Addition
Learn addition concepts through games, activities, exercises and worksheets.
Draw pictures to represent math problems under 10.
Find the whole number that solves the equation. Practice both addition and subtraction.
Write an equation to express the total as a sum of equal addends. Halloween math worksheet.
Solve word problems that call for addition of three whole numbers whose sum is less than 20.
Use addition and subtraction to solve word problems up to the number 20.
Fluently add and subtract within 20 using mental strategies. CCSS.Math.Content.2.OA.B.2
Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).
Practice for CCSS.Math.Content.1.OA.C.6 Add and subtract within 20, demonstrating fluency for addition and subtraction within 10.
CCSS.Math.Content.1.OA.D.7 Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false.
Practice for CCSS.Math.Content.1.OA.D.8. Determine the unknown whole number in an addition or subtraction equation relating three whole numbers.
Practice CCSS.Math.Content.1.NBT.C.5 Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.