用简便方法计算:(g)图5×图+图5×5-图0%(2)(g图-g4+图8)÷g24(图)g999×g9992000(4)g5.9-g.7+4.g-8.图.-数学
题文
用简便方法计算: (g)
(2)(
(图)g999×
(4)g5.9-g.7+4.g-8.图. |
答案
(1)
=
=
=
=6; (4)(
=(
=
=8-6+9, =7; (3)1999×
=(4上上上-1)×
=4上上上×
|
题文
用简便方法计算: (g)
(2)(
(图)g999×
(4)g5.9-g.7+4.g-8.图. |
答案
(1)
=
=
=
=6; (4)(
=(
=
=8-6+9, =7; (3)1999×
=(4上上上-1)×
=4上上上×
|