第一道: 26.4乘25-2.6乘250=
第二道:88.8乘8.7+11.2乘9.9-11.2乘1.2=
第3道:12.6乘7.6乘2.32除以1.9除以1.4除以2.9=
77.777乘222.22+22.222乘333.33-3.3333乘4444.4=
9.99乘2.22+3.33乘3.34=
数学大神再帮帮其它几题吧!
追答2)=88.8×8.7+11.2×(9.9-1.2)
=88.8×8.7+11.2×8.7
=8.7×(88.8+11.2)
=8.7×100
=870
3)=(12.6÷1.4)×(7.6÷1.9)×(2.32÷2.9)
=9×4×0.8
=28.8
4)=22.222×(777.77+333.33)-3.3333×4444.4
=22.222×1111.1-3.3333×4×1111.1)
=1111.1×(22.222-13.3332)
=1111.1×8.8888
=9876.34568
5)=1.11×(9.99×2+3×3.34)
=1.11×(19.98+10.02)
=1.11×30
=33.3
能不能写出过程?
求其它几道
追答第三道
①=(12.6/1.4)*(7.6/1.9)*(2.32/2.9)=9*4*0.8=28.2
②=777.77*22.222+22.222*333.33-333.33*44.4444
=777.77*22.222-22.222*333.33
=22.222*(777.77-333.33
=22.222*444.44
=9876.34568
③=3.33*6.66+3.33*3.34=3.33*(6.66+3.34)=33.3