Question

79乘25加25怎么简便 快快

100财富值呢！ 加油
63乘8加91乘63加63怎么简便
1999加999乘999怎么简便360乘26加260乘64怎么简便

Answer 1

提取公因式
79X25+25
=(79+1)X25
=80X25=2000

63x8+91x63+63
=63x(8+91+1)
=63x100=6300

1999+999x999
=1000+999+999x999
=1000+999x(999+1)
=1000+999000
=1000000

360x26+260x64
=(100+260)x26+260x64
=100x26+260x26+260x64
=100x26+260x100
=286x100
=28600

Answer 2

79乘25加25
=79x25+25
=25x(79+1)
=25x80
=2000
希望对你有帮助

Answer 3

=(79+1)×25
=80×25
=2000

追问

63乘8加91乘63加63怎么简便

追答

=63×(8+91+1)
=63×100
=6300

追问

1999加999乘999怎么简便360乘26加260乘64怎么简便

追答

=1000+999×（1+999)
=1000+999000
=1000000

=360×26+26×640
=26×(360+640)
=26×1000
=26000

Answer 4

①=(79+1)×25
=80×25
=2000
②=63×(8+91+1)
=63×100
=6300③1999+（1000-1）*999=1999+999000-999=1000000

Answer 5

79×25+25
=79×（25+25）
=79×50
=自己算吧