Worksheet
Curated OER

Addition of Four Digit Numbers

For Students 2nd - 3rd
In this addition worksheet, students solve 12 problems in which four digit numbers are added. There is carrying on this page.
Lesson Plan
Curated OER

Chart Trivia

For Teachers 1st - 3rd
Students practice addition and subtraction problems and answer questions using greater than and less than. They chart information to create a graph on the computer.
Lesson Plan
Curated OER

Shopping for Toys

For Teachers 2nd - 3rd
Students pretend as if they have just won a $100 gift certificate to buy some toys and must try to spend as much of it as they can without going over.
Lesson Plan
Curated OER

Hula Hoop Hullabaloo

For Teachers 2nd
Second graders use hula hoops to represent the zero as they count objects into ones, tens, hundreds and thousands. They complete an activity to after they have practiced counting objects.
Lesson Plan
Curated OER

Just a Little Bit

For Teachers 2nd
Second graders read the book, "Just a Little Bit" and work in groups weighing the same object with a scale. They then get a different unit of measurement, like paper clips, cotton balls, washers, or pennies and then figure out and record...
Worksheet
Curated OER

Double Digit Fun

For Students 2nd
In this addition worksheet, 2nd graders solve the two digit addition problems by adding the ones first and then the tens. Students write their answers into the puzzle. Students solve 30 addition problems.
Lesson Planet Article
Curated OER

Subtraction Worksheets

For Teachers 2nd - 4th
Subtraction worksheets can be a useful way for students to practice necessary skills.
Lesson Planet Article
Curated OER

Lesson Plans That Meet The Needs of All Students

For Teachers 1st - 6th
Differentiated lesson plans are an excellent tool for meeting students' needs in the mixed ability classroom.
Handout
Cool Math

Coolmath: Coolmath4kids: Subtracting Numbers Within 100 With Regrouping

For Students 2nd - 3rd Standards
A step-by-step tutorial showing how to subtract using two-digit numbers in the tens and ones columns with regrouping. Includes sample problems to try. It also provides links to subtraction games and more.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Subtracting 2 Digit Numbers With Regrouping

For Students 2nd - 4th
[Free Registration/Login may be required to access all resource tools.] The video describes how to solve a two-digit subtraction problem with regrouping. The video is followed by additional problems for students to practice the skills...
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Subtracting 2 Digit Numbers With Regrouping

For Students 1st - 2nd
[Free Registration/Login may be required to access all resource tools.] The video describes how to subtract two-digit numbers using regrouping. The video is followed by additional problems for students to practice the skills discussed in...
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Overview of Addition Sums to 100 Word Problems

For Students 1st - 2nd Standards
[Free Registration/Login may be required to access all resource tools.] The video explains two addition problems one with regrouping and the other without regrouping.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Overview of Subtraction Numbers to 100

For Students 1st - 2nd Standards
[Free Registration/Login may be required to access all resource tools.] The video explains two, two-digit subtraction problems one with regrouping and the other without regrouping.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Overview of Addition Sums to 100 Word Problems

For Students 2nd - 4th Standards
[Free Registration/Login may be required to access all resource tools.] The video explains two addition problems one with regrouping and the other without regrouping.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Overview of Subtraction Numbers to 100 Word Problems

For Students 1st - 2nd Standards
[Free Registration/Login may be required to access all resource tools.] The video explains two subtraction problems one with regrouping and the other without regrouping.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Subtraction 3 Digits Minus 2 Digits

For Students 2nd - 5th
[Free Registration/Login may be required to access all resource tools.] The video describes how to use regrouping when subtraction a two-digit number from a three-digit number. The video is followed by additional problems for students to...
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: One Step Subtraction Numbers to 100 Word Problems

For Students 1st - 2nd Standards
[Free Registration/Login may be required to access all resource tools.] The video is a subtraction word problem that describes how to subtract using regrouping. The video is followed by a series of practice questions to assess student...
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Subtracting 2 Digit Numbers Without Regrouping

For Students 2nd - 4th
[Free Registration/Login may be required to access all resource tools.] The video describes how to solve a two-digit subtraction problem without regrouping. The video is followed by additional problems for students to practice the skills...
Handout
Cool Math

Coolmath: Coolmath4kids: Adding Numbers Within 100 With Regrouping

For Students 2nd Standards
Demonstrates how to regroup when adding 2-digit numbers.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Adding Two Digit Numbers Without Regrouping

For Students 1st - 2nd Standards
[Free Registration/Login may be required to access all resource tools.] The video describes how to solve a 2-digit addition problem without regrouping. The video is followed by practice problems.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Adding Two Digit Numbers Without Regrouping

For Students 2nd - 4th
[Free Registration/Login may be required to access all resource tools.] The video describes how to solve a 2-digit addition problem without regrouping. The video is followed by practice problems.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Adding Two Digit Numbers With Regrouping

For Students 2nd - 4th
[Free Registration/Login may be required to access all resource tools.] The video models how to add two-digit numbers using regrouping. The video is followed by practice problems.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Subtraction 3 Digits Minus 3 Digits

For Students 2nd - 5th
[Free Registration/Login may be required to access all resource tools.] The video shows how to subtract 3-digit numbers without regrouping. The video is followed by additional problems for students to practice the skills discussed in the...
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Subtraction Select the Incorrect Sentence

For Students 2nd - 4th
[Free Registration/Login may be required to access all resource tools.] The video shows how to use regrouping to solve a series of multi-digit subtraction problems to determine which one does not result in the given difference. The video...

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