Book a Demo
Topics
N
u
m
b
e
r
(
m
u
l
t
/
d
i
v
)
M
u
l
t
i
p
l
i
c
a
t
i
o
n
a
s
r
e
p
e
a
t
e
d
a
d
d
i
t
i
o
n
(
1
0
x
1
0
)
I
n
t
e
r
p
r
e
t
i
n
g
p
r
o
d
u
c
t
s
(
1
0
x
1
0
)
A
r
r
a
y
s
a
s
p
r
o
d
u
c
t
s
(
1
0
x
1
0
)
M
u
l
t
i
p
l
i
c
a
t
i
o
n
a
n
d
d
i
v
i
s
i
o
n
u
s
i
n
g
g
r
o
u
p
s
(
1
0
x
1
0
)
M
u
l
t
i
p
l
i
c
a
t
i
o
n
a
n
d
d
i
v
i
s
i
o
n
u
s
i
n
g
a
r
r
a
y
s
(
1
0
x
1
0
)
C
o
m
p
l
e
t
e
m
u
l
t
i
p
l
i
c
a
t
i
o
n
a
n
d
d
i
v
i
s
i
o
n
f
a
c
t
s
i
n
a
t
a
b
l
e
(
1
0
x
1
0
)
M
u
l
t
i
p
l
i
c
a
t
i
o
n
a
n
d
d
i
v
i
s
i
o
n
(
t
u
r
n
a
r
o
u
n
d
s
a
n
d
f
a
c
t
f
a
m
i
l
i
e
s
)
(
1
0
x
1
0
)
F
i
n
d
q
u
o
t
i
e
n
t
s
(
1
0
x
1
0
)
N
u
m
b
e
r
s
e
n
t
e
n
c
e
s
a
n
d
w
o
r
d
p
r
o
b
l
e
m
s
(
1
0
x
1
0
)
E
x
t
e
n
d
i
n
g
m
u
l
t
i
p
l
i
c
a
t
i
o
n
a
n
d
d
i
v
i
s
i
o
n
c
a
l
c
u
l
a
t
i
o
n
s
u
s
i
n
g
p
a
t
t
e
r
n
s
(
1
0
x
1
0
)
P
r
o
b
l
e
m
s
o
l
v
i
n
g
w
i
t
h
m
u
l
t
i
p
l
i
c
a
t
i
o
n
a
n
d
d
i
v
i
s
i
o
n
(
1
0
x
1
0
)
P
r
o
p
e
r
t
i
e
s
o
f
m
u
l
t
i
p
l
i
c
a
t
i
o
n
(
1
0
x
1
0
)
M
u
l
t
i
p
l
y
a
s
i
n
g
l
e
d
i
g
i
t
n
u
m
b
e
r
b
y
a
t
h
r
e
e
d
i
g
i
t
n
u
m
b
e
r
u
s
i
n
g
a
n
a
r
e
a
m
o
d
e
l
M
u
l
t
i
p
l
y
a
s
i
n
g
l
e
d
i
g
i
t
n
u
m
b
e
r
b
y
a
t
h
r
e
e
d
i
g
i
t
n
u
m
b
e
r
M
u
l
t
i
p
l
y
a
s
i
n
g
l
e
d
i
g
i
t
n
u
m
b
e
r
b
y
a
f
o
u
r
d
i
g
i
t
n
u
m
b
e
r
u
s
i
n
g
a
n
a
r
e
a
m
o
d
e
l
Lesson
Practice
M
u
l
t
i
p
l
y
a
s
i
n
g
l
e
d
i
g
i
t
n
u
m
b
e
r
b
y
a
f
o
u
r
d
i
g
i
t
n
u
m
b
e
r
u
s
i
n
g
a
l
g
o
r
i
t
h
m
M
u
l
t
i
p
l
y
2
t
w
o
d
i
g
i
t
n
u
m
b
e
r
s
u
s
i
n
g
a
n
a
r
e
a
m
o
d
e
l
M
u
l
t
i
p
l
y
2
t
w
o
d
i
g
i
t
n
u
m
b
e
r
s
M
u
l
t
i
p
l
y
a
t
w
o
d
i
g
i
t
n
u
m
b
e
r
b
y
a
3
d
i
g
i
t
n
u
m
b
e
r
M
u
l
t
i
p
l
y
3
n
u
m
b
e
r
s
t
o
g
e
t
h
e
r
D
i
v
i
d
e
a
2
d
i
g
i
t
n
u
m
b
e
r
b
y
a
1
d
i
g
i
t
n
u
m
b
e
r
u
s
i
n
g
a
r
e
a
o
r
a
r
r
a
y
m
o
d
e
l
D
i
v
i
d
e
a
2
d
i
g
i
t
n
u
m
b
e
r
b
y
a
1
d
i
g
i
t
n
u
m
b
e
r
D
i
v
i
d
e
a
3
d
i
g
i
t
n
u
m
b
e
r
b
y
a
1
d
i
g
i
t
n
u
m
b
e
r
u
s
i
n
g
a
r
e
a
o
r
a
r
r
a
y
m
o
d
e
l
D
i
v
i
d
e
a
4
d
i
g
i
t
n
u
m
b
e
r
b
y
a
1
d
i
g
i
t
n
u
m
b
e
r
u
s
i
n
g
a
r
e
a
o
r
a
r
r
a
y
m
o
d
e
l
D
i
v
i
d
e
a
4
d
i
g
i
t
n
u
m
b
e
r
b
y
a
1
d
i
g
i
t
n
u
m
b
e
r
D
i
v
i
d
e
a
3
d
i
g
i
t
n
u
m
b
e
r
b
y
a
1
d
i
g
i
t
n
u
m
b
e
r
r
e
s
u
l
t
i
n
g
i
n
a
r
e
m
a
i
n
d
e
r
M
u
l
t
i
p
l
y
v
a
r
i
o
u
s
s
i
n
g
l
e
a
n
d
d
o
u
b
l
e
d
i
g
i
t
n
u
m
b
e
r
s
E
x
t
e
n
d
m
u
l
t
i
p
l
i
c
a
t
i
v
e
s
t
r
a
t
e
g
i
e
s
t
o
l
a
r
g
e
r
n
u
m
b
e
r
s
D
i
v
i
d
e
v
a
r
i
o
u
s
n
u
m
b
e
r
s
b
y
s
i
n
g
l
e
d
i
g
i
t
s
S
o
l
v
e
d
i
v
i
s
i
o
n
p
r
o
b
l
e
m
s
p
r
e
s
e
n
t
e
d
w
i
t
h
i
n
c
o
n
t
e
x
t
s
S
o
l
v
e
m
u
l
t
i
p
l
i
c
a
t
i
o
n
a
n
d
d
i
v
i
s
i
o
n
p
r
o
b
l
e
m
s
i
n
v
o
l
v
i
n
g
o
b
j
e
c
t
s
o
r
w
o
r
d
s
Log in
Sign up
Book a Demo
Hong Kong
Stage 1
Multiply a single digit number by a four digit number using an area model
What is Mathspace
About Mathspace
