Add a one-digit number or a multiple of 10 to a two-digit number, totals up to 99, using models, drawings and place value reasoning.






Standards are described in our own words. Read the official South Carolina document.
Tell us what would help your class practice it.
Each worksheet is matched to the skills it practices, and this standard to the skills it asks for. Everything here shares at least one of them. All of it is free to print and use.