Addition with Regrouping

Front

What is addition with regrouping?

Back

Addition with regrouping is a method used when the sum of two digits in a column exceeds 9, requiring the 'extra' value to be carried over to the next column.

Front

How do you add two-digit numbers with regrouping?

Back

To add two-digit numbers with regrouping, start from the rightmost column, add the digits, and if the sum is 10 or more, carry over the extra value to the next column.

Front

What is the sum of 27 and 56?

Back

The sum of 27 and 56 is 83.

Front

What is the sum of 494 and 313?

Back

The sum of 494 and 313 is 807.

Front

How do you round a number to the nearest hundred?

Back

To round a number to the nearest hundred, look at the tens digit. If it is 5 or more, round up; if it is 4 or less, round down.

Front

What is 1,872 rounded to the nearest hundred?

Back

1,872 rounded to the nearest hundred is 1,900.

Front

What is the sum of 564 and 283?

Back

The sum of 564 and 283 is 847.

Front

How do you round a number to the nearest ten?

Back

To round a number to the nearest ten, look at the ones digit. If it is 5 or more, round up; if it is 4 or less, round down.

Front

What is 471 rounded to the nearest ten?

Back

471 rounded to the nearest ten is 470.

Front

What is the importance of regrouping in addition?

Back

Regrouping is important in addition because it allows for accurate calculations when the sum of digits exceeds the base value (10 in base-10 arithmetic).