Many
people
use
an
abacus
today
to
count
but
the
Chinese
____________________
(
to
invent
)
it
a
long
time
ago
.
They
____________________
(
to
start
)
to
use
the
abacus
about
2
,
000
years
ago
because
they
____________________
(
to
want
)
something
to
help
them
count
money
.
They
____________________
(
to
moved
)
the
beads
from
right
to
left
and
left
to
right
.
People
in
shops
____________________
(
to
use
)
the
abacus
to
do
all
the
maths
that
we
do
today
.
They
____________________
(
to
add
)
,
____________________
(
to
subtract
)
,
____________________
(
to
divide
)
and
____________________
(
to
multiply
)
with
an
abacus
.
