巧算:599996+49997+3998+407+89急
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巧算:599996+49997+3998+407+89急巧算:599996+49997+3998+407+89急巧算:599996+49997+3998+407+89急599996+49997+399
巧算:599996+49997+3998+407+89急
巧算:599996+49997+3998+407+89
急
巧算:599996+49997+3998+407+89急
599996+49997+3998+407+89
=600000-4+50000-3+4000-2+400+7+100-11
=654500-4-3-2+7-11
=654500-13
=654487
599996+49997+3998+407+89
=600000-4+50000-3+4000-2+400+7+90-1
=654490-3
=654487
巧算:599996+49997+3998+407+89急
599996+49997+3998+299+31
6999995+599996+49997+3998+407+89
599996+49997+3998+299+10怎么简便
6999995+599996+49997+3998+407+89怎么简便
599996 49997 3998 407 89怎样算简便?
简算(过程)3.48-1.79= 2273-665-348= 599996+49997+3998+407+89=100+99-98-97+96+95-94-93+.+8+7-6-5+4+3-2-1=
数学简便方法,每题好简便方法.1-4583-999 2- 6999995+599996+49997+3998+89 3- 550000/121*11 4- 123*456/789/456*789/123 5- 7/1.25 6- 8.7*9.9 7- 1.25*66.875+1250*0.054375+125*6.7875 8- 5.5*101+45*9.9 9- 98989898*99999999/1010101/11111111 10- 1
巧算!
巧算,
50000分之499994乘49997等于多少?
六年级1999/3998+5997/5998
1999²+2001²-3998X2001
4538加3998怎么简便计算
5492+3998(简便计算) = =
5996+4997+3998+2999+1010=
7、巧算?
这题咋做,巧算