问题 解答题
①957-420÷60②38+3.4+122+6.6③25×(4.41-16.4÷40)
④4.8×3.27+5.73×4.8+4.8(
5
12
+
5
8
-
5
6
)×24
4
15
÷[1-(
2
3
-
3
5
)]
答案

①957-420÷60,

=957-7,

=950;

②38+3.4+122+6.6,

=(38+122)+(3.4+6.6),

=160+10,

=170;

③25×(4.41-16.4÷40),

=25×(4.41-0.41),

=25×4,

=100;

④4.8×3.27+5.73×4.8+4.8,

=4.8×(3.27+5.73+1),

=4.8×10,

=48;

(

5
12
+
5
8
-
5
6
)×24,

=

5
12
×24+
5
8
×24-
5
6
×24,

=10+15-20,

=25-20,

=5;

4
15
÷[1-(
2
3
-
3
5
)],

=

4
15
÷[1-
1
15
],

=

4
15
÷
14
15

=

2
7

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