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N
u
m
b
e
r
(
o
r
d
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r
a
n
d
p
l
a
c
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v
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E
x
p
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d
n
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t
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p
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f
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N
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b
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s
,
w
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d
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d
s
y
m
b
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l
s
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9
0
0
0
0
t
o
9
0
0
0
0
0
)
N
u
m
b
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s
,
w
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d
s
a
n
d
s
y
m
b
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(
m
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)
O
r
d
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r
i
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g
n
u
m
b
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s
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9
0
0
0
0
t
o
m
i
l
l
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n
)
P
a
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t
i
t
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n
n
u
m
b
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s
(
9
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)
C
o
n
s
t
r
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c
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n
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m
b
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s
(
9
0
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0
0
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m
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l
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n
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)
C
o
m
p
a
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n
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m
b
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r
s
(
9
0
0
0
0
t
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m
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l
l
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n
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)
P
u
z
z
l
e
u
s
i
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g
P
l
a
c
e
V
a
l
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e
o
f
N
u
m
b
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s
i
n
t
h
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M
i
l
l
i
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n
s
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I
n
v
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t
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g
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E
X
T
:
N
u
m
b
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r
s
,
w
o
r
d
s
a
n
d
s
y
m
b
o
l
s
(
i
n
b
i
l
l
i
o
n
s
)
E
X
T
:
O
r
d
e
r
n
u
m
b
e
r
s
(
i
n
b
i
l
l
i
o
n
s
)
E
X
T
:
P
a
r
t
i
t
i
o
n
n
u
m
b
e
r
s
(
b
i
l
l
i
o
n
s
)
E
X
T
:
C
o
n
s
t
r
u
c
t
n
u
m
b
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r
s
(
b
i
l
l
i
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n
s
)
E
X
T
:
C
o
m
p
a
r
e
n
u
m
b
e
r
s
(
b
i
l
l
i
o
n
s
)
Lesson
Practice
E
X
T
:
E
s
t
i
m
a
t
i
n
g
O
b
j
e
c
t
s
(
I
n
v
e
s
t
i
g
a
t
i
o
n
)
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Grade 6
EXT: Compare numbers (billions)
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