Double Digit Subtraction with Regrouping #1

Front

What is double digit subtraction?

Back

Double digit subtraction is the process of subtracting numbers that have two digits, such as 51 - 18.

Front

What does regrouping mean in subtraction?

Back

Regrouping in subtraction means borrowing from the next higher place value when the top digit is smaller than the bottom digit.

Front

How do you subtract 1 from 10 in the ones place?

Back

You need to borrow 1 from the tens place, making it 0 in the tens place and adding 10 to the ones place.

Front

What is the first step in double digit subtraction?

Back

The first step is to line up the numbers by their place values.

Front

Solve: 51 - 18 = ?

Back

33

Front

Solve: 46 - 27 = ?

Back

19

Front

Solve: 35 - 27 = ?

Back

8

Front

Solve: 32 - 14 = ?

Back

18

Front

Solve: 81 - 32 = ?

Back

49

Front

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

Back

You borrow from the next column to the left.