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Worksheet
Curated OER

Subtracting 2 and 3-Digit Numbers

For Students 2nd - 3rd
In this subtraction activity, students complete a set of 20 problems that use 2 and 3-digit numbers. Some problems require regrouping.
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Worksheet
Curated OER

Subtracting Decimals

For Students 4th - 5th
In this subtraction of decimals learning exercise, students subtract decimals in 40 problems. These are 2 digit problems, written vertically, some with regrouping.
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Lesson Plan
Curated OER

Let's Shop

For Teachers 3rd - 5th
Upper graders add and subtract decimals, using concrete objects and story problems. Note: The Concentration Cards and Homework assignment link at the bottom of the plan doesn't work.
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Worksheet
Curated OER

Addition A

For Students 2nd - 3rd Standards
Learners solve twenty five addition problems involving a series of one digit numbers. This worksheet would be a quick and easy way to review this topic.
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Lesson Plan
Curated OER

Hangtags and Labels

For Teachers 9th - 12th
Students brainstorm the information found on hangtags and labels. They discuss the necessity of hang tags and create a hangtag to advertise or identify themselves. Afterward, they share their tags with their peers and answer discussion...
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Lesson Plan
Curated OER

Career Stories

For Teachers 2nd
Second graders write and solve word problems related to career stories.
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Lesson Plan
Curated OER

Place Value Popsicles

For Teachers 1st - 2nd
Students play a place value game using popsicle sticks and dice. They investigate units and tens.
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Lesson Plan
Curated OER

Shopping for Toys

For Teachers 2nd - 3rd
Young scholars 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.
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Interactive
NumberNut

Number Nut: Subtraction: Subtracting From Two Digit Numbers

For Students K - 1st Standards
Explains how to subtract from two-digit numbers, with or without regrouping.
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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...
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Unit Plan
Khan Academy

Khan Academy: Subtracting Two Digit Numbers (No Regrouping)

For Students Pre-K - 1st Standards
In this exercise, students practice subtracting two-digit numbers (no regrouping). Students receive immediate feedback and have the opportunity to watch a tutorial video, get hints, and try questions repeatedly.
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Unit Plan
Lawrence Hall of Science

The Math Page: Skill in Arithmetic: The Meaning of Subtraction, and Mental Calculation

For Students Pre-K - 1st Standards
This website explains and defines basic subtraction. There are practice problems at the very end of this lesson.
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Unknown Type
Khan Academy

Khan Academy: Regrouping: Two Digit Number Minus One Digit Number

For Students Pre-K - 1st Standards
In this exercise, students practice regrouping with two-digit number minus one-digit number. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
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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.
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Lesson Plan
Other

Nearpod: Subtraction With Regrouping: Three Digit

For Teachers 2nd - 4th Standards
In this lesson on subtraction, students will use the break apart strategy, draw a model, or the standard algorithm to subtract 3-digit numbers.
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Lesson Plan
Other

Nearpod: Subtraction With Regrouping: Two Digit

For Teachers 2nd - 4th Standards
In this lesson plan on subtraction, students will use the break apart strategy, draw a model, or the standard algorithm to subtract 2-digit numbers.
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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...
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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...
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Unit Plan
Khan Academy

Khan Academy: Subtraction Within 1000

For Students 3rd - 5th Standards
In this exercise, students practice subtraction within 1000. Students receive immediate feedback and have the opportunity to get hints, watch video tutorials, and try questions repeatedly. CCSS.Math.Content.3.NBT.A.2 Fluently add and...
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Activity
Lawrence Hall of Science

The Math Page: Skill in Arithmetic: Subtracting Whole Numbers and Decimals

For Students 3rd - 8th Standards
If you are looking for a website that explains and defines subtraction with decimals you have arrived at an excellent resource. There are even practice problems at the very end of the lesson.
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Unknown Type
Khan Academy

Khan Academy: Regrouping When Adding One Digit Numbers

For Students Pre-K - 1st Standards
In this exercise, students practice regrouping when adding one-digit numbers. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
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Unknown Type
Khan Academy

Khan Academy: Adding Two Digit Numbers (No Regrouping)

For Students Pre-K - 1st Standards
In this exercise, students practice adding two-digit numbers (no regrouping). Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
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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...
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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...

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