简便运算

2025-06-27 01:34:02
推荐回答(3个)
回答1:

1 99999*77778+33333*66666
解:原式=11111*9(11111*7+1)+11111*11111*18
=11111*11111*63+11111*11111*18+11111*9
=11111*11111*81+11111*9
=11111*(81*11111+9)
=11111*900000
=9999900000

2 77*13+255*999+510
解:原式=1001+255*999+255*2
=1001+255*1001
=(255+1)*1001
=256*1001
=256256

回答2:

99999*77778+33333*66666
=99999*77778+33333*3*22222
=99999*77778+99999*22222
=99999*(77778+22222)
=99999*100000
=9999900000

77*13+255*999+510
=77*11+77*2+255*999+255*2
=77*11+154+255*1001
=77*11+154+255*(1000+1)
=77*11+154+255*1000+255*1
=847+154+255000+255
=1256+255000
=256256

回答3:

99999*77778+33333*66666=99999*77778+33333*3*22222=
99999*77778+99999*22222
=99999*(77778+22222)
=99999*100000
=9999900000