# Addition and subtraction within 20

Contents

Learn to add and subtract numbers that are 20 or less.

10 exercises available

Learn to add. Numbers used are 20 or less.

Learn to subtract. Numbers used are 20 or less.

Learn how to solve problems like "___ + 7 = 18" where you don't know one of the values in an addition or subtraction equation.

Learn how to solve addition and subtraction word problems. Numbers used are 20 or less.

Learn how to solve word problems that use the words "more" and "fewer". Numbers used are 20 or less.

Adding the same number to itself over and over