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(2012•隆昌县一模)计算,能简算的要简算(1)375+450÷18×25(2)4.38×5.6+56.2×0.56(3)1110-14-34+910(4)415÷(139-23×56)
题目详情
(2012•隆昌县一模)
计算,能简算的要简算 (1)375+450÷18×25 | (2)4.38×5.6+56.2×0.56 | ||||||||||||||||
(3)
| (4)
|
▼优质解答
答案和解析
(1)375+450÷18×25,
=375+25×25,
=375+625,
=1000.
(2)4.38×5.6+56.2×0.56,
=4.38×5.6+5.62×5.6,
=(4.38+5.62)×5.6,
=10×5.6,
=56;
(3)
-
-
+
,
=(
+
)-(
+
),
=2-1,
=1;
(4)
÷(
-
×
),
=
÷(
-
),
=
÷
,
=
.
=375+25×25,
=375+625,
=1000.
(2)4.38×5.6+56.2×0.56,
=4.38×5.6+5.62×5.6,
=(4.38+5.62)×5.6,
=10×5.6,
=56;
(3)
11 |
10 |
1 |
4 |
3 |
4 |
9 |
10 |
=(
11 |
10 |
9 |
10 |
1 |
4 |
3 |
4 |
=2-1,
=1;
(4)
4 |
15 |
13 |
9 |
2 |
3 |
5 |
6 |
=
4 |
15 |
13 |
9 |
5 |
9 |
=
4 |
15 |
8 |
9 |
=
3 |
10 |
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