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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

Adding big numbers can be tricky, but this lesson introduces your students to a strategy that makes it less intimidating! Using the place value strategy will make the task less daunting.

Fluently Adding Within 1000

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

Students will practice mentally adding and subtracting 10 to multiples of 10 up to 100 by playing an all time favorite: BINGO! Use alone or alongside the lesson Subtracting From Multiples of 100. 

Mental Math Bingo with Multiples of 10

Many students cringe when they see a subtraction problem with multiple zeros. The “Subtract One” strategy in this lesson involves reducing the top number by one to turn the 0 digits into 9’s and then adding the one back in at the end.

“Subtract One” Strategy: Subtracting From Zeros Without Borrowing

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

This lesson will help students build an understanding of multiples as they learn how to subtract from multiples of 100!

Subtracting from Multiples of 100

Students will have fun adding larger numbers using an open number line, first by practicing and then playing a dice game in pairs or triads called Go Froggie!

Adding Three-Digit Numbers on an Open Number Line with Froggie Game

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

In this lesson, students will learn how to add a one-digit number to a two-digit number. This will help students build upon the skills needed for regrouping larger numbers.

Adding it All Up

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

This scaffolded EL lesson will help your students fluently add within 20, while reinforcing parts of a whole. Use as a pre-lesson for Addition: Over in a Flash, or as a stand alone activity.

Adding Within 20

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

This lesson challenges young learners to add dialogue to their writing. Students will love using their creativity to write personal narratives. 

Narrative Writing: Adding Dialogue

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

Use this scaffolded EL support lesson to help students learn the strategy of decomposing three-digit numbers to add their place values. This lesson can be used alone or prior to teaching Composing and Decomposing to students.

Decomposing and Adding Place Values

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

Get ready for some mental math! Help students practice subtracting by ten by solving real-world problems involving dimes. 

Dimes, Dimes, Dimes

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

Get ready to do some shopping! In this lesson, students will learn about subtracting 100 from multiples of 100 when making big purchases. 

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Showing Results for adding subtracting