3 运动定律与简便运算
下面各题,怎样算简便就怎样算
(1)
﹣(
+
)×
(2)(1﹣75%)÷(1+
) (3)
+
(4)(
﹣
÷2)×
(5)59÷[1÷(
﹣9%)] (6)
.
谁做得对,奖他(她)一面
.
(1)1
﹣
×
=1×
=
1
﹣
×
=1
﹣
=1
(2)72×
÷72×
=72×
×
=
72×
÷72×
=(72×
)÷(72×
)
=1
.
下面各题,怎样算简便就怎样算
(1)
﹣(
+
)×
(2)(1﹣75%)÷(1+
) (3)
+
(4)(
﹣
÷2)×
(5)59÷[1÷(
﹣9%)] (6)
.
谁做得对,奖他(她)一面
.
(1)1
﹣
×
=1×
=
1
﹣
×
=1
﹣
=1
(2)72×
÷72×
=72×
×
=
72×
÷72×
=(72×
)÷(72×
)
=1
.
试题篮
()