Question

下面每题，怎样算简便就怎样算

36.8-6.8÷0.5	0.125×32×0.25	1.25×8.8
73÷4+2.7×0.25	3.75÷[0.3×（1.34-0.84）]．

Answer 1

①36.8-6.8÷0.5，
=36.8-13.6，
=23.2；

②0.125×32×0.25，
=（0.125×8）×（4×0.25），
=1×1，
=1；

③1.25×8.8，
=1.25×（8+0.8），
=1.25×8+1.25×0.8，
=10+1，
=11；

④73÷4+2.7×0.25，
=73×

1

4

+2.7×0.25，
=（73+2.7）×0.25，
=75.7×0.25，
=18.925；

⑤3.75÷[0.3×（1.34-0.84）]，
=3.75÷[0.3×0.5]，
=3.75÷0.15，
=25．