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PPT
Curated OER

Suma de dos Digitos

For Teachers K - 2nd
Step-by-step instructions on adding two-digit numbers are visualized in this colorful PowerPoint. There are a total of eleven example problems for students to complete as a class. Note: Instructions are in Spanish.
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Activity
Illustrative Mathematics

Find the Missing Angle

For Teachers 7th - 9th Standards
This one activity requires young geometers to pull together information they are currently learning with things they have learned previously. Here they rely on understanding something about parallel lines, alternative interior angles,...
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Worksheet
Curated OER

Missing Addends

For Students 1st - 2nd
Where are all the addends? Addition novices solve 36 equations by filling in the single-digit addend to achieve the given sum. They reference several examples, each of which include object sets to help learners visualize the concept....
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Worksheet
Curated OER

Addition Grid

For Students 1st Standards
Which of these numbers add up to 20? Scholars find various addend pairs in a grid, circling those that add up to 20. There are many pairs they can find here, and the answer sheet offers some excellent kinesthetic practice ideas for...
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Worksheet
DK Publishing

Adding with 3-digit Numbers #2

For Students 2nd - 3rd Standards
These 25 addition problems each have two 3-digit addends, and many require regrouping. There are three examples to guide learners in all the types of problems they encounter, including the last set of five which have four-digit sums....
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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

Ordering

For Students 1st - 2nd Standards
Money is a great medium for math problems, and learners practice with coins in these addition equations. First, they add up five sets of coins (one is done for them), writing down the totals below each. Next, scholars sequence these...
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Lesson Plan
EngageNY

Discrete Random Variables

For Teachers 11th - 12th Standards
You don't need to be discreet about using the resource on discrete variables. In the fifth installment of a 21-part module, scholars explore random variables and learn to distinguish between discrete and continuous random variables. They...
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Worksheet
Curated OER

Add and Subtract Within 20

For Students K - 2nd
Break down addition and subtraction into short sentences using this brief worksheet. Each question prompts scholars to make a number by doing three math operations. For the first, they make 10 by adding three, adding five, and...
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Lesson Plan
Virginia Department of Education

How Many Triangles?

For Teachers 9th - 11th Standards
Something for young mathematicians to remember: the sum of any two sides must be greater than the third. Class members investigates the Triangle Inequality Theorem to find the relationship between the sides of a triangle. At the same...
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Worksheet
Curated OER

Do College Rankings Matter?

For Students 10th - 12th
How do you know which college is for you? Upper graders consider multiple factors about the college application process, the college system, and how colleges are ranked. They read a New York Times article on the subject then compose blog...
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Worksheet
Curated OER

Adding 2-Digit Numbers, part 2

For Students 2nd - 3rd Standards
Looking for addition practice problems? You've found them! This worksheet features 30 double-digit addend equations and three examples to guide young mathematicians. Because they incorporate carrying for almost every problem, this may be...
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Worksheet
Curated OER

More and Less

For Students 1st - 2nd
Mental mathematicians add and subtract 1, 10, and 100 from sets of numbers. Each set of one, two and three-digit numbers gives scholars a chance to practice their addition and subtraction skills. There are 62 whole numbers in all. What...
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Worksheet
Mathed Up!

Estimation

For Students 4th - 6th Standards
Reinforce estimation and the four operations—addition, subtraction, multiplication, and division—with eight page, 15 problem independent practice exercise.
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Worksheet
Mt. San Antonio Collage

Properties of a Parallelogram

For Students 9th - 12th Standards
More than just a worksheet, the resource provides a thorough guide to navigate through the land of parallelograms. Filled with definitions and theorems, the resource supports learners through problems such as proofs and finding missing...
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Worksheet
Lane Community College

Review Sheets: Basic Mathematics 1

For Students 5th - 8th Standards
Here is a learning exercise that is 3/4 fraction practice and 1/4 skills guide. The problems are organized by concept and each section bullet points the skills needed to accomplish them. The problems are straightforward practice with...
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Worksheet
Curated OER

Santa's List Sums (C1)

For Students 1st - 2nd
In this Christmas math activity, students solve 17 problems in which the number of boys and girls on each street are added and the sum recorded on Santa's list. All numbers are below 10.
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Worksheet
Curated OER

Estimate Sums

For Students 3rd - 5th
In this estimating sums worksheet, students solve 6 word problems where they estimate the sum of 3 digit numbers by rounding to the nearest 10, 100 or 1000.
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Worksheet
Curated OER

Lab 2: Euler's Method and Riemann's Sums

For Students Higher Ed
In this Euler's Method and Riemann's Sum worksheet, students identify the best situation in which to use Euler's Method and Riemann's Sum. They identify the initial value of a problem and use the accumulation formula to determine the...
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Worksheet
Curated OER

Sums of 3, 4, and 5

For Students K - 1st
In this basic mathematics worksheet, students add each of the colored buttons to get their answer. They use addition to solve each of the 16 problems on the sheet.
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Worksheet
Curated OER

Use a Number Line to Add - Practice

For Students 1st
In this math worksheet, 1st graders use a number line to practice finding the sums in 18 single digit addition problems. They complete a test prep question in which they find a sum and explain which number they should count from and tell...
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Worksheet
Curated OER

Quiz: 15 Estimating Fractions Sums and Differences

For Students 5th - 6th
In this estimating fraction sums and differences worksheet, students complete a total of 15 problems. Answers are included on page 2. Labeled as quiz but suitable for practice.
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Lesson Plan
Curated OER

Finding The Sum of an Infinite Series

For Teachers 9th - 12th
High schoolers examine finding the sum of an infinite series as the limit of partial sums. Through hands-on activities, students create their own sequence by finding the area of a square and then cutting it in half-sized pieces. They...
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Worksheet
Curated OER

Angle Sum and Difference

For Students 11th
In this angle sum and difference worksheet, 11th graders solve 10 different problems related to determining the angle sum and difference of numbers. First, they determine the exact value of sine and cosine degrees. Then, students utilize...

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