题目内容

用递等式计算.
(1)
5
6
÷
1
4
×
3
5
(2)48048÷12+88
(3)9÷(
7
9
-
2
3
)×3
(4)(1-0.8×
3
4
)÷
4
5
(1)
5
6
÷
1
4
×
3
5

=
10
3
×
3
5

=2;

(2)48048÷12+88,
=4004+88,
=4092;

(3)9÷(
7
9
-
2
3
)×3,
=9÷
1
9
×3,
=81×3,
=243;

(4)(1-0.8×
3
4
)÷
4
5

=(1-0.6)÷
4
5

=0.4÷
4
5

=0.5.
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