Subtraction with regrouping

Front

What is subtraction?

Back

Subtraction is the process of taking one number away from another. It shows how many are left after some are taken away.

Tags

CCSS.2.NBT.B.7

Front

What does regrouping mean in subtraction?

Back

Regrouping in subtraction means rearranging the numbers to make it easier to subtract, especially when the top number is smaller than the bottom number in a column.

Tags

CCSS.7.NS.A.1C

Front

How do you subtract 73 - 27 using regrouping?

Back

First, regroup 73 to make it easier: 73 becomes 60 and 13. Then subtract: 60 - 20 = 40 and 13 - 7 = 6. So, 73 - 27 = 46.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the answer to 647 - 415?

Back

The answer is 232.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

If Beth had 34 bouncy balls left after giving away some, how can we find out how many she had to start with?

Back

We can add the number of balls she gave away to the number she has left. If she has 34 left and gave away 28, she started with 34 + 28 = 62 bouncy balls.

Tags

CCSS.2.OA.A.1

Front

What is the first step in solving a subtraction problem with regrouping?

Back

The first step is to check if you need to regroup. If the top number in any column is smaller than the bottom number, you need to regroup.

Tags

CCSS.5.NBT.B.7

Front

What is the term for the number you subtract from?

Back

The term is 'minuend'.

Front

What is the term for the number you subtract?

Back

The term is 'subtrahend'.

Tags

CCSS.3.OA.D.8

Front

What is the result of a subtraction problem called?

Back

The result is called the 'difference'.

Front

How do you check your subtraction answer?

Back

You can check your subtraction answer by adding the difference to the subtrahend. If it equals the minuend, your answer is correct.

Tags

CCSS.1.OA.A.1