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用科学合理方法计算.(84%-13%)÷71;0.75×(815+49);34÷712×89;45÷1513+215×45.
题目详情
用科学合理方法计算.
(84%-13%)÷71; 0.75×(
+
);
÷
×
;
÷
+
×
.
(84%-13%)÷71; 0.75×(
8 |
15 |
4 |
9 |
3 |
4 |
7 |
12 |
8 |
9 |
4 |
5 |
15 |
13 |
2 |
15 |
4 |
5 |
▼优质解答
答案和解析
(1)(84%-13%)÷71
=0.71÷71
=0.01
(2)0.75×(
+
)
=
×
=
(3)
÷
×
=
×
×
=
(4)
÷
+
×
=
×
+
×
=
×(
+
)
=
×1
=
=0.71÷71
=0.01
(2)0.75×(
8 |
15 |
4 |
9 |
=
3 |
4 |
44 |
45 |
=
11 |
15 |
(3)
3 |
4 |
7 |
12 |
8 |
9 |
=
3 |
4 |
12 |
7 |
8 |
9 |
=
8 |
7 |
(4)
4 |
5 |
15 |
13 |
2 |
15 |
4 |
5 |
=
4 |
5 |
13 |
15 |
2 |
15 |
4 |
5 |
=
4 |
5 |
13 |
15 |
2 |
15 |
=
4 |
5 |
=
4 |
5 |
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