问题 解答题
脱式计算.
8
5
×
25
24

1-
5
14
÷
5
7

(2.25×4.8+77.5×0.48
[1-(
1
2
-
1
3
)]×36.
答案

(1)2÷

8
5
×
25
24

=

5
4
×
25
24

=1

29
96

(2)1-

5
14
÷
5
7

=1-

1
2

=

1
2

(3)2.25×4.8+77.5×0.48

=(2.25+7.75)×4.8

=10×4.8

=48;

(4)[1-(

1
2
-
1
3
)]×36

=[1-

1
6
]×36

=

5
6
×35

=30.

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