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Multiplying Decimals Teacher Resources
Find Multiplying Decimals educational ideas and activities
In this math instructional activity, students practice multiplication of decimals. Students begin by multiplying whole numbers by decimals, then decimal numbers by decimals, up to the thousandths place. The problems are written both in horizontal and vertical form. Multiplication (mental) of decimals by 10, 100 and 1000 are also included. Hints and clues are provided.
There are two Khan Academy videos on representing numbers as decimals, percents, and fractions. This one shows students how to represent a fraction as a decimal and a percent. Sal demonstrates the process used to convert the fraction 7/8 into a decimal and then a percent. This presentation is very well done and would be great at an independent work station or as homework support.
Put your learners' decimal skills to the test with these five word problems. With space for students to write their work, the word problems contain addition and multiplication problems with money and measurement units. Use this resource as a quiz or an in-class activity to fully assess your class's comprehension.
It's all about decimals in these word problems, which have scholars apply math to scenarios they will likely come across later in life. Working with multi-digit numbers and decimals to the hundredths place, learners must determine the operation for each of six problems and show their work in the designated place. They use subtraction, multiplication, and division to solve these, and can reference the two examples if they need to.
Explore all things decimal in this thorough series of introduction activities. Including scripting for the teacher and detailed descriptions and examples, the plan begins by reviewing the basics of place value and writing fractions as decimals, works through rounding, adding, subtracting, multiplying and dividing numbers with decimals, and culminates in word problems and linear equations involving decimals.
Have your class observe and demonstrate how to multiply and divide decimals. They observe the teacher model examples of dividing and multiplying decimals, and independently complete a worksheet. They identify any patterns they observe and discussing the answers as a class.
Fifth graders solve 35 multiplication equations, all of which have one number with a decimal multiplied by a single-digit number. The decimal numbers all are single-digit with a decimal only to the tenths place, so this is ideal for beginners to this skill. They can reference the three examples, as well. Consider numbering these equations before copying to make review easier.
Multiplying decimal numbers isn't that much different than multiplying whole numbers. If you need a little extra support, this video may help. Sal shows how to multiply 23.12 by 0.5. He takes care to line up the decimal points, regroup, and place the decimal in the proper place when he finishes his computation.
Mathematicians make representations of fractional parts of a whole and learn that a decimal is another way to represent a fractional part. Understanding is extended by comparing and ordering fractions and decimals on a number line. This high-quality resoucre comes complete with student handouts. Make sure to consider it for addressing Common Core standards in math.
One of the most practical ways to teach about percentages is to use the real-life example of "sale" or "discount" pricing. This presentation poses many of these type of problems for young mathematicians who are trying to master the technique. There are problems where they must calculate interest on a purchase and the commission earned by a salesman who makes a percentage on each sale. Very good!
Seventh and eighth graders study the techniques used to multiply and divide fractions, simple radical forms, and numbers in scientific notation. They define the number forms before working with them in a guided practice exercise. Pupils complete the lesson by completing independent student practice in this introductory lesson.
Seventh and eighth graders solve math problems where they multiply positive and negative integers. In this multiplication lesson plan, learners use slate boards to complete problems. The step-by-step plan tells you what to write and say to the class as you teach this foundational skill.
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 such equation by a power of 10 or 10r, where r is the repeating segment.
Eighth graders multiply and divide fractions, decimals, percents, and exponents. In addition to working problems in standard notation, 8th graders solve problems by multiplying and dividing numbers in scientific notation. Afterward, students play a "Target Multiplication" game. They complete worksheets containing all types of problems discussed.
Ninth graders explore multiplying and dividing integers. They take notes as the teacher demonstrates multiplying and dividing decimal numbers. They practice converting between decimals and fractions. After guided practice by the teacher, 9th graders practice dividing and multiplying integers and rounding off answers to the appropriate place value.