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...
Illustrative Mathematics
Equivalent fractions approach to non-repeating decimals
Trying to get your class to think of decimals as fractions and vice versa can lead to interesting discussions. After all, we can usually understand quickly that 1/4 is .25 but why is 1/7 not so easy to convert? This activity looks...
Curated OER
Nonterminating Decimals Worksheet
Use this decimals activity to have learners solve six problems in which two decimal numbers are presented. Pupils evaluate the two decimal numbers and then determine a number that would come in between the two given numbers.
Curated OER
Rational and Irrational Numbers
Here is a rational and irrational numbers worksheet in which learners identify 10 different expressions related to various types of numbers. They determine whether each expression given is a rational or irrational number.
Curated OER
Infinity
Students engage in a lesson that is concerned with the concept of infinity as defined in a series by geometry. The lesson integrates the use of philosophy to help them comprehend how infinity can possibly mean while investigating the...
University of Saskatchewan (Canada)
University of Saskatchewan: Decimal Expansions
The University of Saskatchewan's Department of Mathematics and Statistics provides high school students with an online tutorial on decimal expansions. It begins with a focus on decimal representation of real numbers, followed by how this...
Texas Instruments
Texas Instruments: Real Numbers
Students learn to identify real numbers as rational numbers and irrational numbers. They review rational numbers as repeating decimals, and irrational numbers as non-repeating decimals. They also review commutative, associative,...
Texas Instruments
Texas Instruments: Fractions to Decimal Form
This program and activity sheets allow teachers and students to explore both terminated and repeating decimal forms of any fraction (within limits). This version 1.0 allows for one conversion but can be rerun indefinitely.
Texas Instruments
Texas Instruments: Rational Numbers
Students review the definition of rational numbers as ratios and as terminating and repeating decimals. They also examine the reciprocal property of rational numbers and operations with rational numbers.
Common Core Sheets
Common Core Sheets: The Number System 8.ns.1 Worksheets
Print or create worksheets to assess students' understanding of rational and irrational numbers.
Common Core Sheets
Common Core Sheets: The Number System 7.ns.2d Worksheets
Print or create worksheets or flashcards to assess students' understanding of repeating decimals.
Quia
Ixl Learning: Dividing Decimals
Brush up on your math skills relating to dividing decimals then try some practice problems to test your understanding.
The Math League
The Math League: Fractions
This tutorial covers all types of fractions with simple explanations on how to work with them.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Terminating & Repeating Decimals
Find a quick, concise explanation of both terminating and repeating decimals. An example of each is given and clearly explained.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Why Repeating Decimals Are Rational?
Math Forum response to why all repeating decimals are rational numbers, including examples and concise explanations.
Education Place
Houghton Mifflin: Eduplace: Extra Practice Quiz Repeating Decimals 1
Practice changing various fractions to repeating decimals. Read the interactive quiz rules and then click on the "Begin" ticket. If you answer incorrectly you get one more chance to try again then you are told the correct answer. See how...
Calculator Soup
Calculator Soup: Decimal to Fraction Calculator
This calculator converts a decimal number to a fraction or a decimal number to a mixed number. For repeating decimals enter how many decimal places in your decimal number repeat.