题目内容

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
)]
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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