Activity
Teaching Treasures Publications

Teaching Treasures: Year Two Math (Page 1)

For Students Pre-K - 1st Standards
Improve your computation skills using this interactive worksheet. Review two digit addition and subtraction facts. This worksheet gives students immediate feedback and is a suitable tool for short assessments or independent practice.
Unit Plan
Khan Academy

Khan Academy: Subtract 2 Digit Numbers (No Regrouping)

For Students 1st - 3rd
Practice solving problems like 45 - 24. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Subtracting 3 Numbers Word Problems

For Students 2nd - 4th
[Free Registration/Login may be required to access all resource tools.] The video describes how to solve a subtraction two-digit word problem with subtracting 3 numbers. The video is followed by additional problems for students to...
Unit Plan
Khan Academy

Khan Academy: Subtract Within 100

For Students 1st - 3rd
Practice subtracting 2-digit numbers. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unit Plan
Khan Academy

Khan Academy: Estimate to Add and Subtract Multi Digit Whole Numbers

For Students 1st - 3rd Standards
Use estimation to find a reasonable solution to multi-digit addition and subtraction problems. Numbers are less than or equal to 1000. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a...
Unit Plan
Khan Academy

Khan Academy: Regroup When Adding 1 Digit Numbers

For Students K - 1st
Practice adding numbers like 45+8. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Interactive
Quia

Quia: Subtracting to Win a Million

For Students 1st - 8th Standards
Students will love playing this "Who Wants to be a Millionaire," style game as they work through the subtraction problems. Some of the numbers are large, but there is no regrouping necessary.
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.
Interactive
Mr. Martini's Classroom

Mr. Martini's Classroom: Subtraction: Subtracting Ten

For Students 2nd Standards
Practice subtracting multiples of 10 from 2-digit numbers in this interactive exercise.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Subtracting One Digit Numbers in 2 Steps Word Problems

For Students 2nd - 4th Standards
[Free Registration/Login may be required to access all resource tools.] Practice problems where students subtract one-digit numbers in two step word problems. A helpful video pops up if students are solving the problems incorrectly to...
Unit Plan
Cool Math

Coolmath: Coolmath4kids: Adding Numbers Within 1000

For Students 3rd - 4th Standards
Step-by-step tutorial showing how to add 3-digit numbers in place value columns with and without regrouping. CCSS.Math.Content.3.NBT.A.2 Fluently add and subtract within 1000
Unit Plan
Khan Academy

Khan Academy: Addition Within 100

For Students 2nd - 3rd Standards
In this exercise, students practice addition within 100. Students receive immediate feedback and have the opportunity to watch a tutorial video get hints, and try questions repeatedly. CCSS.Math.Content.3.NBT.A.2 Fluently add and...
Unit Plan
Khan Academy

Khan Academy: Add and Subtract on a Number Line

For Students 1st - 3rd Standards
Practice adding and subtracting numbers like 554 and 237 using a number line. All numbers are less than 1000. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unit Plan
Khan Academy

Khan Academy: Subtract Within 20

For Students K - 1st Standards
Practice subtracting. All numbers in these problems are 20 or less. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a tutorial video, or receive hints.
Activity
Mr. Martini's Classroom

Mr. Martini's Classroom: Subtraction Using Borrowing

For Students Pre-K - 1st Standards
Students subtract one-digit numbers from two-digit numbers using borrowing on these interactive flashcards.
Unit Plan
Khan Academy

Khan Academy: Add 2 and 3 Digit Numbers (No Regrouping)

For Students 1st - 3rd Standards
Practice solving problems like 243 + 452. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unknown Type
Other

Internet 4 Classrooms: Subtract Multiples of 10 From Multiples of 10

For Students 2nd Standards
A ten-question quiz in which students subtract 2-digit numbers where both end in zero, i.e., multiples of 10.
Unknown Type
Varsity Tutors

Varsity Tutors: Aplusmath: Decimal Subtraction Worksheets

For Students 4th - 8th
Create customized decimal subtraction worksheets. Choose from basic facts to four-digit by four-digit questions. The size of problem set can be selected, as well as whether the format will be vertical or horizontal. An answer key can...
Unit Plan
Khan Academy

Khan Academy: Dividing Whole Numbers to Get a Decimal

For Students 5th - 7th Standards
Divide two whole numbers to get a quotient with a decimal. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unit Plan
Khan Academy

Khan Academy: Add Within 100

For Students 1st - 3rd Standards
Practice adding two-digit numbers. All numbers in these problems are 100 or less. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 2.nbt Many Ways to Do Addition 2

For Teachers 2nd Standards
This lesson plan has students exploring was to add and subtract numbers with multi-digits and place value.
Interactive
Mr. Martini's Classroom

Mr. Martini's Classroom: Big Number Flashcards: Subtraction Through 99

For Students 1st - 5th Standards
Learners can practice subtracting two-digit numbers through 99 with these interactive flashcards. The problems change color when the correct answer is given.
Unknown Type
Varsity Tutors

Varsity Tutors: Aplus Math: Non Java Flashcards (Mixed Topics)

For Students 3rd - 8th
Find a great selection of non-Java math flashcard activities. Choose from an index of flashcard topics of a variety of difficulty levels. Topics include: basic and advanced addition, subtraction, multiplication, and division, algebra,...
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Adding and Subtracting Three or More Numbers

For Students 2nd - 4th Standards
[Free Registration/Login may be required to access all resource tools.] This is a set of practice problems where students are given word problems where they have to add or subtract 3 or more 1-digit numbers.

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