75X27十19X25 31x870十13X310 64X54一32X8怎简便计算

答案:6 悬赏:60 手机版

解决时间 2021-02-03 17:49

提问者网友：我一贱你就笑
2021-02-02 23:32

最佳答案

五星知识达人网友：老鼠爱大米
2021-02-03 00:08

25x3x27+19x25=25x(3x27+19)=2500
310x87+13x310=310x(87+13)=3100
32x2x54-32x8=32x(2x54-8)=3200追答好评追问3X27. 3从哪儿来的追答75=25x3追问哪15X5也等于75追答你为什么看了不采纳，跪求好评！真的，真的，求你了！

全部回答

1楼网友：往事埋风中
2021-02-03 04:28

75X27十19X25
=75x19+25x19+75x8
=1900+600
=2500
31x870十13X310
=31x(870+130)
=31000
64X54一32X8
=64x4-32x8+64x50
=3200

2楼网友：爱难随人意
2021-02-03 03:47

75X27十19X25＝25X3X27+19X25＝25X（27X3+19）＝25X100＝2500
31x870十13X310＝31X（870+13X10）＝31X1000＝31000
64X54一32X8＝32X2X54-32X8＝32X（2X54-8）＝32X100＝3200

3楼网友：大漠
2021-02-03 03:28

75X27十19X25
=25X(51+19)
=25X70
=1750
31x870十13X310
=31X(870+130)
=31X1000
=31000
64X54一32X8
=32X(108-8)
=3200

4楼网友：一叶十三刺
2021-02-03 02:26

75X27十19X25
=3x25X27十19X25
=25(3X27十19)
=25x100
=2500

31x870十13X310
=31x870十13X31x10
=31(870十13X10)
=31x1000
=31000
64X54一32X8
=2x32X54一32X8
=32(2X54-8)
=32x100
=3200追问2从哪儿来的追答64=2x32啊追问谢谢追答小喇叭为你解答，88

5楼网友：刀戟声无边
2021-02-03 01:15

（1）原式=3×27×25+19x25
=81×25+19x25
=（81+19）x25
=100x25
=2500
（2）31x870十13X310
=310x87+13x310
=310x(87+13)
=310x100
=31000
(3)64*54-32*8
64*54-64*4
=64*(54-4)
=54*50
= 3 200

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