分析:(1)(4)運(yùn)用減法性質(zhì)解答,
(2)(3)(7)依據(jù)四則運(yùn)算計(jì)算方法,先算第二級運(yùn)算,再算第一級運(yùn)算,如果只含有同一級運(yùn)算,按照從左到右順序計(jì)算,有括號先算括號里面的解答,
(5)先運(yùn)用乘法分配律再運(yùn)用加法結(jié)合律解答,
(6)運(yùn)用乘法分配律解答.
解答:解:(1)210-97+83,
=210-100+3+83,
=110+3+83,
=196;
(2)19.8-0.6×7,
=19.8-4.2,
=15.6;
(3)
+
×,
=
+,
=1
;
(4)[7.6-(3.85+2.6)]×0.4,
=[7.6-2.6-3.85]×0.4,
=[5-3.85]×0.4,
=1.15×0.4,
=0.46;
(5)(
+
)×8+
,
=
×8+
×8
+,
=5+(
+),
=5+1,
=6;
(6)(
+
+
)×24,
=
×24+
×24+
×24,
=12+8+6,
=26;
(7)2-2÷3+
,
=1
+,
=1
.
點(diǎn)評:本題主要考查學(xué)生運(yùn)用四則運(yùn)算計(jì)算方法,以及正確運(yùn)用簡便算法的能力.