# 2.NBT.B.5 Worksheets, Workbooks, Lesson Plans, and Games

#### 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 worksheets can help students practice this Common Core State Standards skill.

## Worksheets

Worksheet
Kids solve addition problems with two-digit addends to move from ice chunk to ice chunk and help Polly get to her cub on this second grade math worksheet.
Math
Worksheet
Worksheet
Math
Worksheet
Cow Subtraction
Worksheet
Cow Subtraction
On this second grade math worksheet, kids help Cory the Cow by solving subtraction problems with two-digit numbers and no regrouping.
Math
Worksheet
Subtraction with Regrouping: Octopus Math
Worksheet
Subtraction with Regrouping: Octopus Math
Kids help Olga the Octopus on this second grade math worksheet by solving subtraction problems with two-digit numbers using regrouping.
Math
Worksheet
Addition and Subtraction: Math Mosaic 1
Worksheet
Addition and Subtraction: Math Mosaic 1
After kids solve the two-digit addition and subtraction problems on this second grade math worksheet, they use the key to color in the shapes on the mosaic.
Math
Worksheet
Math Mosaic
Worksheet
Math Mosaic
After kids solve the two-digit addition and subtraction problems on this second grade math mosaic, they use the key to color in the shapes.
Math
Worksheet

## Lesson Plans

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
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
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
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

## Workbooks

No workbooks found for this common core node.

## Games

Game
Kids practice mentally adding sums up to 30 in this fast-paced addition race.
Math
Game
Game
Math learners hone their multi-digit addition skills in this interactive game show!
Math
Game
Ski Racer: Subtraction Within 30
Game
Ski Racer: Subtraction Within 30
Kids practice subtraction within 30 as they race down the mountain in this fast and fun math game!
Math
Game
Game
Kids try to match the equations that equal the same number in this online math game!
Math
Game

## Exercises

Two-Digit Subtraction and Regrouping
Exercise
Two-Digit Subtraction and Regrouping
This exercise showing how to execute two digit subtraction using regrouping makes the second step in subtraction much more accessible.
Math
Exercise