

The sum of 64 and 29 is 93.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is the difference when subtracting 52 from 86?

Back

The difference when subtracting 52 from 86 is 34.

Tags

CCSS.7.NS.A.1C

Front

Why is it important to line up numbers by place value when adding or subtracting?

Back

Lining up numbers by place value ensures that each digit is correctly added or subtracted according to its value, preventing errors.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What does it mean to carry over in addition?

Back

Carrying over in addition means transferring a value of 10 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