In this Subtraction as an Unknown Addend Activity, students find the unknown whole number in addition and subtraction equations up to 20.

In this Adding Two Digit Numbers Activity, students add up to four two-digit numbers using strategies based on place value and properties of operations.

In this Adding and Subtracting Unknown Numbers Activity, students find the unknown whole number in addition and subtraction equations up to 20.

Using this St. Patrick's Day Fact Families Worksheet, students complete the fact families for each set of numbers. This worksheet is fun for kids during the month of March and for your St. Patrick's Day party. Your kids will have fun creating the different fact families with a 4 leaf…

Using Subtraction With 6-7-8-9 Differences Activity, students solve single digit subtraction equations, then sort answers into categories.

Using Subtraction With 2-3-4-5 Differences Activity , students subtract single digit subtraction equations, then sort differences into categories.