A-A+
用合理的方法计算.116÷[125×(25+110)]5.6×334-425×3.75+0.
问题详情
用合理的方法计算.
5.6×3
(947
参考答案
(1)116÷[125×(25+110)],
=116÷[125×(410+110)],
=116÷[125×12],
=116÷150,
=116×50,
=258;
(2)5.6×334-425×3.75+0.88×3712,
=5.6×3.75-4.4×3.75+0.88×37.5,
=5.6×3.75-4.4×3.75+8.8×3.75,
=(5.6-4.4+8.8)×3.75,
=10×3.75,
=37.5;
(3)(94735+941925+9.476+0.9476)÷0.1111,
=(947.6+94.76+9.476+0.9476)÷0.1111,
=(9476×0.1+9476×0.01+9476×0.001+9476×0.0001)÷0.1111,
=[(0.1+0.01+0.001+0.0001)×9476]÷0.1111,
=0.1111×9476÷0.1111,
=9476;
(4)2011×(3.4×69+3.5)3.5×69-3.4,
=2011×[3.4×(70-1)+3.5][(3.4+0.1)×69-3.4],
=2011×(3.4×70+0.1)3.4×69+3.5,
=2011×(3.4×70+0.1)3.4×70+0.1,
=2011.
考点:方法