New Zealand Ministry of Education
Addition and Subtraction Pick n Mix
Teach your class how to mentally solve whole number addition and subtraction problems using compensation from tidy numbers including equal additions. They use appropriate recording techniques and predict the usefulness of strategies for...
Curated OER
Using Compensation in Math
In this using compensation in math worksheet, 6th graders answer eight questions about using compensation in addition and subtraction problems.
Curated OER
Make it Easier-- Add, then Take
In this math worksheet, students learn a mental math strategy in addition called compensation. When adding a number such as 29, students learn to add 30, then take 1 away. Students solve 25 problems in which they round to the nearest...
Birdville Independent School District
Friendly Numbers
There are a number of different strategies young mathematicians can use when adding two-digit numbers. This instructional activity focuses on making addition easier by rounding the addends to friendly numbers, with the resulting sum...
Curated OER
Addition and Subtraction Pick n Mix 2
Fourth graders practice a wide range of strategies for solving addition and subtraction problems containing decimal fractions. They add and subtract fractions, decimals and integers while generalizing the properties of operations with...
Curated OER
Addition Strategies: Compensation
In this math worksheet, students learn the addition strategy of compensation: adding an easy number like 10, 20 or 30 and then subtracting a very small number like 1 or 2. Students solve 12 problems on the page.
Curated OER
The Part-Adder 2
Third graders use mental-math strategies to solve two-digit plus two-digit addition problems. They observe and discuss online demonstrations, solve word problems as a class, and independently solve problems and describe their solutions...
Curated OER
Add 29, 39, 49 To Any 2-Digit Number
In this addition worksheet, students solve 18 problems in which the number 29, 39, or 49 is added to a two digit number. There are no hints or examples. Problems are in horizontal format for mental math.
Heritage Foundation
The Office of the Executive
An executive is not just a leader of a company; you can also use the term to describe the president of the United States. The ninth part of a 20-part unit teaches high schoolers about the importance of the executive branch and the...
Curated OER
Mental Math: Addition and Subtraction
Fourth graders exercise their minds in completing mental math skills of adding and subtracting by making multiplies of ten. They compute problems involving multiplication and division of whole numbers and addition and subtraction of...
Curated OER
Money Management: Lesson 2 - Benefits of the Job
Students explore the concept of fringe benefits and the emphasis that should be placed upon them when considering a job. They discuss Worker's Compensation, unemployment insurance, and Social Security benefits. In addition, students...
University of Oklahoma
Developing My Resources
Learners with special needs create Summary of Performance (SOP), a written document which describes their disability, its impact on their daily life, ways they have learned to compensate, their personal strengths, and their goals. The...
Curated OER
Alternative Algorithms
Analyze algorithms for computing with rational numbers and develop fluency in their use with your math class. They work individually to solve the problems on the "Alternative Algorithms" sheet. Then, they analyze the appropriateness of...
Curated OER
Mental Math Strategies
In this mental math learning exercise, learners read an information box that explains how to use breaking apart or compensation to solve addition or subtraction problems. Students add or subtract using mental math in 8 examples.
Curated OER
Add 19 to Any 2-Digit Number
In this addition activity, students solve 18 problems in which the number 19 is added to a two-digit number. No hints or examples are provided.
Curated OER
Decimal Fractions
Students use rounding and compensating with whole numbers and explain how to use the empty number line to show additions and subtractions. They round and compensate in relation to decimal subtraction
Background
Curated OER
Mathematical Roadmaps
Second graders observe how a sample math problem is solved on the overhead. They work in small groups to develop a strategy for solving another problem using counters as well as a large sheet of paper to write down their explanation of...
Curated OER
Lesson Plan: Spain has its own immigration issues. How does it compare to ours?
Students investigate the issue of immigration in North Carolina and Spain. They compare/contrast immigration in both and exchange opinions about possible solutions. In addition, they write an essay proposing North Carolina solutions...
Curated OER
The Part-adder 1
Second graders investigate the addition of whole numbers. They mentally perform calculations involving addition and subtraction. They make sensible estimates and check the reasonableness of answers.
Curated OER
Ready, Set, Drift!
Learners define data, recover data from the Internet, and use information they obtain to solve problems. In this investigative lesson students answer questions on a worksheet and demonstrate the use of a maneuvering board in solving...
Curated OER
Beach Vocabulary Word Jumble
In this word jumble worksheet, students unscramble the letters to spell words related to summer. Students spell 20 words and use the word bank for help.
Curated OER
Baseball word jumble
In this baseball worksheet, students unscramble the words that represent vocabulary about baseball. Students unscramble 20 words about baseball.
Curated OER
Beach Vocabulary Word Jumble
In this beach vocabulary worksheet, students unscramble the letters to spell 20 words pertaining to the beach. There is a word box.
Curated OER
Mental Math Methods
In this mental math worksheet, students use mental math methods to solve problems. Students complete 1 addition, 1 multiplication, and 1 subtraction problem using these methods.