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Flip Charts
Multiplying Two-digit Numbers
Mathematics, Grade 4
❮
1
/
2
❯
Multiplication
Arrays
Using
the
Distributive
Property
Distributive
Property
of
Multiplication
•
An
array
is
one
way
to
show
the
product
of
two
numbers.
•
An
array
is
used
to
break
apart
greater
factors
to
make
numbers
easier
to
multiply.
4
x
5
4
x
(3
+
2)
=
4
x
5
=
20
4
x
(3
+
2)
=
(4
x
3)
+
(4
x
2)
=
12
+
8
=
20
Step
1
Step
2
Step
3
12
x
18
96
12
x
18
96
120
12
x
18
96
+
120
216
1
Multiply
(8
x
12)
2
Multiply
(10
x
12)
3
Add
96
and
120
to
find
the
final
product
Remember
the
expanded
form
of
18
is
(10
+
8).
Each
addend
is
multiplied
by
12.
12
x
8
10
10
180
216
96
2
x
8
=
16
10
x
8
=
80
10
x
10
=
100
2
x
10
=
20
120
36
8
2
© Copyright NewPath Learning. All Rights Reserved. 93-4402
www.newpathlearning.com
Multiplying
Two-digit
Numbers
\|xiBAHBDy01656kzU
Multiplication
Arrays
Using
the
Distributive
Property
Distributive
Property
of
Multiplication
•
An
is
one
way
to
show
the
of
two
numbers.
•
An
array
is
used
to
break
apart
greater
factors
to
make
numbers
easier
to
.
4
x
5
4
x
(3
+
2)
=
4
x
5
=
20
4
x
(3
+
2)
=
(4
x
3)
+
(4
x
2)
=
12
+
8
=
20
Step
1
Step
2
Step
3
12
x
18
96
12
x
18
96
12
x
18
96
1
Multiply
(8
x
12)
2
Multiply
(10
x
12)
3
Add
96
and
120
to
find
the
final
product
Remember
the
expanded
form
of
18
is
(10
+
8).
Each
addend
is
multiplied
by
12.
12
x
8
Key
Vocabulary
Terms
•
add
•
expanded
form
•
array
•
factor
•
digit
•
multiply
•
distributive
property
•
product
+
10
10
180
216
96
2
x
8
=
16
10
x
8
=
80
10
x
10
=
100
2
x
10
=
20
120
36
8
2
© Copyright NewPath Learning. All Rights Reserved. 93-4402
www.newpathlearning.com
Multiplying
Two-digit
Numbers
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