Khan Academy
Khan Academy: Add and Subtract on a Number Line
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.
Khan Academy
Khan Academy: Subtract Within 20
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.
Varsity Tutors
Varsity Tutors: Aplus Math: Non Java Flashcards (Mixed Topics)
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,...
Toy Theater
Toy Theater: Math Test
You choose the type of math test you want to take: addition, subtraction or multiplication. Then decide how many digit you want in your problem. Click "Start" and type in the answer. Click "Next" to get the next problem. It keeps track...
Mr. Martini's Classroom
Mr. Martini's Classroom: Subtraction Using Borrowing
Students subtract one-digit numbers from two-digit numbers using borrowing on these interactive flashcards.
CK-12 Foundation
Ck 12: Elem Math: Subtracting One Digit Numbers Word Problems
[Free Registration/Login may be required to access all resource tools.] The video shows how to solve a subtraction problem by creating a model. The video is followed by a series of practice questions to assess student comprehension of...
Khan Academy
Khan Academy: Add Within 100
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.
Illustrative Mathematics
Illustrative Mathematics: 2.nbt Many Ways to Do Addition 2
This lesson plan has students exploring was to add and subtract numbers with multi-digits and place value.
Mr. Martini's Classroom
Mr. Martini's Classroom: Big Number Flashcards: Subtraction Through 99
Learners can practice subtracting two-digit numbers through 99 with these interactive flashcards. The problems change color when the correct answer is given.
Varsity Tutors
Varsity Tutors: Aplus Math: Subtraction Worksheets
Create customized 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 also be...
Mr. Martini's Classroom
Mr. Martini's Classroom: Subtraction Quiz (10 to 99)
Students subtract numbers from 10 to 99 with this interactive graded quiz.
Khan Academy
Khan Academy: Addition Using Groups of 10 and 100
In this exercise, students practice addition using groups of 10 and 100. Students receive immediate feedback and have the opportunity to get hints, watch a video tutorial, and try questions repeatedly. CCSS.Math.Content.3.NBT.A.2...
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: The Meaning of Subtraction, and Mental Calculation
This website explains and defines basic subtraction. There are practice problems at the very end of this lesson.
NumberNut
Number Nut: Subtraction: 1 to 10
Subtraction is about taking things away. Learn how to set up the problem and work with single-digits to 10. Then practice the skills with the two interactive subtraction activities.
Khan Academy
Khan Academy: Add 1s or 10s (No Regrouping)
Practice solving problems like 34+5 and 34+50. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.