递等式计算:(能简便计算的用简便方法计算)(1)3.6×1.25+0.32÷0.4(2)0.45×78.2+20.8×0.45+0.45
递等式计算:(能简便计算的用简便方法计算)(1)3.6×1.25+0.32÷0.4(2)0.45×78.2+20.8×0.45+0.45(3)14.5+27.3+12.7...
递等式计算:(能简便计算的用简便方法计算)(1)3.6×1.25+0.32÷0.4(2)0.45×78.2+20.8×0.45+0.45(3)14.5+27.3+12.7+45.5(4)(0.25+0.125)÷(0.75×0.4)(5)6500÷0.125÷0.8(6)[(3.8-2.5)×0.4-0.1]÷0.04.
展开
1个回答
展开全部
(1)销雹老3.6×1.25+0.32÷0.4,
=0.9×(4×1.25)+0.8,
=4.5+0.8,
=5.3;
(2)0.45×78.2+20.8×0.45+0.45,
=0.45×(78.2+20.8+1),
=0.45×100,
=45;
(3)14.5+27.3+12.7+45.5,
=(14.5+45.5)+(27.3+12.7),
=60+40,
=100;
(4)(0.25+0.125)÷(0.75×0.4)
=0.375÷0.3.
=1.25;
(5)6500÷0.125÷0.8,
=6500÷(0.125×0.8),
=6500÷0.1,
=65000;
(6)肆裂[(3.8-2.5)×0.4-0.1]÷0.04,亏升
=[1.3×0.4-0.1]÷0.04,
=0.42÷0.04,
=10.5;
=0.9×(4×1.25)+0.8,
=4.5+0.8,
=5.3;
(2)0.45×78.2+20.8×0.45+0.45,
=0.45×(78.2+20.8+1),
=0.45×100,
=45;
(3)14.5+27.3+12.7+45.5,
=(14.5+45.5)+(27.3+12.7),
=60+40,
=100;
(4)(0.25+0.125)÷(0.75×0.4)
=0.375÷0.3.
=1.25;
(5)6500÷0.125÷0.8,
=6500÷(0.125×0.8),
=6500÷0.1,
=65000;
(6)肆裂[(3.8-2.5)×0.4-0.1]÷0.04,亏升
=[1.3×0.4-0.1]÷0.04,
=0.42÷0.04,
=10.5;
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