问题
解答题
计算: ①(-0.66)÷9×(-3); ②(-
③+(-8)÷[(-
|
答案
①原式=-0.66×
×(-3)=0.22;1 9
②原式=-
×0.6×(-1 6
)×4 7
=-5 2
×(-1 10
)×4 7
=5 2
;1 7
③原式=-8÷
÷(-9 64
)=-9 4
÷(-512 9
)=259 4
.23 81
计算: ①(-0.66)÷9×(-3); ②(-
③+(-8)÷[(-
|
①原式=-0.66×
×(-3)=0.22;1 9
②原式=-
×0.6×(-1 6
)×4 7
=-5 2
×(-1 10
)×4 7
=5 2
;1 7
③原式=-8÷
÷(-9 64
)=-9 4
÷(-512 9
)=259 4
.23 81