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49乘以99加49的简便运算 999乘12加33乘64简便运算
999乘12加33乘64简便运算 999乘12加33乘64简便运算999x12+33x64=(1000-1)x12+(30+3)x64=12000-12+1920+192=12000-12+2112=
999乘12加33乘64简便运算
999乘12加33乘64简便运算
999x12+33x64
=(1000-1)x12+(30+3)x64
=12000-12+1920+192
=12000-12+2112
=12000+2100
=14100
1.666乘333加778乘999=?(简便运算) 2.999乘9999加19999=?(简便运算)
(1)1.666x333+778x999
=222x(3x333)+778x999
=222x999+778x999
=(222+778)x999
=999000
(2)999x9999+19999
=999x9999+9999+10000
=9999x(999+1)+10000
=9999000+10000
=10009000
999乘664加333乘1008简便运算。
999乘664加333乘1008简便运算
999乘664加333乘1008
=999*664+333*3*336
=999*(664+336)
=999*1000
=999000
999乘222加333乘334的简便运算
999×222+333×334
=(333×3)×222+333×334
=333×(3×222)+333×334
=333×666+333×334
=333×(666+334)
=333×1000
=333000
57乘33加67乘57简便运算
57x33+67x57
=(33+67)x57
=100x57
=5700
谢谢,请采纳
66乘54加33乘92简便运算
66×54+33×92
=66×54+33×2×46
=66×54+66×46
=66×(54+46)
=66×100
=6600
33乘66加18乘99 简便运算
简便运算
3×66+18×99
=6×33+54×33
=(6+54)×33
=60×33
=1980
299乘33加33的简便运算
=299*33+33*1
=(299+1)*33
=300*33
=9900

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