3 Digit Subtraction

Front

What is 3-digit subtraction?

Back

3-digit subtraction is the process of subtracting one 3-digit number from another 3-digit number.

Tags

CCSS.3.NBT.A.2

CCSS.2.NBT.B.7

Front

What is the first step in 3-digit subtraction?

Back

The first step is to line up the numbers by their place values: hundreds, tens, and ones.

Tags

CCSS.3.NBT.A.2

CCSS.2.NBT.B.7

Front

How do you subtract in the ones place?

Back

Subtract the bottom digit from the top digit in the ones place. If the top digit is smaller, you need to borrow from the tens place.

Tags

CCSS.2.NBT.B.7

Front

What does it mean to borrow in subtraction?

Back

Borrowing means taking 1 from the next higher place value to help subtract when the top digit is smaller than the bottom digit.

Tags

CCSS.7.NS.A.1C

Front

What is the result of 456 - 123?

Back

The result is 333.

Tags

CCSS.3.NBT.A.2

CCSS.2.NBT.B.7

Front

How do you subtract in the tens place?

Back

Subtract the bottom digit from the top digit in the tens place. If you borrowed, remember to subtract 1 from the top digit.

Tags

CCSS.2.NBT.B.7

Front

What is the result of 789 - 456?

Back

The result is 333.

Tags

CCSS.3.NBT.A.2

CCSS.2.NBT.B.7

Front

What is the importance of place value in subtraction?

Back

Place value helps us understand which digits to subtract from each other based on their position (hundreds, tens, ones).

Tags

CCSS.2.NBT.B.7

Front

What is regrouping in subtraction?

Back

Regrouping is another term for borrowing, where you adjust the numbers to make subtraction easier.

Tags

CCSS.2.NBT.B.5

Front

What is the result of 600 - 275?

Back

The result is 325.

Tags

CCSS.3.NBT.A.2

CCSS.2.NBT.B.7