题目内容

看谁都能算对!(能简算的请写出简算过程)
86×0.75+14×75%

8.96-5.29-1.71-1.96
5
6
-[(
1
5
+
1
3
8
9
]
13
25
+
8
17
)×
3
2
+(
12
25
+
9
17
)×
3
2
(1)86×0.75+14×75%,
=(86+14)×0.75,
=100×0.75,
=75;

(2)8.96-5.29-1.71-1.96,
=(8.96-1.96)-(5.29+1.71),
=7-7,
=0;

(3)
5
6
-
[(
1
5
+
1
3
÷
8
9
],
=
5
6
-[
8
15
÷
8
9
],
=
5
6
-
3
5

=
7
30


(4)(
13
25
+
8
17
)×
3
2
+(
12
25
+
9
17
)×
3
2

=(
13
25
+
8
17
+
12
25
+
9
17
)×
3
2

=[(
13
25
+
12
25
)+(
8
17
+
9
17
)]×
3
2

=2×
3
2

=3.
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