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Topics
N
u
m
b
e
r
(
m
u
l
t
i
p
l
i
c
a
t
i
o
n
/
d
i
v
i
s
i
o
n
)
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
5
x
1
5
)
I
n
t
e
r
p
r
e
t
i
n
g
p
r
o
d
u
c
t
s
(
1
5
x
1
5
)
A
r
r
a
y
s
a
s
p
r
o
d
u
c
t
s
(
1
5
x
1
5
)
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
5
x
1
5
)
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
5
x
1
5
)
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
a
b
l
e
s
(
1
5
x
1
5
)
F
i
n
d
q
u
o
t
i
e
n
t
s
(
1
5
x
1
5
)
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
5
x
1
5
)
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
b
y
1
0
a
n
d
1
0
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
5
x
1
5
)
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
5
x
1
5
)
D
i
s
t
r
i
b
u
t
i
v
e
p
r
o
p
e
r
t
y
f
o
r
m
u
l
t
i
p
l
i
c
a
t
i
o
n
(
1
0
x
1
0
)
U
s
e
t
h
e
d
i
s
t
r
i
b
u
t
i
v
e
p
r
o
p
e
r
t
y
(
1
0
x
1
0
)
U
s
e
r
o
u
n
d
i
n
g
t
o
e
s
t
i
m
a
t
e
s
o
l
u
t
i
o
n
s
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
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
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
Lesson
Practice
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
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
s
h
o
r
t
d
i
v
i
s
i
o
n
a
l
g
o
r
i
t
h
m
D
i
v
i
d
e
a
4
d
i
g
i
t
n
u
m
b
e
r
b
y
a
1
d
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g
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t
n
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m
b
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r
u
s
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n
g
a
r
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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
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g
i
t
n
u
m
b
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r
e
s
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l
t
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g
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m
a
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D
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v
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d
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3
d
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m
b
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b
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1
d
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r
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m
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w
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m
a
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d
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s
M
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p
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d
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g
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E
x
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D
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M
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,
2
a
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3
d
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D
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d
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2
d
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United Kingdom
England
KeyStage 2 Upper
Multiply 3 numbers together
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