(1)0-(-3.85)(2)-1-〔1-(1-0.5×13)〕×6(3)(?81)÷94×49÷(?16)(4)491516×(?16)(5)(12

2025-06-29 13:32:58
推荐回答(1个)
回答1:

(1)0-(-3.85)=3.85;

(2)-1-[1-(1-0.5×

1
3
)]×6
=-1-[1-1+
1
6
]×6
=-1-1=-2;

(3 )(?81)÷
9
4
×
4
9
÷(?16)

=81×
4
9
×
4
9
×
1
16

=1;

(4)49
15
16
×(?16)

=-(50-
1
16
)×16
=-(800-1)
=-799;

(5)(
1
2
-
5
9
+
7
12
)×(-36)
=-(18-20+21)
=-19;

(6)?7×(?
22
7
)+26×(?
22
7
)?2×
22
7

=(7-26-2)×
22
7

=-21×
22
7

=-66.