MM Pre/Post Subtract with Regroup and Zero

Front

What is regrouping in subtraction?

Back

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

Front

What does it mean to subtract with zero?

Back

Subtracting with zero means that when you subtract a number from another number, if the number being subtracted is zero, the result is the same as the original number.

Front

What is the result of 863 - 805?

Back

58

Front

What is the result of 991 - 293?

Back

698

Front

What is the result of 824 - 195?

Back

629

Front

What is the result of 360 - 254?

Back

106

Front

What is the result of 540 - 168?

Back

372

Front

How do you check your subtraction answer?

Back

You can check your subtraction answer by adding the result to the number you subtracted to see if you get back to the original number.

Front

What is the first step in subtracting two numbers?

Back

The first step is to line up the numbers by their place values (ones, tens, hundreds) before subtracting.

Front

What do you do if the top number is smaller than the bottom number in a column?

Back

You regroup from the next column to borrow a value, making the top number larger so you can subtract.