Curated OER
Repeating Decimal as Approximation
You are used to teaching repeating decimals with bar notation that keeps us from writing that number over and over again; now teach what the over and over again represents. This activity allows your mathematicians to explore the infinite...
Curated OER
Doing Dewey Decimal
Students examine the Dewey Decimal System and locate books in the nonfiction section. They examine a shelf of books and try to determine how the books are arranged, then watch a short video "Media Mania." Students then match construction...
EngageNY
Decimal Expansions of Fractions, Part 2
Develop your pupils' understanding of fractions and their decimal equivalence using the 12th lesson in this series. Scholars learn an alternative to long division that results in converting fractions to decimals that emphasize fractional...
EngageNY
The Decimal Expansion of Some Irrational Numbers
Develop a definition of irrational numbers through an exploration of square roots. The 11th lesson plan in this series of 25 asks scholars to estimate the value of a square root. Learners observe as the estimation extends further and...
Curated OER
Decimal Place Value Chart
In this decimal place value chart instructional activity, students work independently to fill in the blanks on the chart so that the numbers equal out correctly and the missing words are stated correctly.
Curated OER
Number: Rounding Off and Approximating
Young mathematicians access a website that leads them through three activities that enable them to practice their rounding and estimation skills when it comes to numbers and math word problems. There is also a very good worksheet...
Illustrative Mathematics
Calculating and Rounding Numbers
Mathematicians need to know that not all numbers are rational. We approximate irrational number with rational numbers. That is why a calculator may be misleading. This task give learners an opportunity to see how rounding a number and...
Chapman University
Exact Values Poster
Go to infinity and beyond and see what a repeating decimal actually looks like as it goes on and on and on and on. The poster uses rational numbers, imperfect squares, and the always popular π.
Math eBook
Binary to Decimal Conversion
In this decimal conversion learning exercise, students convert binary numbers to decimal numbers. This two-page learning exercise contains approximately 10 problems. This interactive learning exercise may be completed on-line or printed...
Math eBook
Decimal to Octal Conversion
For this conversion activity, students convert from decimal units to octal. This two-page activity contains approximately 20 problems. These problems may be completed on-line or published in printed format.
Math eBook
Hexadecimal to Decimal Conversion
In this conversion worksheet, students convert hexadecimal to decimal numbers. This two-page worksheet contains approximately 20 problems. This interactive worksheet may be completed on-line or printed.
Curated OER
Decimals and Percents
For this decimals and percents worksheet, 8th graders solve 26 different types of problems that include expressing numbers as a decimal and a percent. Then they change each number to fractions and determine the unknown number for each...
EngageNY
What Is Area?
What if I can no longer justify area by counting squares? Lead a class discussion to find the area of a rectangular region with irrational side lengths. The class continues on with the idea of lower approximations and upper...
Curated OER
Investigation- More than 4- Less than 5
Seventh graders practice combining decimals and fractions to find sums which are either greater than 4 or less than 5. Students first approximate the value of each fraction and decimal, then they look for combinations to fit the guidelines.
Curated OER
Converting Fractions, Decimals, and Percents
In this conversion worksheet, pupils practice converting fractions, decimals and percents. This one-page worksheet contains approximately 30 problems.
Curated OER
Regression Analysis
In this regression analysis worksheet, 9th graders solve 10 different word problems related to regression analysis. First, they use the information given to find a suitable function to model the data. Then, students use the model to...
Curated OER
Building Tolerance for Poverty in Math
Students explore approximate and exact solutions. In this interdisciplinary lesson, 6th graders will be placed in 'family groups' to create a budget that is subject to random events as chosen from the 'things happen' box. This lesson...
Curated OER
Decimals, Percent and Scientific Notation
In this decimals, percent and scientific notation worksheet, 9th graders solve various types of problems that range from shading an indicated part of a shape to calculating using scientific notation to express their answer. They express...
Curated OER
Ordering Rational Numbers and Finding Their Approximate
Middle schoolers explore the concept of ordering rational numbers on a number line. They represent rational numbers as decimals and percents. Pupils create a foldable about converting fractions to decimals to percents, and use a...
Curated OER
Multiplying By Negative Powers of Ten (D)
In this multiplication worksheet, learners multiply two-digit whole numbers by decimal numbers ranging from 1 to .0001. This two-page worksheet contains approximately 50 problems, with answers.
Curated OER
Arithmetic: Division of Decimals
For this arithmetic worksheet, students mentally divide whole numbers and decimals. They translate word problems to equations and then solve them. This six-page worksheet contains approximately 70 problems. Answers are provided on the...
University of Utah
Rational and Irrational Numbers
Conquer any irrational fears you might have of irrational numbers. As class members investigate how to represent numbers geometrically, they learn about rational and irrational numbers, including approximating and ordering rational...
Charleston School District
Estimating Values of Expressions
You can't evaluate an irrational root expression without a calculator—or can you? Scholars estimate the value of roots within an expression to approximate the value of the expression. Expressions include a mix of square roots and whole...
EngageNY
Mid-Module Assessment Task: Grade 8 Module 7
Assess pupil understanding of rational and irrational numbers with a mid-module assessment that is the 15th lesson in the 25-part series. The questions represent the objectives in the first half of the series. Topics include decimal...