This three addends addition problem solving worksheet gives 2nd graders five word problems that add three two-digit numbers, with an answer key to make checking quick and easy.

This Triple Digit Adding Regroup Worksheet gives 2nd Grade students six column problems and two word problems on three digit addition with regrouping, plus a full answer key.

Using the Adding 5 Song (MP3), students sing and practice adding 5 with all addition facts 1-15. Your kids will learn how to add 5.

In this 2.NBT.7 Second Grade Common Core Lesson students fluently add and subtract within 100o using multiple strategies.

In this 2.NBT.8 Second Grade Common Core Lesson, students mentally add and subtract 10 or 100 from a given number 100–900.

Using Adding Five Matching Worksheet, students solve equations where they are adding five to the first addend.

Using Addition 0-12 Flash Cards, students practice adding two numbers between 0-12 to build mental math and fluency skills.

This Let's Workout Our Brain Add Subtract Within 20 activity gives 1st-2nd grade students two mental math card games, a score sheet and a practice page, with an answer key included.

This 1.OA.2 common core activity has 1st and 2nd Grade children solve three-addend story problems and match each story card to its sum card. Story log, practice page and answer key included.

This add and subtract with frogs activity has 1st and 2nd Grade students flip lily pad cards and spin to add or subtract within 20, with a record sheet, practice page and answer key included.

This double digit adding without regrouping worksheet has 2nd grade students split each problem into tens and ones, add each part, and find the sum. An answer key is included for fast checking.

This Double Digit Adding No Regrouping Worksheet helps 2nd grade students add two-digit numbers in columns and solve two word problems. An answer key is included for quick checking.

Using the Adding 2 Song (Lyric Mjusic Video), students sing and practice adding 2 with all addition facts 1-15. Your kids will learn how to add 2.

Using the Adding 7 Song (MP3), students sing and practice adding 7 with all addition facts 1-15. Your kids will learn how to add 7.

Using the Adding 11 Song (MP3), students sing and practice adding 11 with all addition facts 1-15. Your kids will learn how to add 11.

Using Why Does it Work Addition Subtraction Strategies Activity, students explain why addition and subtraction strategies work, using place value and the properties of operations.

In this Adding Tens and Tens Activity, students will practice adding 10 to a given number to build addition fact fluency.

Using Adding to Make 10 Activity, students match addition equation cards with missing addend cards to show equations that make 10.

In this 2.MD.6 Second Grade Common Core lesson, students will add and subtract within 100 on a number line.

This 2.NBT.6 Second Grade Common Core Lesson includes 2.NBT.6 Worksheets, 2.NBT.6 Activities, 2.NBT.6 Assessment, and 2.NBT.6 Poster