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West Contra Costa Unified School District
Subtracting Numbers
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.
Illustrative Mathematics
The Pet Snake
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.
Noyce Foundation
Granny’s Balloon Trip
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...
Virginia Department of Education
Rational Expressions
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....
Curated OER
Subtraction and Unknown Addends
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...
Curated OER
Subtraction: Decimals
In this decimal subtraction worksheet, students solve 15 problems that require them to subtract decimal numbers with 1-5 digits.
Curated OER
Mental Math Ideas
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.
Curated OER
Subtraction: Two Digit by Two Digit - No Regrouping
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.
Curated OER
Plus, Minus and Interesting
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...
Curated OER
Word Problem Solving Strategies
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....
Curated OER
Two-Step Problems and Money Concepts
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...
Curated OER
Add and Subtract within 20
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...
Curated OER
Adding and Subtracting Decimals
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...
Curated OER
Add and Subtract within 1000
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...
Curated OER
Pattern Puzzles
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.
NTTI
Putting Together Ten
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...
Florida Center for Instructional Technology
A Human Number Line: Teacher Notes
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...
Curated OER
Back-To-School Shopping
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...
Curated OER
A Fictional History of Place Value
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...
EngageNY
Putting It All Together
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...
Curated OER
Two Word Problems
The class solves two basic word problems that requires addition or subtraction. They are encouraged to draw a picture that illustrates each problem.
PHET
Make a Ten
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...
EngageNY
When Can We Reverse a Transformation? 3
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....
Curriculum Corner
Problem Solving Cards
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.