Activity
Illustrative Mathematics

Hitting the Target Number

For Students 2nd Standards
Make combinations to reach the target. Learners play a game to add and subtract numbers between 0 and 10 to reach a target number between 10 through 20. Teachers use the game to help pupils learn efficient ways to add and subtract within...
Worksheet
Curated OER

Identifying Patterns

For Students 4th
Although this fractions exercise may seem difficult at first, it's really quite simple and intended for beginners to mixed numbers. Scholars complete 15 number sequences by adding two or three mixed numbers or decimal numbers. However,...
Lesson Plan
Curated OER

Problem Solvers

For Teachers 5th - 6th
Fifth and sixth graders compare decimals to the place-value structure in the base-ten number system. They represent fractions as parts of unit wholes, as parts of a set, as locations on a number line, and as divisions of whole numbers....
Lesson Plan
Curated OER

It Counts

For Teachers K - 2nd
Students classify and compare plants using specific information, observations, and numbers. In this mathematical inquiry lesson, students use plant characteristics to describe, compare, and classify them. They attempt to develop a system...
Lesson Plan
Illustrative Mathematics

Bookstore Account

For Teachers 6th - 8th Standards
We use debt often to describe negative numbers and your learners will be able to see how it translates into math. They will be asked to go through a series of transactions and make simple equations for each one, following it with a...
Lesson Plan
Curated OER

Division of Decimals

For Teachers 4th - 6th
Work with the class to investigate the concept of dividing decimals. They will use a variety of problem-solving skills in order to practice the operation of division. The teacher can use the dialogue to guide learners through the various...
Interactive
CK-12 Foundation

Add and Subtract Decimals with Front-End Estimation: Wooden Beams

For Students 6th - 8th Standards
A six-question interactive tasks mathematicians to solve addition and subtraction problems using front-end estimation. Question types consist of multiple-choice and true or false. A set of wooden beams that can be measured using moveable...
Worksheet
Curated OER

Subtract a Single Digit from a 2-Digit Number

For Students 1st - 2nd
In this subtraction worksheet, students complete a set of 10 problems, subtracting single-digit numbers from double-digit numbers. An answer key is given.
Worksheet
Curated OER

Subtracting Decimals Worksheet

For Students 3rd - 6th
In this subtraction instructional activity, students subtract numbers containing decimals. Students complete 25 subtraction of decimal problems.
PPT
Curated OER

Decomposition, Numbers, and Subtraction

For Teachers 2nd - 3rd
Wonderful for visual learners, this presentation provides images of 10's and 1's cubes, to reinforce the concept of subtraction. Learners practice along with the teacher as 10's and 1's cubes are scratched off.  
Worksheet
Curated OER

Add and Subtract within 1000

For Students 1st - 3rd
Get some good practice with triple-digit addition and subtraction with these 10 problems. Only one addition problem requires regrouping, and none of the subtraction problems require borrowing. Question four turns into a four-digit...
Worksheet
Curated OER

Add and Subtract Equations

For Students K - 1st
One of these addition number sentences is incorrect: which one is it? Beginning mathematicians examine two simple equations, circling the one that is correct. An explanation on the bottom walks them through the processing, including...
Worksheet
Curated OER

Add and Subtract within 1000

For Students 2nd - 3rd
There are some missing parts in these addition and subtraction problems. Scholars start by completing two number sentences, each involving all three-digit numbers. Then, they examine another number to determine the value of the tens...
Lesson Plan
Curated OER

Absolute Value and Basic Operations With Real Numbers

For Teachers 6th - 8th
Middle schoolers investigate the mathematical concept of absolute value by counting the number of steps taken in two directions. Using the number line the teacher can note how they can forward and backward without changing the absolute...
Interactive
CK-12 Foundation

Add and Subtract Three Mixed Numbers: Walking to School

For Students 6th - 8th Standards
Mixed numbers are the focus of a five-question interactive. Scholars move fraction pieces into strips and equations to find solutions. Questions challenge participants with multiple-choice, a true or false, and one discussion.
Interactive
Curated OER

Subtracting Mixed Numbers

For Students 3rd - 6th
For this math worksheet, students subtract mixed numbers. Students find common denominators. They subtract the fractions and whole numbers.
Worksheet
Curated OER

Subtracting 9 From a 2 Digit Number

For Students 3rd
In this subtraction worksheet, 3rd graders subtract 9 from two digit numbers. Students must regroup to complete the problems. There are 2 pages with 10 problems on each page.
Worksheet
Curated OER

Money Subtraction

For Students 3rd - 4th
In this money subtraction worksheet, students subtract four digit numbers that represent dollars and cents. Students subtract 20 problems of four digit numbers.
Lesson Plan
Curated OER

Adding and Subtracting

For Teachers K - 1st
Students will add and subtract numbers less than 100 as well as understand and use the inverse relationship between addition and subtraction. They compose/decompose numbers up to 10 and understand a variety of situations in which...
Worksheet
Curated OER

Subtracting Two-Digits

For Students 1st - 3rd
In this finding the differences worksheet, students subtract two-digit numerals from two-digits with some regrouping. Students solve 18 problems.
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...
Worksheet
McGraw Hill

Adding and Subtracting Mixed Numbers

For Students 4th - 8th
Adding and subtracting mixed numbers will be a breeze with this guided worksheet packet. Learners work through examples outlining each step including rewriting mixed numbers as improper fractions, adding numerators, and rewriting the sum...
Lesson Plan
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EngageNY

Adding and Subtracting Rational Expressions

For Students 10th - 12th Standards
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.
Unit Plan
Mathematics Vision Project

Module 3: Numbers and Operations

For Students 10th - 12th Standards
Bring some concrete reasoning to the skills of multiplying and combining terms. Using various strategies, the six activities in the module provide practice for the skills of adding, subtracting, multiplying, and diving polynomials. The...

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