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(2012•东莞模拟)计算下列各题.5025-2940÷28×3745÷((35−14)÷710)4.8×45+6.2÷114-0.8.
题目详情
(2012•东莞模拟)计算下列各题.
5025-2940÷28×37
÷((
−
)÷
)
4.8×
+6.2÷1
-0.8.
5025-2940÷28×37
4 |
5 |
3 |
5 |
1 |
4 |
7 |
10 |
4.8×
4 |
5 |
1 |
4 |
▼优质解答
答案和解析
(1)5025-2940÷28×37,
=5025-105×37,
=5025-3885,
=1140;
(2)
÷[(
-
)÷
],
=
÷[
÷
],
=
÷[
×
],
=
÷
,
=
×2,
=
;
(3)4.8×
+6.2÷1
-0.8,
=4.8×
+6.2×
-0.8,
=4.8×0.8+6.2×0.8-0.8,
=(4.8+6.2-1)×0.8,
=10×0.8,
=8.
=5025-105×37,
=5025-3885,
=1140;
(2)
4 |
5 |
3 |
5 |
1 |
4 |
7 |
10 |
=
4 |
5 |
7 |
20 |
7 |
10 |
=
4 |
5 |
7 |
20 |
10 |
7 |
=
4 |
5 |
1 |
2 |
=
4 |
5 |
=
8 |
5 |
(3)4.8×
4 |
5 |
1 |
4 |
=4.8×
4 |
5 |
4 |
5 |
=4.8×0.8+6.2×0.8-0.8,
=(4.8+6.2-1)×0.8,
=10×0.8,
=8.
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