Three Digit Subtraction

Front

What is three-digit subtraction?

Back

Three-digit subtraction involves subtracting one three-digit number from another, requiring borrowing when the top digit is smaller than the bottom digit.

Front

How do you perform subtraction with borrowing?

Back

To perform subtraction with borrowing, start from the rightmost digit. If the top digit is smaller than the bottom digit, borrow 1 from the next left digit, which increases the top digit by 10.

Front

What is the result of 500 - 168?

Back

332

Front

What is the result of 500 - 114?

Back

386

Front

What is the result of 300 - 130?

Back

170

Front

What is the result of 400 - 206?

Back

194

Front

If 309 kids signed up for a league and 238 were boys, how do you find the number of girls?

Back

Subtract the number of boys from the total number of kids: 309 - 238 = 71.

Front

What is the importance of understanding place value in subtraction?

Back

Understanding place value is crucial in subtraction as it helps in aligning numbers correctly and knowing when to borrow.

Front

What is a common mistake made in three-digit subtraction?

Back

A common mistake is failing to borrow correctly when the top digit is smaller than the bottom digit.

Front

How can you check your subtraction answer?

Back

You can check your subtraction answer by adding the result to the subtracted number; if it equals the original number, the answer is correct.