Multiplication and division strategies to support students who have finished 5th Grade's unit 4 in Savvas Investigations.

5th Grade Multiplication & Division Strategies

Purple geometrical pattern

This picture is showing the strategy of breaking numbers apart by place value to multiply them. For the equation 85 x 63, the numbers are broken into 80 and 5 as well as 60 and 3. In order to solve this problem, you must multiply each part in one number by both parts in the other number. 80 times 60, 80 time 3, 5 times 60, 5 times 3. Once all of the smaller multiplication problems are solved, you can add up all the answers to reach your final answer of 5,355

Box Method Multiplication | 3-Digits x 2-Digits | Math with Mr. J

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Using Multiplication to Solve Division Problems

<a href="https://drive.google.com/file/d/1KLw4pXc1RYWHQQ10IjxEvFsJKuAF4E_f/view?usp=sharing">Partial Quotients (Magic 7)</a>

Area Model for Division

U.S. Standard Algorithm for Multiplication

Things to Remember: 1. Always start with the bottom number. 2. Ones x ones, ones x tens, ones x hundreds, repeat with tens, hundreds, etc. 3. Think about place value and be sure to keep all of the digits in their correct place.

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Click here to watch a tutorial of standard algorithm in action!

<a href="https://drive.google.com/file/d/18rNUn5wZlJEckhr-ePoadz54S4TVitsf/view?usp=sharing">Video Tutorial</a>

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Benchmark #1: Fluently solve multidigit multiplication problems using a variety of strategies, including the U.S. Standard Algorithm. Benchmark #2: Solve division problems with up to 4-digit dividends and 2-digit divisors efficiently.

#1 Solving multiplication problems fluently. #2 Solving division problems efficiently.