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Standard 3.OA.A.4

A. Represent and solve problems involving multiplication and division. Determine the unknown whole number in a multiplication or division equation relating three whole numbers within 100. For example, determine the unknown number that makes the equation true in each of the equations: 8 x ? = 48, 5 = ? ÷ 3, 6 x 6 =?

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By the end of this lesson, students will be able to:

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By the end of this lesson, students will be able to:

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1. Identify unknown numbers in multiplication and division equations.
2. Solve equations with unknown numbers using their understanding of multiplication and division.

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How can we use our knowledge of multiplication and division to find missing numbers in equations?

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Students will play a game where they match multiplication facts to their products for extra practice with their multiplication facts.

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Practice the multiplication tables while also uncovering a hidden picture in this fun matching game!

You can practice any single times table (such as multiplication by 9), or several tables (such as tables of 2 and 5), or all of them. You can also choose the number of tiles (12, 18, 24), and thereby make the game easier or harder.

Have fun! 😎

Tables of:

Check All Check Tables 1-12 Uncheck All

Go!

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Practice the multiplication tables while also uncovering a hidden picture in this fun matching game!

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Students will watch a video that will help explain how to figure out the missing factors.

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Finding Unknown Numbers in Multiplication and Division Equations - 3rd Grade

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Students will answer the questions. We will go over it as a class after. Questions will be about filling in the missing number.

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In small groups, students discuss the answers they got to the question. Then talk about the different ways you got the answer to the question.

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Students will watch another video about finding the missing factor in a multiplication problem.

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Students answer math questions on the website about finding the missing factor for multiplication problems.

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IXL | Multiplication facts up to 12: find the missing factor | 3rd grade math

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Improve your math knowledge with free questions in "Multiplication facts up to 12: find the missing factor" and thousands of other math skills.

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Students will play another game that will help them practice finding the missing factors in a fun way.

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Mental Math - multiply numbers by memory or through other efficient methods
Problem Solving - match multiplication expressions with the correct products

Common Core Connection for 3rd Grade

Determine the unknown whole number in a multiplication equation (4 x ? = 24).
Apply properties of operations as strategies to multiply.
Know from memory all products of two one-digit numbers.

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Swimming Otters Multiplication | Math Playground

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Play Swimming Otters at Math Playground! Know your multiplication facts and your otter will win first place.

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Throughout the lesson, observe students problem-solving strategies. Make notes on each student and find other ways that will work better for them.

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Students will play a game that will help them practice their division facts.

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Mental Math - divide numbers by memory or through other efficient methods
Problem Solving - match division expressions with the correct quotients

Common Core Connection for 3rd Grade

Understand division as an unknown-factor problem.
Apply properties of operations as strategies to multiply and divide.
Fluently divide within 100 using strategies and properties of operations.

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Play Demolition Division at Math Playground! Use division facts to keep the invaders away.

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Finding the Missing Dividend and Divisor

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Finding the Missing Dividend and Divisor

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Students will watch a video about finding the missing numbers in a division problem.

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(MATH) How to Find the Missing Dividend and Divisor? | #iQuestionPH

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Students will answer the questions. We will go over it as a class after. Questions will be about filling in the missing number.

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Students will answer questions on the website about finding the missing numbers for division problems as practice.

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IXL | Division facts up to 12: find the missing number | 3rd grade math

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Improve your math knowledge with free questions in “Division facts up to 12: find the missing number” and thousands of other math skills.

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Students will watch another video about how to find the missing dividend in division problems.

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Students play an online game for additional practice with solving for unknown numbers in equations.

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Practice addition, place value, multiplication, fractions and algebraic reasoning with our popular math games.

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Students create and solve 3 word problems involving unknown numbers in multiplication or division scenarios they might encounter in daily life.