来自解万成的问题
(2011•郑州模拟)下列各题,怎样简便就怎样算.(1)3.2-3.2×(3-2.5)(2)34×25÷34×25(3)8.5×99.
(2011•郑州模拟)下列各题,怎样简便就怎样算.
(1)3.2-3.2×(3-2.5)
(2)34×25÷34×25
(3)8.5×99.
1回答
2020-04-07 20:42
(2011•郑州模拟)下列各题,怎样简便就怎样算.(1)3.2-3.2×(3-2.5)(2)34×25÷34×25(3)8.5×99.
(2011•郑州模拟)下列各题,怎样简便就怎样算.
(1)3.2-3.2×(3-2.5)
(2)34×25÷34×25
(3)8.5×99.
(1)3.2-3.2×(3-2.5),
=3.2-3.2×0.5,
=3.2×(1-0.5),
=1.6;
34