Two-Digit Subtraction with Regrouping

Front

What is two-digit subtraction with regrouping?

Back

It is a method used to subtract numbers that have two digits, where you may need to borrow from the next higher place value.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What does 'regrouping' mean in subtraction?

Back

Regrouping means rearranging the numbers to make subtraction easier, often by borrowing from the next column.

Tags

CCSS.7.NS.A.1C

Front

How do you subtract 81 - 56?

Back

First, regroup if necessary: 81 becomes 70 (borrow 1 from 8), then subtract: 70 - 50 = 20, and 1 - 6 (after borrowing) becomes 5. So, 81 - 56 = 25.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the result of 74 - 31?

Back

43

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

If Tim put 58 plates through the dishwasher and 29 needed a second wash, how many only needed to be washed once?

Back

29 plates needed to be washed only once.

Tags

CCSS.2.OA.A.1

Front

What is the answer to 83 - 65?

Back

18

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the first step in two-digit subtraction?

Back

Line up the numbers by place value (ones under ones, tens under tens).

Tags

CCSS.2.NBT.B.7

Front

What do you do if the top digit is smaller than the bottom digit in subtraction?

Back

You need to regroup by borrowing from the next column.

Tags

CCSS.7.NS.A.1C

Front

How do you check your subtraction answer?

Back

You can add the answer to the number you subtracted to see if you get the original number.

Tags

CCSS.1.OA.A.1

Front

What is the difference between 'minuend' and 'subtrahend'?

Back

The minuend is the number you are subtracting from, and the subtrahend is the number you are subtracting.

Tags

CCSS.1.OA.A.1