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Showing Results for adding subtracting

Start your students on subtracting three-digit numbers with this lesson that breaks the problems down by place values!

Fluently Subtracting within 1000

Continue to build on your students' understanding of unlike denominators by asking students to justify their answers of fraction subtraction. Use this lesson with the Subtracting Fractions with Different Denominators lesson.

Subtracting Fractions Justifications

Teach your students to add and subtract fractions with like denominators using a strategy that works for both operations: converting mixed numbers into improper fractions and back again!

Single Strategy for Adding and Subtracting Mixed Numbers

Students will practice subtracting decimal numbers by calculating the total of prominent political figures’ meals at a pizzeria. Then, students can create and solve their own word problems using the menu on the activity.   

Subtracting Decimals: Presidential Problems at the Pizza Place

Children often wonder if algorithms are practical. Using this lesson plan, your students will see how the standard algorithm for adding mixed numbers brings life to real world real-world situations.

Word Problems: Adding Mixed Number Fractions

Subtracting decimals to the thousandths can be fun when you are using actual statistics from Major League Baseball. Students will learn a little about how averages are calculated and then compare statistics of some of baseball's top players.

Comparing Batting Averages: Subtracting to the Thousandths

This lesson is designed for fourth graders to practice their skills with the order of operations along with multiplying fractions and adding or subtracting decimals. 

Order of Operations with Fractions and Decimals

Finding the least common multiple is an essential skill for comparing, adding, and subtracting fractions! This lesson introduces students to this concept in an interactive way.

Clap Counting with Multiples

Adding fractions with unlike denominators just doesn't work like it does when the denominators are the same. Let's make it work! Students will add fractions with unlike denominators with sums between one and two.

Make It Work! Adding Fractions with Unlike Denominators

Getting ready to subtract fractions? This lesson reviews how to subtract like denominators and teaches students how to subtract unlike denominators. The focus is on understanding the process and reasoning behind each step.

Subtracting Fractions with Different Denominators

Students will find angle sums using a baseball diamond diagram.

Adding Angles

In this lesson, students will practice explaining the process of subtracting numbers up to 1,000 using base-ten blocks and peer feedback. Use this lesson on its own or as support to the lesson Fluently Subtracting within 1,000.

Sharing the Subtraction Process

Encourage students to explain their processes when converting from a mixed number to an improper fraction, and back again. Use this lesson on its own or as support to the lesson Single Strategy for Adding and Subtracting Mixed Numbers.

Explain Fraction Conversions

It's as easy as one, two, three...four! Introduce your students to subtracting decimals in the tenth and hundredth place using a four-step process.

Step By Step Decimal Subtraction

Teach your students to subtract mixed numbers with like denominators using the strategy of decomposition. This strategy helps students to manipulate and break down numbers to help them solve tricky subtraction problems. 

Subtracting Mixed Numbers Using the Decomposition Strategy

Getting ready to add fractions? This lesson reviews how to add fractions with unlike denominators using number lines. Students will focus on understanding the process and reasoning behind each step.

Adding Fractions on Number Lines

Empower students to think like mathematicians by having them create word problems related to subtracting mixed numbers. Use this lesson on its own or as support to the lesson Subtracting Mixed Numbers Using the Decomposition Strategy.

Writing Questions for Word Problems

Solve for the sum of two mixed numbers! They will use scaffolds such as fraction models to support the visualization of mixed numbers. This can be used on its own or as support for the lesson Sums for Mixed Numbers and Improper Fractions. 

Adding Like Mixed Numbers

Start a dialogue around area models! In this lesson, encourage students to ask questions as they multiply using area models. Use this lesson on its own or as support to the lesson Area Models and Multiplication.

Area with Multiplying and Adding

Make the number work for you! Use this lesson to teach your students to add mixed numbers with like denominators using the strategy of decomposition.

Adding Mixed Numbers Using the Decomposition Strategy

Students will create angles by folding construction paper, creating angle addition sentences, and then adding the sum of angles on their models.

Folding for Angles

In this hands on lesson, students create squares with different fraction pieces while building their knowledge of adding fractions with different denominators.

Building Squares

During this lesson, students will learn how to edit their writing. They will edit their writing by adding variety to their sentences. Students will also work on writing sentences that are clearer to the reader.

Sentence Variety

Help your students show their understanding as they explain how to add fractions with unlike denominators. Use this lesson on its own or as support to the lesson Make It Work! Adding Fractions with Unlike Denominators.

Explaining Fraction Addition

Challenge your students to compare two methods for finding the least common multiple between two fractions. Use this lesson on its own or as support for the lesson Make It Work! Adding Fractions with Unlike Denominators.

Compare Common Denominators Methods

Students will practice mental math and harness their discussion skills through addition problems of like mixed numbers. This lesson may be used on its own or as support for the lesson Adding Mixed Numbers Using the Decomposition Strategy. 

Number Talks with Mixed Numbers Addition

Help students add and subtract decimals in this visual, hands-on, and delicious lesson! This lesson also reinforces place value concepts with decimals.

Candy Math: All About Decimals

Help students develop compare and contrast skills while they examine multi-digit addition models. This lesson can be used independently or in conjunction with the lesson Addition with Regrouping.

Compare & Contrast Addition Strategies

There’s more than one way to add and subtract mixed numbers! Use this witty lesson plan to teach your students to illustrate mixed number sums and difference while giggling with delight. 

Solving Mixed Number Word Problems Using the Three-Reads Strategy

Encourage student explanations and visual representation of fraction subtraction in this interactive lesson. Use this lesson on its own or as support to the lesson Modeling Mixed Number Subtraction.

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Showing Results for adding subtracting