Early method of written addition: making jottings. Partition (split) the second number into tens and units. The 'Help' Button on the top right will explain in more detail.
More on making jottings when adding up. Use the 'Help' button on the top right to get further information on how these are done.
Here the most significant numbers (the tens) are added first and then the units are added separately. Finally, the two are added together.
This looks more like the standard method of addition. Don't forget to use the 'Help' button to gain further information.
Here we start by adding the units together and putting them in the answer. Then we add the tens and put that total below. Finally add the two up. Further explanation is found by clicking the 'Help' button.