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From YouTube: Grade 2 Subtraction within 1,000
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A
Welcome
we're
going
to
be
learning
grade,
2
subtracting
within
a
thousand
a
few
strategies
to
help
your
students
at
home.
One
thing
to
keep
in
mind
is
that
students
don't
learn
the
standard,
algorithm
and
math
for
addition,
subtraction
until
grade
four,
so
starting
as
early
as
kindergarten
students
learn
strategies
that
will
enable
them
to
be
successful,
come
grade
four.
So
let's
take
a
look
when
subtracting
296
taking
away
135,
we
begin
by
having
students
build,
so
they
can
physically
see
what
296
looks
like
the
action
of
subtraction
requires
students
to
take
away.
A
A
A
So
here
are
two
strategies
that
will
help
your
students
at
home.
Learn
how
to
subtract
within
a
thousand
remember
math
is
visible
and
math
is
social,
which
means
that
students
need
to
get
their
thinking
down
on
paper
and
talking
through
their
strategies
to
develop
a
deeper
conceptual
understanding
and
to
eventually
see
the
beauty
in
mathematics.