=_________. |
|1﹣|++( )﹣2+sin60 °﹣cos30 °= _________ |
(﹣1)2++30+﹣|﹣4|=_________. |
=_________. |
=_________. |
=_________. |
()0+﹣=_________. |
=_________. |
=_________. |
=_________. |
﹣3+=_________. |
=_________. |
(1)+﹣﹣=_________; (2)2+﹣10=_________(结果保留2位有效数字). |
(1)计算下列各式: ①x=_________,=_________; ②=_________,x=_________; ③x=_________,=_________; (2)通过上面的计算,你一定有所体会吧,请计算: =_________. |
=_________ |
=_________. |
将一个半径为10cm的圆柱形容器里的药液,倒进一个底面是正方形的长方体容器内,如果药液在两个容器里高度是一样的,那么底面是正方形的容器的底面边长是 _________ .(结果保留3个有效数字) |
+( )﹣1﹣(﹣)0﹣2tan45°= _________ |
=_________ |
(1)9﹣13+16= _________ ; (2)=_________; (3)=_________; (4)=_________. |
=_________. |
(1)(2+)2﹣(2﹣)2=_________; (2)9﹣712+5=_________; (3)|1﹣|+|﹣|+|﹣2|=_________. |
已知三个互不相等的有理数,既可以表示为1,a,a+b的形式,又可以表示0,,b的形式,试则a2007b2008的值=_________ |
()﹣1+|﹣3|﹣23= _________ |
=_________ |
(1)+﹣=_________; (2)(﹣﹣)x(﹣2)= . |
(﹣)2﹣2+(﹣1)2004(1+)2005+|1﹣|=_________ |
化简:(1)=_________. (2)(+)(﹣)=_________. |
=_________ |