## Common Core State Standards for Mathematics

Grade(s) 5 resources related to the following standard:
Number and Operations in Base Ten
Understand the place value system.
3. Read, write, and compare decimals to thousandths.
b. Compare two decimals to thousandths based on meanings of the digits in each place, using >, =, and < symbols to record the results of comparisons.

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This simple game with 5 variations develops place value understanding and strategic thinking. It is played on paper with a 6- or 9-sided die (printable pdf game sheet included). Two players take turns rolling a die and placing the resulting number in one of their four cells, representing the places of a 4-digit number. In the basic version the player who creates the larger number wins. Variations include aiming for the smaller number or a predetermined target number, using a decimal point, placing numbers in an opponent's cells, and several scoring options. Teachers' Notes include suggestions for introducing the game, support suggestions, and a link to a more challenging extension (Dicey Operations, cataloged separately).
Activity, Game
Grade Level: 2, 3, 4, 5
In this interactivity, students are required to order eight decimals from least to greatest by numbering them. Students can check answers and pieces of a picture are revealed behind their correct choices. Students can request a hint or to see all eight numbers in order and play again. Quia Web offers free shared activities with teacher-made content. Subscriptions allow members to create or alter the content of the games.
Activity, Interactive Media
This interactive Flash applet gives students practice in ordering decimals from lowest to highest in groups of 5 at a time. If help is needed, users can compare two decimals in the Testing Room by viewing them lined up with place names labeled.
Activity, Interactive Media
This interactive game gives students practice in ordering sets of whole numbers, integers, fractions, decimals, and the sizes of circles. Students re-order a group of numbers or objects in a line from least to greatest by dragging them. The activity is timed and points are awarded.
Activity, Interactive Media
Grade Level: K, 1, 2, 3, 4, 5, 6+
With this interactive applet students can develop their understanding of place value and the relative position and magnitude of numbers in the base-10 number system. Users drag given numbers to their position on a number line, zooming in and out to increase precision. They can select from six levels of difficulty (Tens, Hundreds, Thousands, Millions, Billions, Decimals) and from 1 to 3 dots. There are three modes: Explore, Practice, Test.
Activity, Interactive Media
Grade Level: 1, 2, 3, 4, 5
In this problem students apply basic proportional reasoning in the context of a pie recipe. Given a recipe for 80 pies, Peter needs to determine whether the ingredients he has on hand are enough to make 2 pies. The Teachers' Notes page offers rationale, suggestions for implementation, discussion questions, ideas for extension, and printable lists of ingredients (doc).
Activity