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能简算的要简算(1)3.2×1.25×0.25(2)3150×101-3150(3)(78-516)×(59+23)
题目详情
31 |
50 |
31 |
50 |
(3)(
7 |
8 |
5 |
16 |
5 |
9 |
2 |
3 |
31 |
50 |
31 |
50 |
(3)(
7 |
8 |
5 |
16 |
5 |
9 |
2 |
3 |
31 |
50 |
7 |
8 |
5 |
16 |
5 |
9 |
2 |
3 |
7 |
8 |
5 |
16 |
5 |
9 |
2 |
3 |
5 |
16 |
5 |
9 |
2 |
3 |
5 |
9 |
2 |
3 |
2 |
3 |
▼优质解答
答案和解析
(1)3.2×1.25×0.25,
=0.8×4×1.25×0.25,
=(0.8×1.25)×(4×0.25),
=1×1,
=1;
(2)
×101-
,
=
×(101-1),
=
×100,
=62;
(3)(
-
)×(
+
),
=
×
,
=
.
31 31 3150 50 50×101-
,
=
×(101-1),
=
×100,
=62;
(3)(
-
)×(
+
),
=
×
,
=
.
31 31 3150 50 50,
=
×(101-1),
=
×100,
=62;
(3)(
-
)×(
+
),
=
×
,
=
.
31 31 3150 50 50×(101-1),
=
×100,
=62;
(3)(
-
)×(
+
),
=
×
,
=
.
31 31 3150 50 50×100,
=62;
(3)(
-
)×(
+
),
=
×
,
=
.
7 7 78 8 8-
)×(
+
),
=
×
,
=
.
5 5 516 16 16)×(
+
),
=
×
,
=
.
5 5 59 9 9+
),
=
×
,
=
.
2 2 23 3 3),
=
×
,
=
.
9 9 916 16 16×
,
=
.
11 11 119 9 9,
=
.
11 11 1116 16 16.
=0.8×4×1.25×0.25,
=(0.8×1.25)×(4×0.25),
=1×1,
=1;
(2)
31 |
50 |
31 |
50 |
=
31 |
50 |
=
31 |
50 |
=62;
(3)(
7 |
8 |
5 |
16 |
5 |
9 |
2 |
3 |
=
9 |
16 |
11 |
9 |
=
11 |
16 |
31 |
50 |
31 |
50 |
=
31 |
50 |
=
31 |
50 |
=62;
(3)(
7 |
8 |
5 |
16 |
5 |
9 |
2 |
3 |
=
9 |
16 |
11 |
9 |
=
11 |
16 |
31 |
50 |
=
31 |
50 |
=
31 |
50 |
=62;
(3)(
7 |
8 |
5 |
16 |
5 |
9 |
2 |
3 |
=
9 |
16 |
11 |
9 |
=
11 |
16 |
31 |
50 |
=
31 |
50 |
=62;
(3)(
7 |
8 |
5 |
16 |
5 |
9 |
2 |
3 |
=
9 |
16 |
11 |
9 |
=
11 |
16 |
31 |
50 |
=62;
(3)(
7 |
8 |
5 |
16 |
5 |
9 |
2 |
3 |
=
9 |
16 |
11 |
9 |
=
11 |
16 |
7 |
8 |
5 |
16 |
5 |
9 |
2 |
3 |
=
9 |
16 |
11 |
9 |
=
11 |
16 |
5 |
16 |
5 |
9 |
2 |
3 |
=
9 |
16 |
11 |
9 |
=
11 |
16 |
5 |
9 |
2 |
3 |
=
9 |
16 |
11 |
9 |
=
11 |
16 |
2 |
3 |
=
9 |
16 |
11 |
9 |
=
11 |
16 |
9 |
16 |
11 |
9 |
=
11 |
16 |
11 |
9 |
=
11 |
16 |
11 |
16 |
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