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怎样简便就怎样算.(1)3-712-512(2)57×38+58×57(3)815×516+527÷109(4)18×(49+56)
题目详情
怎样简便就怎样算.
(1)3-
-
(2)
×
+
×
(3)
×
+
÷
(4)18×(
+
)
-
(2)
×
+
×
(3)
×
+
÷
(4)18×(
+
)
7 7 12 12
(2)
×
+
×
(3)
×
+
÷
(4)18×(
+
)
5 5 12 12
×
+
×
(3)
×
+
÷
(4)18×(
+
)
5 5 7 7
+
×
(3)
×
+
÷
(4)18×(
+
)
3 3 8 8
×
(3)
×
+
÷
(4)18×(
+
)
5 5 8 8
(3)
×
+
÷
(4)18×(
+
)
5 5 7 7
×
+
÷
(4)18×(
+
)
8 8 15 15
+
÷
(4)18×(
+
)
5 5 16 16
÷
(4)18×(
+
)
5 5 27 27
(4)18×(
+
)
10 10 9 9
+
)
4 4 9 9
)
5 5 6 6
(1)3-
7 |
12 |
5 |
12 |
(2)
5 |
7 |
3 |
8 |
5 |
8 |
5 |
7 |
(3)
8 |
15 |
5 |
16 |
5 |
27 |
10 |
9 |
(4)18×(
4 |
9 |
5 |
6 |
7 |
12 |
5 |
12 |
(2)
5 |
7 |
3 |
8 |
5 |
8 |
5 |
7 |
(3)
8 |
15 |
5 |
16 |
5 |
27 |
10 |
9 |
(4)18×(
4 |
9 |
5 |
6 |
7 |
12 |
5 |
12 |
(2)
5 |
7 |
3 |
8 |
5 |
8 |
5 |
7 |
(3)
8 |
15 |
5 |
16 |
5 |
27 |
10 |
9 |
(4)18×(
4 |
9 |
5 |
6 |
5 |
12 |
5 |
7 |
3 |
8 |
5 |
8 |
5 |
7 |
(3)
8 |
15 |
5 |
16 |
5 |
27 |
10 |
9 |
(4)18×(
4 |
9 |
5 |
6 |
5 |
7 |
3 |
8 |
5 |
8 |
5 |
7 |
(3)
8 |
15 |
5 |
16 |
5 |
27 |
10 |
9 |
(4)18×(
4 |
9 |
5 |
6 |
3 |
8 |
5 |
8 |
5 |
7 |
(3)
8 |
15 |
5 |
16 |
5 |
27 |
10 |
9 |
(4)18×(
4 |
9 |
5 |
6 |
5 |
8 |
5 |
7 |
(3)
8 |
15 |
5 |
16 |
5 |
27 |
10 |
9 |
(4)18×(
4 |
9 |
5 |
6 |
5 |
7 |
8 |
15 |
5 |
16 |
5 |
27 |
10 |
9 |
(4)18×(
4 |
9 |
5 |
6 |
8 |
15 |
5 |
16 |
5 |
27 |
10 |
9 |
(4)18×(
4 |
9 |
5 |
6 |
5 |
16 |
5 |
27 |
10 |
9 |
(4)18×(
4 |
9 |
5 |
6 |
5 |
27 |
10 |
9 |
(4)18×(
4 |
9 |
5 |
6 |
10 |
9 |
4 |
9 |
5 |
6 |
4 |
9 |
5 |
6 |
5 |
6 |
▼优质解答
答案和解析
(1)3-
-
=3-(
+
)
=3-1
=2;
(2)
×
+
×
=
×(
+
)
=
×1
=
;
(3)
×
+
÷
=
+
=
;
(4)18×(
+
)
=18×
+18×
=8+15
=23.
7 7 712 12 12-
=3-(
+
)
=3-1
=2;
(2)
×
+
×
=
×(
+
)
=
×1
=
;
(3)
×
+
÷
=
+
=
;
(4)18×(
+
)
=18×
+18×
=8+15
=23.
