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Estimation
Mathematics, Grade 4
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Study Guide Estimation Mathematics, Grade 4
❮
1
/
2
❯
ESTIMATION
To
estimate
means
to
make
an
educated
guess
based
on
what
you
already
know.
You
can
estimate
an
answer
to
an
addition
or
subtraction
problem
by
rounding
the
numbers
in
the
problem
before
adding
or
subtracting.
The
estimated
answer
should
be
close
to
the
final
answer,
but
probably
won’t
be
the
exact
final
answer.
Estimating
saves
time
and
steps
and
gives
you
an
idea
of
what
the
final
answer
would
be.
Let’s
Try
It:
Estimate
the
answer
to
the
following
addition
problem:
486
+
220
486
round
up
500
+
220
round
down
200
500
+
200
700
Estimated
Answer:
700
-
Final,
actual
answer:
686
So
the
estimated
answer
is
very
close
to
the
real
answer.
You
can
estimate
with
dollar
amounts
as
well.
$5.79
-
$1.88
$5.79
$6.00
rounded
up
-
$1.88
$2.00
rounded
up
$6.00
-
$2.00
$4.00
Estimated
Answer:
$4.00
-
Actual,
computed
answer:
$3.51
© Copyright NewPath Learning. All Rights Reserved.
Permission
is
granted
for
the
purchaser
to
print
copies
for
non-commercial
educational
purposes
only.
Visit
us
at
www.NewPathLearning.com.
You
Try
Estimate
the
answer
to
the
following
problem.
379
+
115
What
is
the
best
estimated
answer?
Estimated
Answer:
500
(by
rounding
379
400
and
115
100)
© Copyright NewPath Learning. All Rights Reserved.
Permission
is
granted
for
the
purchaser
to
print
copies
for
non-commercial
educational
purposes
only.
Visit
us
at
www.NewPathLearning.com.
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