问题
解答题
①计算:2+100÷22×(-
②计算:3÷
|
答案
①2+100÷22×(-
)-11 5
=2+100÷4×(-
)-11 5
=2+25×(-
)-11 5
=2-5-1
=-4;
②3÷
-(-1+11 3
)×61 2
=9-
×61 2
=9-3
=6.
①计算:2+100÷22×(-
②计算:3÷
|
①2+100÷22×(-
)-11 5
=2+100÷4×(-
)-11 5
=2+25×(-
)-11 5
=2-5-1
=-4;
②3÷
-(-1+11 3
)×61 2
=9-
×61 2
=9-3
=6.