Single and Double digit vertical addition.

Front

What is vertical addition?

Back

Vertical addition is a method of adding numbers where the numbers are stacked one on top of the other, aligning the digits by place value (ones, tens, etc.).

Front

What is a single-digit number?

Back

A single-digit number is any number from 0 to 9.

Front

What is a double-digit number?

Back

A double-digit number is any number from 10 to 99.

Front

How do you add single-digit numbers?

Back

To add single-digit numbers, simply count up from one number to the other. For example, 3 + 4 = 7.

Front

How do you add double-digit numbers?

Back

To add double-digit numbers, start by adding the ones place, then the tens place, carrying over if necessary.

Front

What does 'carry over' mean in addition?

Back

'Carry over' means when the sum of a column exceeds 9, you write down the last digit and carry the first digit to the next column.

Front

What is the sum of 5 and 3?

Back

The sum of 5 and 3 is 8.

Front

What is the sum of 12 and 7?

Back

The sum of 12 and 7 is 19.

Front

What is the first step in vertical addition?

Back

The first step in vertical addition is to write the numbers one above the other, aligning them by place value.

Front

What do you do if the sum of the ones place is 10 or more?

Back

If the sum of the ones place is 10 or more, write down the last digit and carry over the first digit to the tens place.