Area Multiplication
With Base Ten Blocks
Part 1
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Base Ten Blocks
This is
called a
unit.
It has a
value of
one.
It is called a one
because it has a
dimension of
1x1= 1 unit.
1
1
1
How much do I
have here?
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1
Base Ten Blocks
This is
called a
long.
It has a
value of
ten.
It is called a ten
because it’s dimensions
are 1x10 units.
1
10
10
How much do I have here?
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Base Ten Blocks
This is called
a flat.
It has a value of
a hundred.
It is called a
hundred because
it’s dimensions are
10x10 = 100 units.
10
100
10
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2
Base Ten Blocks
How much do I have here?
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Base Ten Blocks
How much do I have here?
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3
Base Ten Blocks
How much do I have here?
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Base Ten Blocks
Today we are going to start out
by writing numbers in base ten.
That means writing numbers as
the addition of 1 or 10 or 100.
EXAMPLE: 13 = 10 + 1 + 1 + 1
EXAMPLE: 111 = 100 + 10 + 1
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4
Base Ten Blocks
You are going to get your
homework (pink handout).
Try problem #1. Make sure you
do the written form, and the
pictures form.
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Base Ten Blocks
Written Form
Picture Below
1) 26
= 10 + 10 + 1 + 1 + 1 + 1 + 1 + 1
Notice you only use 10’s and 1’s
that is why it is called base 10.
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5
Base Ten Blocks
Written Form
Picture Below
2) 54
= 10 + 10 + 10 + 10 + 10+ 1 + 1 + 1 + 1
You will try the rest on the front
for homework! Turn your paper
over.
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There are 23 students in my class and each student
needs 12 cubes. How many cubes do I need total?
Show 23 x 12
x
10
+
10
+ 1 +1 +1
23
x 12
6 = (2 x 3)
40 = (2 x 20)
30 = (10 x 3)
+ 200 = (10 x 20)
10
+1
+1
276
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6
Base Ten Blocks
Base 10 Block Web Site
http://plato.acadiau.ca/courses/educ/reid/Virtual-manipulatives/Arithmetic/Base10.html
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Base Ten Blocks
Take Out Your Study Guide!!!
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7
#1
Base Ten Blocks
Flat
Long
Unit
1
10
10
1
1 x 1 = 1 unit
10
1
10 x 10 = 100 units
1 x 10 = 10 units
copyright©amberpasillas2010
#2
Show 13 x 12
x
10
+1 +1 +1
13
x 12
6 = (2 x 3)
20 = (2 x 10)
10
30 = (10 x 3)
+ 100 = (10 x 10)
+1
+1
156
copyright©amberpasillas2010
8