脱式计算.(能简便计算的要简算) 3.7×1.4×0.05  ...
脱式计算.(能简便计算的要简算)3.7×1.4×0.051.4×25+3.450.8×(12.5-1.25)1.5×1021.25×0.7×0.88.65-3.7+1.3...
脱式计算.(能简便计算的要简算) 3.7×1.4×0.05 1.4×25+3.45 0.8×(12.5-1.25) 1.5×102 1.25×0.7×0.8 8.65-3.7+1.35-6.3.
展开
1个回答
展开全部
(1)3.7×1.4×0.05
=3.7×(1.4×0.05)
=3.7×0.07
=0.259;
(2)1.4×25+3.45
=35+3.45
=38.45;
(3)0.8×(12.5-1.25)
=0.8×12.5-0.8×1.25
=10-1
=9;
(4)1.5×102
=1.5×(100+2)
=1.5×100+1.5×2
=150+3
=153;
(5)1.25×0.7×0.8
=1.25×0.8×0.7
=1×0.7
=0.7;
(6)8.65-3.7+1.35-6.3
=(8.65+1.35)-(3.7+6.3)
=10-10
=0.
=3.7×(1.4×0.05)
=3.7×0.07
=0.259;
(2)1.4×25+3.45
=35+3.45
=38.45;
(3)0.8×(12.5-1.25)
=0.8×12.5-0.8×1.25
=10-1
=9;
(4)1.5×102
=1.5×(100+2)
=1.5×100+1.5×2
=150+3
=153;
(5)1.25×0.7×0.8
=1.25×0.8×0.7
=1×0.7
=0.7;
(6)8.65-3.7+1.35-6.3
=(8.65+1.35)-(3.7+6.3)
=10-10
=0.
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询