Strand: NUMBER AND OPERATIONS IN BASE TEN (5.NBT)

Understand the place value system (Standards 5.NBT.1–4). Perform operations with multidigit whole numbers and with decimals to hundredths (Standards 5.NBT.5–7).

Standard 5.NBT.5

Fluently multiply multi-digit whole numbers using the standard algorithm.

• Area Model for Division
You will learn how to solve multi-digit division problems by using area models (manipulatives) in this interactive activity. Further classroom activities involve solving problems and constructing your own area models. NOTE: You have to create a Free PBS Account to view this web page, but it is easy to do and worth the effort.
• Determining Surface Area with Unit Blocks, Rulers, and Nets
In this video students are shown how to calculate the surface area of a prism. The classroom activity in the lesson requires that students apply this knowledge and measure the surface areas of real 3-Dl objects. NOTE: You have to create a Free PBS Account to view this web page, but it is easy to do and worth the effort.
• Elmer's Multiplication Error
This task has students explore a very common multiplication error that occurs when using the standard algorithm - it is easy to forget a step or misalign the addends if you aren't thinking about the value of a particular digit. This task is designed to help students catch these kinds of errors.
• Games for Decimals
This Teaching Channel video and lesson plan will help students understand tenths and hundredths with the game "Fill Two". (4 minutes)
• IXL Game: Mixed Operations
This game will help fifth graders understand how to add, subtract, multiply, and divide decimals. This is just one of many online games that supports the Utah Math core. Note: The IXL site requires subscription for unlimited use.
• Minutes and Days
This task requires division of multi-digit numbers in the context of changing units. In addition, the conversion problem requires two steps since 2011 minutes needs to be converted first to hours and minutes and then to days, hours, and minutes.
• Multidigit Multiplication with Standard Algorithm: The Donut Doze Off
Begin this activity by watching a video about Bianca who works in a donut shop. When asked by her boss to do a task she makes a mistake and then must use multiplication strategies to save the day. NOTE: You have to create a Free PBS Account to view this web page, but it is easy to do and worth the effort.
• Solve the Ratio and Proportion Problem Beyond a Shadow of a Doubt
In this video, Harry, after finding money on a sidewalk, must use ratio and proportion to get it back to its owner. NOTE: You have to create a Free PBS Account to view this web page, but it is easy to do and worth the effort.
• The Value of Education
The purpose of this task is for students to add, subtract, multiply, and divide decimal numbers in a real-world context.
• USBE Core Guide (5NBT5)
This core guide was developed by USBE and Utah educators.
• What is 23 divided by 5?
This task involves whole number division problems which do not result in a whole number quotient. It is important for students to be able to decide whether the context requires the result to be reported as a whole number with remainder or a mixed number/decimal.

http://www.uen.org - in partnership with Utah State Board of Education (USBE) and Utah System of Higher Education (USHE).  Send questions or comments to USBE Specialist - Shannon Ference and see the Mathematics - Elementary website. For general questions about Utah's Core Standards contact the Director - DIANA SUDDRETH .
Email:  diana.suddreth@schools.utah.gov

These materials have been produced by and for the teachers of the State of Utah. Copies of these materials may be freely reproduced for teacher and classroom use. When distributing these materials, credit should be given to Utah State Board of Education. These materials may not be published, in whole or part, or in any other format, without the written permission of the Utah State Board of Education, 250 East 500 South, PO Box 144200, Salt Lake City, Utah 84114-4200.
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