问题 解答题
脱式计算
275+25÷5-100
76×1.04+1.04×25-1.04
7
12
-
3
8
)×24-
5
9

0.75×
5
9
+
3
4
×
4
9
答案

(1)275+25÷5-100,

=275+5-100,

=280-100,

=180;

(2)76×1.04+1.04×25-1.04,

=(76+25-1)×1.04,

=100×1.04,

=104;

(3)(

7
12
-
3
8
)×24-
5
9

=

7
12
×24-
3
8
×24-
5
9

=14-9-

5
9

=5-

5
9

=4

4
9

(4)0.75×

5
9
+
3
4
×
4
9

=

3
4
×(
5
9
+
4
9
),

=

3
4
×1,

=

3
4

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