Subtracting double digits with regrouping

Front

What is regrouping in subtraction?

Back

Regrouping is when you rearrange numbers to make subtraction easier, especially when the top number is smaller than the bottom number in a column.

Front

What does it mean to subtract?

Back

Subtracting means taking one number away from another.

Front

What is the result of 43 - 19?

Back

24

Front

What is the result of 24 - 16?

Back

8

Front

What is the result of 47 - 13?

Back

34

Front

What is the result of 71 - 45?

Back

26

Front

What is the result of 36 - 18?

Back

18

Front

When do we need to regroup?

Back

We need to regroup when the top number in a column is smaller than the bottom number.

Front

What is a double-digit number?

Back

A double-digit number is a number that has two digits, like 10 to 99.

Front

What is the first step in subtracting double digits?

Back

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