Question

简便计算数学题

1994+997乘997
递等式

Answer 1

你的原式=
997*2+997*997=997*999=997*(1000-1)=997000-997=996003

Answer 2

1994+997乘997
=997*2+997*997
=997*(997+2)
=997*999
=997*1000-997*1
=997000-997
=996003

Answer 3

1994=997X2 1994+997乘997 =997x(2+997)=997x(1000-1)=997000-997=996003

Answer 4

1994+997*997
=997*2+997*997
=997*999
=997*(1000-1)
=997000-997
=996003

Answer 5

1994+(1000-3)*997
=1994+997000-3*(1000-3)
=1994+997000-3000+9
=997000-1000
=996000