Illustrative Mathematics
Movie tickets
This is a good Common Core question that relates inflation to operations with decimals and rounding. Young learners are asked to find out if an amount of money can purchase the same amount of movie tickets in 2012 as it did in 1987. They...
Illustrative Mathematics
Half of a Recipe
Kids love to cook! What is a better place to learn mixed numbers than with a recipe? It is up to learners to decide how they want to divide this recipe in half. They may choose to model the mixed number and then divide the model by two....
Illustrative Mathematics
Margie Buys Apples
One of the most common, everyday applications of math is dealing with money. This single problem calculating how much change Margie receives is more involved than it appears at first glance. An understanding of how fractions and decimals...
Illustrative Mathematics
Gifts from Grandma, Variation 3
There are three money word problems in this activity, each one is set in the same context. The first asks what was the total amount grandma spent, the second how many grandchildren grandma has, and the third asks how much grandma spent...
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
Converting Decimal Representations of Rational Numbers to Fraction Representations
A rational number is a ratio of two integers. Discuss with your class how to convert the rational numbers of repeating decimals to fractions. A good commentary on letting x equal the repeating decimal and multiplying each side of...
Curated OER
Drinking Juice
Pictures, number lines, decimal equivalents, or Cuisenaire rods can be used to show insight into the meaning of multiplying fractions.Here, Alisa drinks 3/4 of 1/2 liter of juice. To find the total volume of the juice that Alisa...
Curated OER
The Value of Education
The real value of education is highlighted in more than one way on a instructional activity designed to not only add, subtract, multiply, and divide decimals to hundredths, but also to address the correlation between...
Illustrative Mathematics
Shrinking
Is Aunt Nancy shrinking? Find out by calculating with the average height women lose each year. The activity practices multiplying and dividing with decimals and rounding the final answer.
Illustrative Mathematics
Discounted Books
Adolescents love to shop, especially when an item is discounted. Here, shoppers only have a set amount of money to spend. Will they be able to make a purchase with the discount and tax added in? Percent discounts can be calculated...
Illustrative Mathematics
Reasoning about Multiplication and Division and Place Value, Part 2
The learner puts reasoning and estimation to work. The directions are to place a decimal in the answer to make the equation true. Pupils are to look at the two problems, one multiplication and one division, and estimate an answer. No...
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: Multiplying Decimals Whole Numbers
This website from The Math Page explains and defines how to multiply decimals. There is even a practice section at the very end of the lesson.
Math Is Fun
Math Is Fun: Multiplying Decimals
Learn how to multiply decimals by following simple steps and viewing several examples. Follow a link to see animals demonstrating decimal multiplication.
AAA Math
Aaa Math: Multiplying Thousandths by Tenths
This site explains how to multiply decimals, thousandths by tenths. Includes games to practice this skill.
AAA Math
Aaa Math: Multiplying Thousandths by Hundredths
This site explains how to multiply decimals: thousandths by hundredths. Offers games to practice this skill.
AAA Math
Aaa Math: Multiplying Thousandths by Thousandths
This site explains how to multiply decimals: thousandths by thousandths. Includes games to practice this skill.
Other
Kid's Page Archive: Free Printable Math Worksheets
Great source for math worksheets on all four whole number operations, fractions, and miscellaneous arithmetic topics. Could be used to assess basic arithmetic skills for areas that need remediation.
AAA Math
Aaa Math: All About Multiplication
A comprehensive tutorial from AAA Math that includes multiplication facts, multiplying numbers, multiplying fractions, multiplying decimals and properties of multiplication. Games and practice exercises are part of this lesson.
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: Multiplying and Dividing by Powers of 10: The Meaning of Percent
This excellent math resource explains and defines the meaning of percent. Multiplying and dividing by a power of 10 is incorporated as a preview to understanding scientific notation.
Math Fact Cafe
Math Fact Cafe
This site provides math fact sheets and flashcards for parents and teachers. Access hundreds of pre-generated math sheets, or create custom sheets to meet your own special needs.
Math Is Fun
Math Is Fun: Convert Decimals to Fractions
Learn how to convert decimals to fractions by viewing simple steps and several examples. At the bottom of this page, follow links to more on fractions on decimals: Introduction to Decimals," "Converting Fractions to Decimals,"...
Hopelink
Hopelink: Teaching Percentages
Students can brush up on percentage skills with this lesson and calculate percentages using the "Percent Tricks method." For students to successfully use this method, they must have the ability to multiply and divide whole numbers.
OnlineMathLearning.com
Online Math Learning: Multiplying and Dividing Positive & Negative Decimals
An interactive worksheet for practice in the multiplication and division of decimals with positive and negative signs.
Discovery Education
Discovery Education: Web Math: Convert Regular Decimals to Scientific Notation
This site gives an answer and explanation for any conversion requested by the user.