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# 2.NBT.B.5 Lesson Plans

#### CCSS.MATH.CONTENT.2.NBT.B.5

:
"Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction."

Our Take: When solving addition and subtraction problems within 100, the second grade student can choose from a variety of strategies based on place value and properties of operations. For example, when adding 25 and 46, instead of using the standard method of carrying, the child might focus on place value, breaking both numbers into tens and ones. In this case, the student would find the sum of 20 and 40, then 5 and 6, which adds up to 60 + 11 and ultimately the final answer of 71.

These lesson plans can help students practice this Common Core State Standards skill.

## Lesson Plans

Number Chart Subtraction
Lesson plan
Number Chart Subtraction
Subtraction will be practiced through the use of a number chart, creation of subtraction problems, and a worksheet.
Math
Lesson plan
Lesson plan
Students will work together as well as individually to add up coins to a desired amount. This real life skill will be made fun when students get to physically count out their cents!
Math
Lesson plan
You Be the Judge!
Lesson plan
You Be the Judge!
Give students an opportunity to practice subtraction and analyze their peers' work with this fun lesson. Young mathematicians will have a great time playing a judging game and completing quirky worksheets.
Math
Lesson plan
Double Trouble: Subtraction Practice
Lesson plan
Double Trouble: Subtraction Practice
Double-digit trouble? No problem! Your students will practice their decomposing and regrouping skills in this lesson.
Math
Lesson plan
Lesson plan
In this lesson, students will learn how to add a one-digit number to a two-digit number. This will help students build upon the skills needed for regrouping larger numbers.
Math
Lesson plan
Lesson plan
Make addition with regrouping easy with this lesson plan that makes the task a visual learning experience.
Math
Lesson plan
101 and Out!
Lesson plan
101 and Out!
Get the dice out and help students get targeted practice in adding 1 and 10! In this fun place value game, students keep adding to try to get to a maximum score of 100. But be careful. If you go over 100 you’re out!
Math
Lesson plan
Break It Down
Lesson plan
Break It Down
What exactly does the number 97 mean? How about 454? In this lesson, students explore how two-digit numbers are made up of tens and ones. Then they use this understanding to subtract numbers within 1000.
Math
Lesson plan
Memory Game: St. Patrick's Day Math Edition
Lesson plan
Memory Game: St. Patrick's Day Math Edition
In this St. Patrick's Day lesson, your students will play the card game memory! Students will create their own cards using addition math facts within 100 and apply different addition strategies to increase their fluency as they play.
Math
Lesson plan
Composing and Decomposing
Lesson plan
Composing and Decomposing
Use this lesson to introduce composing and decomposing as part of your students’ addition and subtraction toolkits.
Math
Lesson plan
Lesson plan
Guide students to use base ten blocks to solve two-digit by one-digit addition problems with regrouping. This lesson can be used independently or paired with the lesson Adding it All Up.
Math
Lesson plan
Lesson plan
Use this lesson to help students build their speaking and listening skills as they learn how to critique a flawed response using discussion cards. Use this as a stand-alone support lesson or alongside the activity Break it Down!
Math
Lesson plan
Lesson plan
Independent learning just got way easier! The Second Grade Independent Study Packet supports students who may be away from school for a variety of reasons—whether it's home hospital, snow days, hurricane days, or a holiday break. Rest easy knowing that students will have the opportunity to practice and strengthen their grade-level skills with engaging educator-created resources.
Lesson plan

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