# Place Value with decimals through millionths

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```					 Place Value
with decimals through millionths

1
Monday, Aug. 16th ~
• Groundworks #1 (do together as class)
• Groundworks #2 (let students do on own)
• Show ppt slides 3 and 4
• Cut out place value chart and glue (w/ glue
stick) in spiral & on the back of the page,
glue diff ways to write #s chart.
• Then proceed with ppt 5 and 6

2
Starting with the ones place, let’s name the places together, in
order, from ones to millions:

ones
tens
hundreds
thousands
ten thousands
hundred thousands
millions

3
Starting at the decimal point,
the places are named in the
same order except:
• there is not a “ones” place
• all names end in “ths”

ones                           (.) decimal
tens                           tenths
hundreds                       hundredths
thousands                      thousandths
ten thousands                  ten thousandths
hundred thousands              hundred thousandths
millions                       millionths

Now add place value chart to spiral notebook, and   4
Practice
(whole group…on screen)
1.http://www.thatquiz.org/tq/practice.html?pl
acevalue (orally—with volunteers)
2. Write each number in standard form.
(on a sheet of paper)
a) 83 thousand 903
b) (9 x 10,000) + (8 x 1,000) + (3 x 100) + (4 x 10)
c) four hundred eighty-nine thousand, three hundred forty-one
d) (5 x 100,000) + (3 x 1,000) + (7 x 10)
e) 48 thousand 16
f) two hundred eight
g) sixty-five billion, two million, fourteen thousand, three

Answers to a-g are on the next slide….   5

2. Write each number in standard form.
a) 83,903
b) 98,340
c) 489,341
d) 503,070
e) 48,016
f) 208
g) 65,002,014,003
STOP here on Mon.    6
Wednesday, Aug. 18th~
• Groundworks #4 (w/ a partner)
• Compare answers w/a partner - WS
• Teacher will “spot check” #s 7, 8, 10, 15,
21, and 22.
• Continue on to the end of this ppt
• Then, students will do WS- Read/Write
Decimals and check it in class.
7
Students ~

with today’s math
problems.
8
How to read and write decimals:
Write the following number in word form:
40.318

Step 2 :                      Step 3:
Step 1:
Write and & the word          Write the place value name
Write the word name
name for the #s to the        of the final digit after the
for the #s to the left of or
right of the decimal point.   decimal point.
before the decimal point.
forty and three hundred       forty and three hundred
forty
eighteen                   eighteen thousandths

9
Practice: try to write the following in word form.

1) 7.4005

2) 0.28067

10
Practice: try to write the following in word form.

1) 7.4005
seven and four thousand five ten thousandths

2) 0.28067
twenty-eight thousand sixty-seven hundred
thousandths

11
How would you write this # in word
form?

10 100

th h t o . t         h th th th m

0.7 2 0 3 8 5
12
Seven hundred twenty thousand, three
hundred eighty-five millionths

10 100

th h t o . t        h th th th m

0.7 2 0 3 8 5
13
What place is the 4 in ?
0. 00548

10 100

th h t o . t     h th th th m

.                     14
What place is the 4 in ?
0. 00548

10 100

th h t o . t      h th th th m

0   .   0 0 5 4 8
15
What number is in the
hundred thousandths place?

8.097136

16
What number is in the
hundred thousandths place?

8.097136

17
Try to write the following number in
standard form:

Four and twenty-nine
millionths
** Remember: when writing a decimal in standard form, start by placing
the decimals in the correct place and then work backwards. Use your

18
Four and twenty-nine
millionths
4.000029
the nine is in the millionths place

19
4.000029

10 100

th h t o . t     h th th th m

4   .   0 0 0 0 2 9
20
Now, try some more practice

http://www.thatquiz.org/tq/practice.html?placevalue

Note to teacher: Change the level to 6 and change the answers to just decimals.
Have the students practice these questions out loud.
21

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