EngageNY
Unknown Angle Proofs—Proofs of Known Facts
Lead the class in a Greek history activity with a geometric twist. Pupils relate a short video about geometric properties to modern-day methods of solving for unknown angles. They discuss parallel line theorems and complete practice...
West Contra Costa Unified School District
Pythagorean Theorem and Its Converse
Challenge scholars to prove the Pythagorean Theorem geometrically by using a cut-and-paste activity. They then must solve for the missing sides of right triangles.
Curated OER
Ten Cents a Word
Learners recognize the importance of summarizing in this lesson. They "sum up" an article about monarch butterflies. Students practice writing summaries of the article charging themselves 10 cents/word. They try to write the least...
Curated OER
Adding Tens
In this adding tens worksheet, 2nd graders find the sums to three addition math problems by adding tens together. Students study the example given.
Curated OER
Easter Addition
In this Easter addition worksheet, students problem solve and calculate the answers to twenty-five addition equations and color all of the Easter eggs that have an even numbered sum.
Curated OER
Rounding Riddles
In this math worksheet, students solve seven riddles. Each riddle describes a number and involves rounding. Students round numbers in the riddle to find the solution.
Curated OER
Thanksgiving Addition: Worksheet 10
Find the sum of the nineteen addition problems on this Thanksgiving-themed worksheet. Your class will practice adding two 2-digit numbers with regrouping. There is also one word problem to be solved.
Curated OER
Fun Math 67
In this finding the sums worksheet, students add one-digit plus one-digit numbers on a page with fun clip art next to each problem. Students solve 15 problems.
Curated OER
Estimating Solutions to Word Problems
Learners use estimation to determine the answers to word problems by rounding whole numbers. In this estimation lesson plan, pupils compare and contrast solutions using the best answer.
Curated OER
Crabby Math
Here are 4 different (yet related) worksheets and an answer key for each. The class will work through each sheet, adding single-digit number to find sums. They then color in the sums that meet each worksheets instructions. For example:...
Curated OER
Adding and Subtracting Integers: The Symbols + and -
This worksheet begins with an explanation of how to add and subtract positive and negative integers. Learners solve and complete 20 different problems that include these types of problems. First, they fill in each blank with the correct...
Illustrative Mathematics
Mixed Numbers with Unlike Denominators
There is more than one way to add mixed numbers. This worksheet asks 5th graders to find and record two ways. The purpose is to help pupils realize there are different ways to reach a common solution in math. The two most common ways are...
Curated OER
Adding Decimals
Adding decimals can be simple; show scholars the practical uses of adding numbers with decimals as they add measurements and amounts of money. The first eight equations are written vertically with some sums requiring a dollar sign, some...
Curated OER
What's the Perimeter?
Find the perimeter of squares and rectangles with a straightforward worksheet. An example at the top of the page shows third graders how to find the perimenter, along with the addition problem necessary to find it. Pupils then work on...
Curated OER
Addition Drills, part 2
Add them up! Scholars add up double-digit addends to find sums for 32 equations. There are three examples learners can reference if needed, and they have to regroup for many of these. The equations aren't numbered, so consider doing this...
DK Publishing
Addition: Count and Color, part 3
Approach addition with sets of objects to show scholars the operation visually. There are four sets of images here arranged as addends in an addition number sentence. Learners count them and color in the total in a final set. All answers...
Curated OER
Adding/Subtracting Integers
In this integer activity, students find the sum and difference of positive and negative integers. Each equation contains two to three terms, with multiple operations. Thirty problems are provided, with an answer sheet.
Curated OER
Cross Out
In this number grid worksheet, 3rd graders look over a number grid, cross out the numbers in 5 directives, fill in the blank to one question and then double check their answers. Students make their own original cross out grid.
Curated OER
Adding 4 Numbers
In this addition worksheet, 2nd graders find the missing number in 11 addition problems involving adding 4 single digit numbers together to get a specific sum.
Curated OER
Math Handbook: Trigonometry
You'll be spinning in unit circles once you read through this jumbo-sized resource of everything you need to know about trigonometry. Each page has color-coded examples with explicit directions that detail the problems and formulas.
Curated OER
Circle the Wagons a Number is Missing
Second graders have an opportunity to work in pairs as they search for the missing addend to complete a mathematical sentence. They identify and demonstrate the ability to change the order of the addends and still produce the same sum....
Curated OER
Missing Number Problem
In this secondary mathematics worksheet, high schoolers identify the ten positive numbers less than 1000 that cannot be written as the sum of consecutive natural numbers. The one page worksheet contains one problem with the solution.
Curated OER
Money Addition (F)
For this money addition worksheet, student find the sums of money amounts up to the tens place. They regroup as needed in each problem.
Curated OER
Multiplication Facts for 2, 5, and 10
Students improve their multiplication skills by completing the multiplication equations for facts 2, 5, and 10. In this multiplication facts lesson, students use different colored markers to mark on a number line and skip count by 2s....