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Instructional Video3:54
Curated OER

What is the Opposite, or Additive Inverse, of a Number?

For Teachers 7th - 9th
Teach your class about the additive inverse! Using examples first and a definition second, this video explains what the additive inverse it and how to find the additive inverse of any given number or variable. A quick concept review for...
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Lesson Plan
Curated OER

Two-Digit Addition: No Regrouping (A)

For Teachers 3rd - 6th
This worksheet provides 100 two-digit addition problems to solve. None require regrouping. The answer key is provided.
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Lesson Plan
Curated OER

Four-Digit Plus Three-Digit Addition (A)

For Teachers 3rd - 6th
The worksheet provides 100 problems that require adding four and three-digit numbers. The answer key is included.
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Worksheet
Curated OER

Addition Worksheet

For Students 3rd - 4th
In this addition worksheet, learners will determine the sum of 20 double digit addition problems where they must utilize regrouping.
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Lesson Plan
Curated OER

Four-Digit Plus Three-Digit Addition (B)

For Teachers 2nd - 5th
This worksheet provides 100 problems that require adding four-digit and three-digit numbers. The answer key is included.
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Instructional Video4:13
Curated OER

Primary Maths Addition

For Teachers 3rd - 4th
Learning new ways to look at basic addition problems can help young mathematicians better grasp place value, expanded form, and carrying. Watch the instructor add two and three-digit numbers together by breaking each number into tens and...
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Instructional Video1:36
Curated OER

Learn Math, Primary Math Addition

For Teachers Pre-K - 1st
Kindergartners just learning how to count on will love this video. A man and a woman each have a group of cars. The woman counts her five cars, the man counts his four cars, and then they decide to put their cars together. When they do,...
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Instructional Video1:14
Curated OER

What is Addition?

For Teachers 2nd - 4th
Cassandra (a student) does a great job defining the concept of addition. She provides a visually stimulating video, 4 examples of addition, and a full explanation of each example. A cute clip sure to educate and entertain.
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Worksheet
Math Salamanders Ltd.

Column Addition: Money 3 Digits

For Students 4th - 5th Standards
Math whizzes solve 20 addition problems. Each problem has two money amounts added in vertically lined up columns.
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Lesson Plan
Curated OER

Addition Practice: Various Digits (A)

For Teachers 3rd - 6th
This worksheet provides 100 addition problems that require adding 2 numbers of varying digits. The answer key is included.
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Lesson Plan
Curated OER

Number Addition Race

For Teachers 1st - 2nd
Practice basic addition facts and measuring skills. In this addition and measurement lesson, students are provided with drywall tape and work in groups of four at a long table. Partners take turns generating addends and marking the...
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Lesson Plan
Curated OER

Two-Digit Addition at the Zoo

For Teachers 2nd
Your second graders explore two digit addition with regrouping. They will investigate problem solving strategies within the context of a trip to the zoo. Multiple resources and assessments are provided.
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Lesson Plan
Curated OER

Addition Word Problems

For Teachers 3rd - 4th
Are you looking for some good addition word problems in worksheet form? Then this resource could be for you! In it, learners are given eight rather simple word problems that all require addition to solve. This is an excellent assessment,...
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Worksheet
Curated OER

Column Addition

For Students 3rd - 4th
Third and fourth graders read the addition word problems and use the sets of numbers within the problem along with column addition to solve the problems.
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Worksheet
Curated OER

Thanksgiving Addition

For Students 2nd - 4th
If you are teaching two-digit addition, this would be a good learning exercise for you to consider using. Pupils add 19 problems. Each problem has three addends of two-digits each. An answer key appears on the second page of the packet.
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Lesson Plan
Curated OER

Study Buddies: Adding Three-Digit Numbers

For Teachers 2nd - 3rd
For this math worksheet, students will work with a coach to solve a story problem in which they must add three-digit numbers. Students will follow a step-by-step process and notes are provided for the coach.
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Worksheet
Curated OER

Column Addition practice 4.6

For Students 3rd - 4th
In this adding columns instructional activity, students add two-digit and three-digit numbers, use symbols to compare pairs of addition problems, and solve word problems. Students solve nineteen problems.
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Worksheet
Curated OER

Addition Practice

For Students 3rd - 4th
In this addition worksheet, students practice their adding skills. Kids are given twenty addition problems with missing sums or addends where students are to find the missing numbers.
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Worksheet
Curated OER

Timed Addition Tests

For Students K - 2nd
You have 90 seconds! Get your young mathematicians excited about simple addition in these two timed tests, each with twenty-one problems. Equations only involve single-digit numbers, and only two numbers per addition problem. Start a...
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Worksheet
Curated OER

Column Addition, 4-Digit Numbers

For Teachers 4th - 5th Standards
Just follow the columns! Young mathematicians complete 16 addition problems with five addends each. They examine two examples before doing these, and the example problems demonstrate carrying one and two into the next column. Encourage...
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Interactive
Physics Classroom

Vector Addition

For Students 9th - 12th Standards
Three levels of practice assure scholar mastery of vector addition. After inputting an incorrect answer, another problem replaces it so everyone finds success. The lesson works as one part of a series on vectors and projectiles.
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Worksheet
Curated OER

Decimal Addition

For Students 4th - 6th
Practice adding decimals by completing 26 practice problems. Scholars examine two examples before trying these on their own. They add two and three-digit numbers with decimals, regrouping when needed. Not all numbers have decimals, but...
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Worksheet
Curated OER

Addition Squares

For Students 3rd - 4th
In this addition worksheet, students practice their adding skills. Students complete addition squares where they have four sums and are to find the two addends for each sum. There are five squares in all.
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PPT
Curated OER

Horizontal Addition

For Teachers 3rd - 4th
Here are four examples of double-digit horizontal addition. Learners are shown how to compute numbers horizontally, by first adding the tens and then the ones columns and then adding them both together. This is a great way to boost...