问题 解答题
递等式计算:
360-225÷15×18
3
5
÷
5
6
×
8
15
4.72-1.16-2.84
1
9
+
1
8
÷
3
4
+
8
9
答案

(1)360-225÷15×18,

=360-15×18,

=360-270,

=90;

(2)

3
5
÷
5
6
×
8
15

=

18
25
×
8
15

=

48
125

(3)4.72-1.16-2.84,

=4.72-(1.16+2.84),

=4.72-4,

=0.72;

(4)

1
9
+
1
8
÷
3
4
+
8
9

=

1
9
+
1
6
+
8
9

=

1
9
+
8
9
+
1
6

=1+

1
6

=1

1
6

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