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CK-12 Foundation
Mental Math to Divide by Whole Number Powers of Ten: Mental Math to Divide Decimal Powers of Ten
Boost mental-math skills with an interactive that focuses on dividing whole numbers by powers of 10. Mathematicians solve five fill-in-the-blank and multiple-choice questions with help from a moveable decimal point in four example...
University of Minnesota
Fraction Operations and Initial Decimal Ideas
Add another strategy to the toolboxes of young mathematicians with this elementary math lesson on using number lines to add and subtract fractions.
CK-12 Foundation
Add and Subtract Decimal Numbers: Losing Little Bits
An interactive offers five questions that challenge scholars to subtract decimals. A diagram featuring a tree and birdhouse with moveable parts is designed to assist mathematicians in finding solutions. Types of questions include...
CK-12 Foundation
Decimal Multiplication: Reducing the Weight
Eight questions challenge mathematicians to multiply decimals. A color-coded tool with movable parts assist participants in answering word problems. Item response types include fill in the blank, multiple-choice, and a discussion. ...
EngageNY
Decimal Expansions of Fractions, Part 1
Is it possible to add infinitely long decimals? As pupils complete the examples in the ninth lesson of this 25-part series, they determine that adding these decimals cannot be done without error. Their task is then to determine the size...
CK-12 Foundation
Mental Math to Divide by Whole Number Powers of Ten: Bouncing Decimal Point
Five questions challenge mathematicians to divide whole numbers by powers of 10. A tool highlights how a bouncing decimal moves through the divisor. Question types include multiple choice and fill in the blank. A discussion question...
CK-12 Foundation
Numbers with Decimal Place Value: Battleship Decimals
Decimal place value is the topic of a Battleship themed-interactive. Scholars answer five questions—multiple-choice and true or false—while referencing a grid that acts as the board game. The practice concludes with a discussion...
CK-12 Foundation
Large Decimal Rounding to Decimal Representations: Weighing a Whale
An interactive challenges mathematicians to round large numbers with help from a large scale that measures the weight of a blue whale. The practie's five questions include multiple-choice, fill-in-the-blank, true or false, and an open...
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...
CK-12 Foundation
Decimals as Mixed Numbers
Five questions—multiple-choice, true or false, and a discussion—make up an interactive that focuses on decimals as mixed numbers. Moveable blocks assist scholars in finding solutions.
CK-12 Foundation
Estimation to Check Decimal Multiplication: Watering a Garden
Mathematicians solve six multiple-choice and true or false questions using their knowledge of estimation and multiplying decimals. The interactive provides a garden-themed tool that creates a visual aid of three watering cans to assist...
Raytheon
Adding and Subtracting Decimals
For this adding and subtracting decimals instructional activity, learners add and subtract numbers with decimals in word problems. Students complete 12 word problems.
EngageNY
Grade 5 Math Module 1, Topic D, Lesson 9
Introduces addition of decimals by using unit notation to represent the problem. Pupils use a place value chart to decompose the numbers and then add before connecting to the standard algorithm.
New Mexico State University
Monster School Bus
Load up the bus. Pupils play a game where they control a bus to pick up a certain number of monsters for school. Learners develop strategies to make sure they have a full load and score the most rewards. As scholars work through the...
Math Salamanders Ltd.
Adding Decimal Hundredths Sheet 3
In this decimal addition worksheet, learners complete a set of 60 problems, filling in the missing decimal numbers to complete equations using hundredths.
CK-12 Foundation
Decimal Addition: Adding Little Pieces
A five-question interactive test scholars' knowledge of adding and subtracting decimals. A tool aids in problem-solving with movable parts that reveal addends and sums. Question types include one discussion, fill and in the blank, and...
West Contra Costa Unified School District
Decimals and Fractions
Reinforce the concept of fractions and decimals as part of a whole with a lesson that begins with a mixed review, then goes into a three problem guided practice, and ends with a collaborative activity. The guided practice and activity...
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...
Math Salamanders Ltd.
Place Value—Tenths and Hundredths Sheet 5
For this finding of the sums of decimals and whole numerals worksheet, learners convert decimals from tenths to hundredths and add the same place values and whole numbers. Students solve 40 problems.
EngageNY
Scientific Notation
Young mathematicians learn how scientific notation is meant to save time. Part 10, out of a series of 15, asks scholars to recognize the correct use of scientific notation and finish by adding and subtracting numbers using...
EngageNY
Grade 5 Math Module 1, Topic E, Lesson 11
Let your understanding of multiplying decimals flourish and multiply. After briefly reviewing place value concepts and how to add and subtract decimals, scholars learn to multiply a decimal fraction (like 0.6) by a whole number. They use...
CK-12 Foundation
Repeating Decimals: Does 1 equal 0.999... ?
Six questions make up a challenging interactive that tests scholars' knowledge of repeating decimals. Mathematicians answer true or false and multiple-choice questions with help from a tool that highlights decimal movement in an...
West Contra Costa Unified School District
The Power of Ten: Building a Magnitude Model
Add visual representation to teaching place value with a magnitude model. Using adding machine tape, pupils build a linear place value strip from 1 to 100.
EngageNY
Solving Percent Problems III
What happens when combining percentage discounts? The last lesson in a series of 29 introduces the idea of combining discounts one after another. Pupils wrestle with the claim that to find the total discount, they need to only add...