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AAA Math
Aaa Math: Thousandths as Decimals
This site explains how to identify the thousandths place value. Includes games to practice this skill.
Khan Academy
Khan Academy: Write Numbers in Different Forms
Practice breaking numbers into hundreds, tens, and ones. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a tutorial video, or receive hints.
abcteach
Abcteach: Select a Math Problem Type
Generate worksheets for math problems ranging from simple addition problems to place value with expanded notation for free. Your choice of font, font size, color and landscape when printing.
E-learning for Kids
E Learning for Kids: Math: Ice Cream Shop: Four Digit Numbers
On this interactive site students learn to place numbers in ascending and descending order, write 4-digit numbers in expanded notation and discuss place value.
Illustrative Mathematics
Illustrative Mathematics: Number of the Day
Repeatable, daily activities are one of the best ways to instill the counting sequence for children. This activity requires a 100 chart which can be made or purchased. Students will count the "Number of the Day" beginning with 1 on the...