Decimal Place Value

September 11, 2011
Write the below number in
expanded form.
623,408,009
600,000,000 + 20,000,000 + 3,000,000+
400,000+8,000 + 900
600,000,000 + 20,000,000 + 3,000,000+
400,000+8,000 + 9
review
Decimal
Place Value
1) Today you will learn the place value of decimals.
Lesson objectives
Teachers' notes
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Lesson objectives
teacher notes
Teachers' notes
September 11, 2011
Math Words:
equivalent decimals: decimals that
name the same number
ex: 0.2 = 0.20
vocabulary
Place Value Chart with
Decimals
Hundreds
Tens
Ones
"and"
Tenths
Hundredths
Thousandths
150 42 9
place value
Decimals in Standard Form
150.429
Read and write:
one hundred fifty and four
hundred twenty nine thousandths
standard form
pull
See:
September 11, 2011
Decimals in Short Word
Form
150.429
150 and 429 thousandths
short word form
Decimals in Expanded Form
pull
150.429
100 + 50 + 5 + .4 + .02 + .009
standard form
Move the number to the correct
number form
Number
Number Form
Standard Form
Expanded Form
Word Form
five and seventy three
hundredths
5.73+.03
5 +.70
number sort
September 11, 2011
Equivalent Decimals
Step 1: add a zero after the last
number or if it ends in a zero,
delete it
ex: 0.2 = 0.20
equivalent decimals
Do problems 1,2,5 & 6 TB pg.7
1) 5.043
tenths
hundredths
thousandths
2) 30.007
5) 6.7
______ ______
6.70 or 6.700
6) 0.8
______ ______
0.80 or 0.800
You Try It!
Independent Practice:
TB pg.8 (9-23, 27-34)
Extra practice: TB pg. 37 (1-28, bottom)
Homework: PB pg.3
Quiz this Friday and every Wednesday and Friday!
Ind. Practice
September 11, 2011
Answer Keys
The following pages are answer keys to problems
on previous pages!
Mar 19-7:45 AM
Move the number to the correct
number form
Number Form
Number
5.73
Standard Form
5 +.70 +.03
five and seventy three
hundredths
Expanded Form
Word Form
number sort answer key