题目内容

脱式计算
1375+450÷18×25 [2-(
5
3
-
3
2
)÷
17
12
51
8
3.45-(4.75-0.55×4)
(1)1375+450÷18×25,
=1375+25×25,
=1375+625,
=2000;

(2)[2-(
5
3
-
3
2
)÷
17
12
51
8

=[2-
1
6
×
12
17
51
8

=[2-
2
17
51
8

=
32
17
×
51
8

=12;

(3)3.45-(4.75-0.55×4),
=3.45-(4.75-2.2),
=3.45-2.55,
=0.9.
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