Are your class ready to add 2-digit and 3-digit numbers? Make sure they are with this Year 3 Add 2-Digit and 3-Digit Numbers Prior Learning resource, which covers essential learning from Year 2, where children needed to use the column method to add 2-digit numbers together. This resource allows children to build a strong foundation of addition knowledge, before they move on to new learning. We have also included an answer page to make your marking as simple as possible.