Curated OER
Multiplying Decimals
For this math worksheet, 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...
Curated OER
Using Known Facts to Multiply and Divide Mentally
Building strong mental-math skills requires learners to have a strong number sense. They practice multiplying two and three-digit numbers in their heads using estimation or approximation. They estimate or round each number and then...
EngageNY
The Division Algorithm—Converting Decimal Division into Whole Number Division Using Mental Math
Make math much simpler with mental math methods. The 16th installment in a series of 21 looks at ways scholars can apply mental math to convert division problems into easier problems with the same quotient. Multiplying or dividing both...
CK-12 Foundation
Mental Math to Multiply by Whole Number Powers of Ten: The Rule for Tens
Eight questions challenge scholars to use mental math while multiplying whole numbers by powers of 10. A tool with bouncing decimals demonstrates how and where the decimal moves. Question types include several multiple-choice, a...
Curated OER
Multiplying a Number by 10
A cheery presentation on multiplying whole, and decimal numbers by 10. Learners are coached to simply add a zero to the number which is being multiplied by 10. An excellent way to pass along one of the all-time best mental math tricks.
Curated OER
Lesson 3: Number Sense
Learners solve word problems using number sense. They convert fractions to decimals and mixed numbers. Pupils determine if a given fraction is greater or less than another fraction, and order numbers on a number line.
Curated OER
Powers of Ten
In this powers of ten worksheet, 5th graders multiply and divide decimals by multiples of ten. They mentally solve simple problems containing powers of ten. This two-page worksheet contains 10 problems.
Curated OER
Fractions as Percentage and Decimals
For this fractions, percentages, and decimals worksheet, students solve 14 problems where they must convert back and forth. Students are given numbers in fraction, percentage, and decimal form and are asked to change their form.
Curated OER
Fractions and Percentages
In this fractions and percentages activity, students are given 4 mental test each with 8 problems including finding percentages, converting decimals and fractions to percentages, and adding, subtracting and multiplying fractions.
Curated OER
Metric Magic
Sixth and seventh graders construct a "metric machine" as a kinesthetic aide in converting from one unit to another in grams, liters, or meters. They complete a metric activity on the Internet and view about five minutes of a video on...
Curated OER
Fantastic Fraction Fudge
In order to create some tasty fudge, learners must adapt a recipe. Using a recipe for fudge, ingredients must be correctly converted using fractions. If one fraction is incorrect, the fudge will reveal it! Although you will only make one...
Curated OER
Let's Take a Trip!
Sixth graders plan a trip for a family of four choosing their travel plan by studying maps to decide upon a route and visiting Websites to get airline and travel schedules. They use ratios and proportions as well as converting fractions...
New Zealand Ministry of Education
Fraction Bar
Computing class members encounter use a digital learning tool called The Fraction Bar to multiply fractions with whole numbers. They do so by finding a given fraction of a number either on a number line or by calculating the answer with...
Curated OER
The Golden Students
Scholars view the video, "Donald Duck in Mathmagic Land," and discuss examples in nature which have proportions of the golden ratio. They measure and record different body lengths from a worksheet and convert the ratios to equivalent...
Curated OER
Making Change
Second graders explore how to incorporate a new type of technology, the cash register and/or a calculator, as a motivational tool for solving real life problems. They practice estimating money and counting back change from $20.00.
Curated OER
King Henry Did What?
Students convert between the different metric units after reading the Fairy Tale of King Henry. They measure various candies in a baggy using the width of their index finger. They record results to the nearest index finger width on a...
Curated OER
Projectile Motion
Students observe projectile motion and calculate the speed of a baseball based on the time and distance traveled. They record the time, measure the distance, and draw the path of the ball's travel on a data table.
Curated OER
Who Wants to Carry a Million?
Students, in groups, determine the volume of a box large enough to hold a million dollars. They calculate the dimensions of a bill and the volume of the money.
Curated OER
Whole Numbers
Student are assigned one of the sections on whole numbers. After reviewing the content, they teach their assigned sections to other class mates. They publish their findings on a PowerPoint slide show to use when they teach their section.
Curated OER
Recycling
Students relate recycling to waste reduction. In this science lesson plan, students talk about the environment and how recycling certain natural resources actually saves on energy. They also discuss what type of recycling causes...
CK-12 Foundation
Ck 12: Arithmetic: Mental Math to Multiply by Decimal Powers of Ten
[Free Registration/Login may be required to access all resource tools.] Use mental math to multiply by decimal powers of ten.