怎样简便怎样算
|
48×
=
=
=
=
=7-
=6
(2
=(2
=1
=2
12.1-(
=12.1-(
=12.1-(7+5) =0.1 23×
=23×
=23
=
=22-20+5+10.1 =17.1 (
=
=
=
=
=
=78
=
=3 8×125
=8×125+8×
=1000+2.5 =1002.5 5.5×6
=5.5×(6
=5.5×10 =55 897×
=
=
=375 5
=
=494.5+5.75×0.4 =494.5+2.3 =496.8 |
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