Handout
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West Contra Costa Unified School District

Subtracting Numbers

For Students K - 6th Standards
Give families the information needed to support their child in the mastering of subtracting numbers with a two page reference sheet offering detailed descriptions and labeled examples. 
Assessment
Illustrative Mathematics

The Pet Snake

For Students 1st Standards
Assess how long the class pet snake grew and how long it was when it started growing with a short learning exercise. Learners use addition and subtraction strategies with measurements to answer three questions.
Assessment
Noyce Foundation

Granny’s Balloon Trip

For Teachers 5th - 8th Standards
Take flight with a fun activity focused on graphing data on a coordinate plane. As learners study the data for Granny's hot-air balloon trip, including the time of day and the distance of the balloon from the ground, they practice...
Lesson Plan
Virginia Department of Education

Rational Expressions

For Students 9th - 12th Standards
Demonstrate the progression of operations with rational expressions through a multi-day lesson, equipped with worksheets for each day. High schoolers develop the concepts needed to perform operations with rational expressions....
Worksheet
Curated OER

Subtraction and Unknown Addends

For Students 1st - 3rd
The missing addend strategy is helpful to young mathematicians approaching subtraction. This worksheet walks learners through the required steps, solving the problems with them. They examine situations with...
Worksheet
Curated OER

Subtraction: Decimals

For Students 4th - 7th Standards
In this decimal subtraction worksheet, students solve 15 problems that require them to subtract decimal numbers with 1-5 digits.
Worksheet
Curated OER

Mental Math Ideas

For Students 3rd - 6th
In this mental math worksheet, students complete the multiplication and subtraction problems where they use the strategy "subtract all digits from 9 except the last one from 10". Students complete 26 problems.
Worksheet
Curated OER

Subtraction: Two Digit by Two Digit - No Regrouping

For Students 2nd Standards
In this subtraction worksheet, 2nd graders find the differences in 30 two digit by two digit problems in which they do not have to regroup.
Lesson Plan
Curated OER

Plus, Minus and Interesting

For Teachers 2nd - 10th
Students identify the main ideas or topics of a lesson or unit using the plus, minus and interesting graphic organizer. In this main idea or topic lesson, students examine the use of the PMI graphic organizer. They describe the item they...
Worksheet
Curated OER

Word Problem Solving Strategies

For Students 6th
In this word problem solving strategies worksheet, 6th graders solve and complete 11 different problems and questions related to identifying word problems. First, they explain what the problem is telling them to do and what is important....
Lesson Plan
Curated OER

Two-Step Problems and Money Concepts

For Teachers 3rd - 6th
Elementary schoolers solve two-step equations and practice money concepts. They solve multi-step addition and subtraction contextual problems and apply money concepts to real life situations. Pupils use pictures and counters to help them...
Worksheet
Curated OER

Add and Subtract within 20

For Students 1st - 2nd
The sums and differences only reach 20 in this arithmetic worksheet. Scholars answer 10 simple number sentences, some involving two numbers and others with three. They choose the correct answer from a list on the right. There are the...
PPT
Curated OER

Adding and Subtracting Decimals

For Teachers 3rd - 5th
The addition and subtraction of decimals is a relatively simple process. The most important thing to remember is to have all of the decimal points lined up. This presentation gives that strategy, plus some others to use when performing...
Worksheet
Curated OER

Add and Subtract within 1000

For Students 2nd - 4th
Solve these true equations; scholars examine three-digit addends, subtrahends, and minuends in these equations that are each missing one number. There is a list of possible answers to choose from, so decide whether or not you want to...
Lesson Plan
Curated OER

Pattern Puzzles

For Teachers 1st - 2nd
A short video introduces place value in addition and subtraction. As a class, your students identify all even numbers up to one hundred and explain the pattern. They use addition strategies to fill in the missing numbers on the number grid.
Lesson Plan
NTTI

Putting Together Ten

For Teachers 1st - 2nd Standards
Groups explore sets of 10 items in two varieties (i.e. 3 white buttons and 7 black ones, or 5 bears and 5 bunnies). They brainstorm about their objects, write math sentences to represent what they have, and report their discoveries...
Activity
Florida Center for Instructional Technology

A Human Number Line: Teacher Notes

For Teachers 4th - 6th Standards
Twenty-one pieces of tagboard can lead your class to a greater understanding of integers when you use them to form a human number line. After creating this math tool, two strategies for adding and subtracting will have your...
Lesson Plan
Curated OER

Back-To-School Shopping

For Teachers 5th
Fifth graders estimate the prices of items to be bought for back to school. They use catalogs and/or advertisements to research the cost of each of the items. They use problem solving strategies and a spreadsheet template to determine...
Lesson Plan
Curated OER

A Fictional History of Place Value

For Teachers 2nd - 4th Standards
Your class can explore standard and expanded notation, as well as computation with regrouping. They listen to a make-believe story about cavemen and the origin of numerals and place value. Then apply what they learned about renaming and...
Lesson Plan
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EngageNY

Putting It All Together

For Students 10th - 12th Standards
Shuffle 'em up and deal! Learners practice operations with polynomials using cards they pass around the room. The activity works with pairs or individuals, so it offers great flexibility. This is the fifth installment in a series of 42...
Worksheet
Curated OER

Two Word Problems

For Students 1st - 2nd
The class solves two basic word problems that requires addition or subtraction. They are encouraged to draw a picture that illustrates each problem.
Interactive
PHET

Make a Ten

For Students 1st - 2nd Standards
Rate the resource as a perfect 10. Pupils use an interactive to help add and subtract numbers. They first explore how to express whole numbers using hundreds, tens, and ones, then explore how to add whole numbers by combining to make...
Lesson Plan
EngageNY

When Can We Reverse a Transformation? 3

For Teachers 11th - 12th Standards
When working with matrix multiplication, it all comes back around. The 31st portion of the unit is the third lesson on inverse matrices. The resource reviews the concepts of inverses and how to find them from the previous two lessons....
Organizer
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Curriculum Corner

Problem Solving Cards

For Students 3rd Standards
Twelve cards and a worksheet make up an activity designed to reinforce problem solving skills. Scholars read and solve a variety of word problems using a graphic organizer to show their work.