问题
解答题
怎样简便就怎样算.
70-29.6-10.4
0.9+1.08+0.92+0.1
90÷(3.6-1.8)+5.1
0.36÷[(6.1-4.6)×0.8].
答案
(1)70-29.6-10.4,
=70-(29.6+10.4),
=70-40,
=30;
(2)0.9+1.08+0.92+0.1,
=(0.9+0.1)+(1.08+0.92),
=1+2,
=3;
(3)90÷(3.6-1.8)+5.1,
=90÷1.8+5.1,
=50+5.1,
=55.1;
(4)0.36÷[(6.1-4.6)×0.8],
=0.36÷[1.5×0.8],
=0.36÷1.2,
=0.3.