## Common Core State Standards for Mathematics

Grade(s) 4 resources related to the following standard:
Number and Operations in Base Ten
Generalize place value understanding for multi-digit whole numbers.
1. Recognize that in a multi-digit whole number, a digit in one place represents ten times what it represents in the place to its right. For example, recognize that 700 ÷ 70 = 10 by applying concepts of place value and division.

 Showing 21-27 of 27 resultsResults per page: 10515202550 Sort by: TitleRatingNewest First
ResourceResource Type
Rating
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
This 5-minute video makes effective use of color coding to explain how to round a given 7-digit number to six different levels of precision.
Demonstration, Video
Grade Level: 4, 5
This interactive Shockwave applet provides practice in rounding numbers. Each level presents 10 grids of numbers, each with a specific challenge. Users select the number in the grid that is rounded correctly. Level 1 includes rounding whole numbers and numbers of one decimal place to the nearest unit, 10 or 100. Level 2 involves rounding off numbers with up to six decimal places. Level 3 includes rounding to a number of significant digits for whole numbers and decimals. A Key Ideas window explains how to round.
Activity, Interactive Media
Grade Level: 4, 5, 6+
Students can use this series of interactive Flash applets to practice locating numbers on a number line. Players are asked to set the course of a spaceship with a specific set of bearings for each of four levels, first with whole numbers and then decimals of up to three places. Students apply their knowledge of place value to select increasingly more precise intervals until the given number is located. The graphics are engaging and provide motivational value.
Activity, Interactive Media
Grade Level: 3, 4, 5, 6+