数学题，简便的方法计算，不能简便的话按顺序计算

来源：百度知道 编辑：UC知道 时间：2024/07/04 10:14:10
/=除以.*等于乘以.480/（74-34） 126*5-780/6
= =
= =
450-225/5+135 124*5+169/13
= =
= =
99*425 304+306/17-298
= =
= =
101*79-79 （6409+23*17）/68
= =
= =
199*490 256*301
= =
= =
16*（125*34+88*125）
=
=
418*201 25*64*125
= =
= =
4000/125/4/8 999*778+333+666
= =
= =
14*44+12*28+32*14 840*39/84
= =
= =
64.68-27.75 24.96+36.78
= =
=

480/（74-34） 126*5-780/6
= 480/40 =630-130
= 12 =500

450-225/5+135 124*5+169/13
= 450-45+135 =620+13
=540 =633

99*425 304+306/17-298
=（100-1）*425 =304+18-298
= 100*425-1*425 =322-298
=42500-425 =24
=42075

101*79-79 （6409+23*17）/68
=（101-1）*79 =（ 6409+391）/68
=100*79 =6800/68
=7900 =100

199*490 256*301
= （200-1）*490 = 256*（300+1）
= 200*490-1*490 =256*300+256*1
=98000-490 =76800+256
=97510 =77056

16*（125*34+88*125）
=16*[125*（134+88）]
= 16*（125*222）
=16*125*222
=2*（8*125）*222
=2*1000*222
=444000

4000/125/4/8 999*778+333+666
=（4000*