333*6.66+999*7.78怎么巧算
333*6.66+999*7.78怎么巧算
333*6.66+999*7.78
=333*3*2.22+999*7.78
=999*2.22+999*7.78
=999*(2.22+7.78)
=999*10
=9990
999乘7.78加333乘6.66
999*7.78+333*6.66
=999*7.78+333*2.22*3
=999*(7.78+2.22)
=999*10
=9990
999*333*333=? 巧算
999*333*333
=999*999*999/3/3
=999*999*999/9
=(1000-1)*(1000-1)*(1000-1)/9
=997002999/9
=110778111
999*222 *333*234怎么巧算
999*222 +333*234怎么巧算
999*222 +333*234
=333*3*222+333*234
=333*(666+234)
=333*900
=299700
333×999巧算
333x1000=333000-333
=332667
73*333+999*9怎么巧算
73×333+999×9
=73×333+333×3×9
=333×(73+27)
=333×100
=33300
999乘500加333乘500怎么巧算
999乘500加333乘500
=333x3x500+333x500
=333x(1500+500)
=333x2000
=666000
333×17+999×27+666怎么巧算
333×17+999×27+666
=333×17+333×3×27+333×2
=333×(17+3×27+2)
=333×(17+81+2)
=333×100
=33300
希望可以帮到你
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333×9+999×7巧算
333×9+999×7
=333×3×3+999×7
=999×3+999×7
=999×(3+7)
=999×10
=9990
333*52+999*16怎么巧算。急!
解:333*52+999*16
=333(52+16*3)
=333×(52+48)
=333×100
=33300