Teach the meaning of the decimal point first..."and"; numbers to its right are less than one.; tenths place means a whole divided into ten parts...write "9", then 10, 99, 100...as # move left get greAater - what do you think happens if move right...yes,smaller.write.10 show how that means 1 dime...20 is 2 dimes....90 is nine dimes, then add that last dime...then .1 and .01...001

Decimal Place Value Chart or Mat from Virtually Montessori - This black and white, 8.5" x 11" decimal place value chart / mat can be used as an instructional aid, a chart in the classroom, or as a reference for students that can be inserted into a math notebook. Free!

Virtually Montessori