问题
解答题
计算: (1)(-36
(2)-13+0.5×
|
答案
(1)(-36
)÷(-9)9 11
=36
×9 11 1 9
=(36+
)×9 11 1 9
=36×
+1 9
×9 11 1 9
=4
(或1 11
) 45 11
(注:方法不同,但答案正确也给分)
(2)-13+0.5×
÷(-2 9
)21 3
=-1+
×1 2
×92 9
=-1+1
=0.