3 Digit Subtraction

Front

What is 3-digit subtraction?

Back

3-digit subtraction is the process of subtracting a number that has three digits from another number that also has three digits.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

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.2.NBT.B.7

CCSS.3.NBT.A.2

Front

How do you subtract in the ones place?

Back

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

Tags

CCSS.5.NBT.B.7

Front

What does it mean to borrow in subtraction?

Back

Borrowing means taking 1 from the next left place value to help subtract a smaller number from a larger number.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the result of 456 - 123?

Back

The result is 333.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

How do you subtract in the tens place?

Back

Subtract the tens digits after borrowing if necessary, just like in the ones place.

Tags

CCSS.2.NBT.B.7

Front

What is the result of 789 - 456?

Back

The result is 333.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

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 500 - 275?

Back

The result is 225.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What do you do if you can't subtract in the hundreds place?

Back

If you can't subtract in the hundreds place, you may need to borrow from the thousands place if applicable.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2