EngageNY
Adding and Subtracting Rational Expressions
There's a fine line between a numerator and a denominator! Learners find common denominators in order to add and subtract rational expressions. Examples include addition, subtraction, and complex fractions.
Houghton Mifflin Harcourt
Intensive Math
Three chapters worth of integer, fraction, and decimal problems to give you every type of question your learners need to be a successful mathematician. Thankfully the work has been done for you and this is a huge resource full of...
Curated OER
Mentally Add and Subtract 10 or 100
Get your mental mathletes in top form with this number sequence worksheet! They must add or subtract 10 from a number to complete these number lines, finding the missing three-digit numeral from a list of answers. Encourage verbal or...
Curated OER
Adding by 3's
In this adding by 3's worksheet, students start with different numbers in number lines and count by 3's to the end number in the line. Students complete 14 number lines.
Curated OER
Adding by 3's
In this adding by 3's instructional activity, students fill in the blanks to number lines that are adding by 3's but all starting with different 2 digit numbers. Students complete 14 number lines.
Curated OER
A Human Number Line
Eighth graders act out a number line using integers -10 to 10 on large cards. They practice addition and subtraction of these integers to gain explain the relative size of numbers.
Curated OER
Adding by 2's
For this adding by 2's worksheet, students start with a 2 digit number and count by 2's in the number lines. Students complete 14 number lines.
Curated OER
Number Line Circles
In this number line worksheet, students use a number line between with dots above each number to practice counting or adding numbers 1 through 10. Odd numbered dots are colored red.
Math Mammoth
Add & Subtract Integers Fact Sheet
Guide young mathematicians through the crazy world of negative numbers with a handy reference document. Offering clear instructions for adding and subtracting positive and negative integers, this resource is a great way to support...
Curated OER
Adding and Subtracting from 10
Here is a nicely designed worksheet on adding and taking away from ten. Learners complete the simple problems with the help of a number line that appears at the top of the page. Some of the equations have a missing addend, but do have...
Curated OER
Distances Between Houses
This resource sneaks in the math so your learners will be adding and subtracting positive and negatives on a number line while thinking they are mapping out houses. The activity starts by putting houses the appropriate distance away from...
American Chemical Society
Investigating the Line
Note that this lesson is best paired with the preceding lesson in the unit. In that lesson, elementary physical scientists observed that the color coating of M&Ms® candies do not mix when dissolved off of the chocolate surface. Now...
Curated OER
Number Rods
Working in a math center or an "I finished early" work station, young mathematicians will match in sequence pre-set-up rods of unifix cubes to numbers on a number line. To help differentiate tens from ones, use different colors to...
Curated OER
Integers - Objects Model
Sixth and seventh graders solve 19 various types of problems related to integers as objects models. They write an integer that corresponds to each letter on a number line and then, arrange the integers from least to greatest. Pupils also...
Curated OER
Number Addition Race
Practice basic addition facts and measuring skills. In this addition and measurement instructional activity, students are provided with drywall tape and work in groups of four at a long table. Partners take turns generating addends and...
Kenan Fellows
Multivariate Least Squares Regression Model with Variable Selection
The risk of contracting an infection in the hospital is low, but it does happen. Learn what risk factors have the highest correlation with hospital-acquired infections in the final lesson of a three-part series. Using the open source R...
Curated OER
Number: Negative Numbers
Pupils solve numerical equations with negative numbers. They use the number line to compare the relationship of numbers greater than zero to those less than zero. They practice starting at various points on the number line and then...
DiscoverE
LIDAR: Mapping with Lasers
We would be lost without maps! How are they made? Introduce junior topographers to LIDAR technology with a fascinating activity. Set up a mock city, then have learners operate a laser measure to determine the shape of the landscape using...
Curated OER
6: Adding with Negative Numbers
In this adding negative numbers activity, students solve three multi-part short answer problems. Students add negative integers. Students evaluate addition and subtraction expressions for given values.
Curated OER
On Board with Numbers
In this number line worksheet, students use the number line to complete the train schedule, write equations for each schedule and write how they completed the schedule. Students complete 11 problems.
Fuel the Brain
Addition with Three Addends
Do you know how much of one activity that you did ALL day? Through addition, your learners will determine how much dancing and how much basketball Morgan and Anna did over the course of one day. They will have to create a number sentence...
Education Development Center
Logic of Fractions
Before diving into operations with fractions, learners discover the foundation of fractions and how they interact with one another. Exactly as the title says, logic of fractions is the main goal of a resource that shows pupils how...
National Security Agency
Integers: Quick, Fun and Easy To Learn
A good complement to any integers unit contains a three-day lesson plan about positive and negative integers, adding and subtracting integers, and how to find the additive inverse. Additionally, it provides all necessary worksheets and...
Los Angeles Valley College
Adding and Subtracting Integers
Practice adding and subtracting positive and negative numbers with a forty-problem integers worksheet.