急…解答下面的题,要写过程哦,写出比较好的悬赏100分
(1)-14- ×{2-(-3)2}
解:原式=
=
(2)(1÷0.3)2÷{-3 +1 }×0.3
解:原式=
=
(3)(-370)×(- )+0.25×24.5+(-5 )×(-25%)
解:原式=
=
(4){(-1)3÷ -33×(- )2}÷︱-4÷2×(- )2
解:原式=
=
急…解答下面的题,要写过程哦,写出比较好的悬赏100分
(1)-14- ×{2-(-3)2}
解:原式=
=
(2)(1÷0.3)2÷{-3 +1 }×0.3
解:原式=
=
(3)(-370)×(- )+0.25×24.5+(-5 )×(-25%)
解:原式=
=
(4){(-1)3÷ -33×(- )2}÷︱-4÷2×(- )2
解:原式=
=
(1)-14- ×{2-(-3)2}
解:原式=-1×(2-9)
=-1×(-7)=7
(2)(1÷0.3)2÷{-3 +1 }×0.3
解:原式=(10/3)^2÷(-2)×3/10
=100/9÷(-2)×3/10=-5/3
(3)(-370)×(- 0.25)+0.25×24.5+(-5 )×(-25%)
解:原式=370×0.25+0.25×24.5+5×0.25
=0.25×(370+24.5+5)=99.875
(这道题有问题,好像错了。)
(4){(-1)3÷ -33×(- )2}÷︱-4÷2×(- )2
解:原式=[(-1)÷(-27)×1]÷4÷4
这道题目不清楚怎么做。不能做。