3-digit addition/subtraction with regrouping

Front

What is regrouping in addition?

Back

Regrouping in addition is when you combine numbers that are greater than 10 and carry over to the next place value. For example, in 27 + 15, you add 7 and 5 to get 12, so you write down 2 and carry over 1 to the next column.

Front

What is regrouping in subtraction?

Back

Regrouping in subtraction is when you borrow from the next place value to subtract a larger digit from a smaller digit. For example, in 52 - 27, you borrow 1 from the 5 to make the 2 a 12, allowing you to subtract 7 from 12.

Front

What is the sum of 267 and 178?

Back

The sum of 267 and 178 is 445.

Front

What is the difference when you subtract 178 from 267?

Back

The difference when you subtract 178 from 267 is 89.

Front

What is the sum of 188 and 924?

Back

The sum of 188 and 924 is 1112.

Front

What is the difference when you subtract 162 from 809?

Back

The difference when you subtract 162 from 809 is 647.

Front

What is the difference when you subtract 445 from 831?

Back

The difference when you subtract 445 from 831 is 386.

Front

What is the difference when you subtract 899 from 967?

Back

The difference when you subtract 899 from 967 is 68.

Front

What does it mean to carry over in addition?

Back

Carrying over in addition means moving a value from one column to the next when the sum exceeds 10.

Front

What does it mean to borrow in subtraction?

Back

Borrowing in subtraction means taking 1 from the next higher place value to help subtract a larger digit.