问题 解答题
脱式计算.
3375÷27×12(0.75+10.2)÷0.25×25%(4
4
5
-1.6×
3
4
)÷4
1
2
2
8
9
×[1
3
4
-(
7
16
-
1
4
)].
答案

(1)3375÷27×12,

=125×12,

=1500;

(2)(0.75+10.2)÷0.25×25%,

=10.95÷0.25×0.25,

=10.95÷(0.25÷0.25),

=10.95;

(3)(4

4
5
-1.6×
3
4
)÷4
1
2

=(4

4
5
-1.2)÷4
1
2

=3.6÷4

1
2

=0.8;

(4)2

8
9
×[1
3
4
-(
7
16
-
1
4
)],

=2

8
9
×[1
3
4
-
3
16
],

=2

8
9
×1
9
16

=

325
72

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