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American Chemical Society
Production of a Gas - Controlling a Chemical Reaction
Though the publisher designated this unit for use with third through eighth grades, this particular activity would be best used with middle schoolers due to the specific measurement skills required. Basically, they set up the reaction...
Math Salamanders Ltd.
Column Addition - 3 Digits Sheet 1
In this addition worksheet, students add three-digit numbers together. Three problems have the kids adding three three-digit numbers together. The students work through 15 problems.
Curated OER
Addition and Subtraction
In this addition and subtraction worksheet, students add and subtract three and four-digit numbers with decimals. They justify their answers. This two-page worksheet contains approximately 12 problems.
Math Salamanders Ltd.
Column Addition (No Carrying) - 2 Digits Sheet 1
Learners complete 12 problems, adding 2-digit numbers. Problems do not require carrying. A reference website is given for additional activities.
Curated OER
Study Buddies: Adding Two-Digit Numbers
Some times a simple lesson is all you need. Here are 2 worksheets that can be used as a lesson on problem solving, addition, and partner work. The first worksheet has learners use a tens and ones charts to practice adding simple...
Curated OER
Addition Grids
In this addition grid worksheet, students complete 6 grid by adding numbers between 1 and 10. They add a number from the first column with one from the top row and enter the sum in the adjacent box.
EngageNY
Complex Numbers as Vectors
Show your math class how to use vectors in adding complex numbers. Vectors represent complex numbers as opposed to points in the coordinate plane. The class uses the geometric representation to add and subtract complex numbers and...
Curated OER
Adding Polynomials with Algebra Tiles
High schoolers practice adding polynomials using algebra tiles. Students view a PowerPoint presentation in which they are introduced to the concept of modeling polynomials using a scaled down version of algebra tiles. High schoolers...
Curated OER
Column addition worksheet
In this addition worksheet, students add one digit numbers together. Students complete 15 problems where they add one digit numbers with the number 1 and 2.
Curated OER
Add the Problems
In this math worksheet, students practice addition of three 1-digit numbers in a column. There are 12 problems on the page written vertically.
Curriculum Corner
Second Grade Summer Math Practice Book
Stop the summer lag with a set of second grade Common Core based math practice sheets. Learners fill in hundreds charts with missing numbers up to 1,000. They practice writing numbers in standard, expanded, and word form. Children also...
Curated OER
Add and Subtract within 20 - Guided Lesson Explanation
Provide second graders with an explanation for how to find the total value of numbers written in a series of boxes.. The resource provides answers and explanations for problems on a referenced learning exercise that is not included.
Curated OER
Number Block 3
For this addition practice puzzle worksheet, learners practice their addition skills as they try to fill the missing numbers in the puzzle in so that the numbers in the rows and columns equal the totals indicated using integers between 2...
Curated OER
Addition Worksheet
In this addition worksheet, learners add twenty pairs of two digit numbers. There is no regrouping involved in this worksheet, all answers for the ones and the tens columns are equal to or less than 9.
Curated OER
Math Puzzle Worksheet: Box Addition Version 4
In this math puzzle worksheet, students fill in missing numbers in boxes to complete a puzzle; totals are given for rows and columns, missing numbers are part of the correct totals.
Curated OER
NUMB3RS - Season 2 - "Convergence" - Air Hockey
Learn how to use a matrix to organize data to solve a problem. This activity uses wins and losses to rank players for an air hockey tournament they wish to have. After practicing some basic matrix operations the class could do the...
Curated OER
Addition-Multiple Numbers
In this addition instructional activity, students complete 6 problems, adding 5 numbers together. An answer link appears at the bottom of the page.
Curated OER
Answer Match
For this addition and subtraction practice worksheet, students solve 26 problems that require them to add and subtract using 3-digit numbers. Students match the problems that have the same sums and differences.
Curated OER
Add and Subtract Whole Hundreds
In this addition and subtraction activity, students add and subtract whole hundred numbers. Students complete 5 problems on this activity.
Curated OER
Investigation - Who is Right?
Third graders explore mathematics by solving problems in groups. In this math functions lesson plan, 3rd graders demonstrate their understanding of addition and subtraction by completing two digit math problems. Students define a list of...
Curated OER
Magic Squares
In this math puzzle worksheet, students solve 5 magic square puzzles that require them to fill in the blanks so that all rows. columns, and diagonals add up to the same sum.
Curated OER
Same and Different
For this mathematics worksheet, students first complete the tens place and then add the rest. Then they continue the patterns and compare each column. Students also fill in the missing addends and solve various word problems by writing a...
Math Salamanders Ltd.
Column Addition (No Carrying)—Three Digits 1
For this column, students solve 13 problems by adding three digits without carrying the worksheet. They add the ones, then the tens, and then the hundreds of columns.
Curated OER
Adding Greater Numbers
In this adding greater numbers learning exercise, students solve 13 problems in which four numbers are added in a column. Most numbers are four or five digits; students will need to regroup more than once.