Here are 20 addition problems over 2 worksheets aimed at helping children practice addition using the "adding by adding units" technique - ie breaking down the bigger number into 10 and units. Some children will be able to do the problems without breaking down the larger number, but we've provided space for them to do so.
Adding by Adding Units Worksheets Set 1
Here's a fun way to practise adding to 20 with a spooky Halloween twist. Print and cut out these Halloween Addition peg cards, then ask the kids to try the sums and "clip" the correct number at the bottom of each card.