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脱式计算38×4÷38×4(36+14)×141-213÷813-3425%×32+14×6860×14÷(1-25%)240×(1-20%)-50×20%

题目详情
脱式计算
3
8
×4÷
3
8
×4
(36+
1
4
)×
1
4
1-
2
13
÷
8
13
-
3
4
25%×32+
1
4
×68
60×
1
4
÷(1-25%)
240×(1-20%)-50×20%
▼优质解答
答案和解析
(1)
3
8
×4÷
3
8
×4
=(
3
8
÷
3
8
)×(4×4)
=1×16
=16;

(2)(36+
1
4
)×
1
4

=36×
1
4
+
1
4
×
1
4

=9+
1
16

=9
1
16


(3)1-
2
13
÷
8
13
-
3
4

=1-
1
4
-
3
4

=1-(
1
4
+
3
4

=1-1
=0;

(4)25%×32+
1
4
×68
=0.25×32+0.25×68
=0.25×(32+68)
=0.25×100
=25;

(5)60×
1
4
÷(1-25%)
=60×
1
4
÷0.75
=15÷0.75
=20;

(6)240×(1-20%)-50×20%
=240×0.8-50×20%
=192-10
=182.