Decimals

Expanded Notation-
623.124= 6(100) * 2(10)*3(1)*1(1/10)*2(1/100)*4(1/1000)
34.827=3(10)*4(1)*8(1/10)*2(1/100)*7(1/1000)
Writing out the names-
345.326- three hundred fourty-five and three hundred twenty-six thousandths
9.3425- nine and three thousand four hundred twenty-five ten thousandths
0.25- twenty five hundredths
Models-
 Decimal Squares
 Base Ten Blocks
 Number Line