5 5 512 12 12
=3-(
+
)
=3-1
=2;
(2)
×
+
×
=
×(
+
)
=
×1
=
;
(3)
×
+
÷
=
+
=
;
(4)18×(
+
)
=18×
+18×
=8+15
=23.
7 7 712 12 12+
)
=3-1
=2;
(2)
×
+
×
=
×(
+
)
=
×1
=
;
(3)
×
+
÷
=
+
=
;
(4)18×(
+
)
=18×
+18×
=8+15
=23. +
5 5 512 12 12)
=3-1
=2;
(2)
×
+
×
=
×(
+
)
=
×1
=
;
(3)
×
+
÷
=
+
=
;
(4)18×(
+
)
=18×
+18×
=8+15
=23.
5 5 57 7 7×
+
×
=
×(
+
)
=
×1
=
;
(3)
×
+
÷
=
+
=
;
(4)18×(
+
)
=18×
+18×
=8+15
=23.
3 3 38 8 8+
×
=
×(
+
)
=
×1
=
;
(3)
×
+
÷
=
+
=
;
(4)18×(
+
)
=18×
+18×
=8+15
=23.
5 5 58 8 8×
=
×(
+
)
=
×1
=
;
(3)
×
+
÷
=
+
=
;
(4)18×(
+
)
=18×
+18×
=8+15
=23.
5 5 57 7 7
=
×(
+
)
=
×1
=
;
(3)
×
+
÷
=
+
=
;
(4)18×(
+
)
=18×
+18×
=8+15
=23.
5 5 57 7 7×(
+
)
=
×1
=
;
(3)
×
+
÷
=
+
=
;
(4)18×(
+
)
=18×
+18×
=8+15
=23.
3 3 38 8 8+
)
=
×1
=
;
(3)
×
+
÷
=
+
=
;
(4)18×(
+
)
=18×
+18×
=8+15
=23.
5 5 58 8 8)
=
×1
=
;
(3)
×
+
÷
=
+
=
;
(4)18×(
+
)
=18×
+18×
=8+15
=23.
5 5 57 7 7×1
=
;
(3)
×
+
÷
=
+
=
;
(4)18×(
+
)
=18×
+18×
=8+15
=23.
5 5 57 7 7;
(3)
×
+
÷
=
+
=
;
(4)18×(
+
)
=18×
+18×
=8+15
=23.
8 8 815 15 15×
+
÷
=
+
=
;
(4)18×(
+
)
=18×
+18×
=8+15
=23.
5 5 516 16 16+
÷
=
+
=
;
(4)18×(
+
)
=18×
+18×
=8+15
=23.
5 5 527 27 27÷
=
+
=
;
(4)18×(
+
)
=18×
+18×
=8+15
=23.
10 10 109 9 9
=
+
=
;
(4)18×(
+
)
=18×
+18×
=8+15
=23.
1 1 16 6 6+
=
;
(4)18×(
+
)
=18×
+18×
=8+15
=23.
1 1 16 6 6
=
;
(4)18×(
+
)
=18×
+18×
=8+15
=23.
1 1 13 3 3;
(4)18×(
+
)
=18×
+18×
=8+15
=23.
4 4 49 9 9+
)
=18×
+18×
=8+15
=23.
5 5 56 6 6)
=18×
+18×
=8+15
=23.
4 4 49 9 9+18×
=8+15
=23.
5 5 56 6 6
=8+15
=23.
7 |
12 |
5 |
12 |
=3-(
7 |
12 |
5 |
12 |
=3-1
=2;
(2)
5 |
7 |
3 |
8 |
5 |
8 |
5 |
7 |
=
5 |
7 |
3 |
8 |
5 |
8 |
=
5 |
7 |
=
5 |
7 |
(3)
8 |
15 |
5 |
16 |
5 |
27 |
10 |
9 |
=
1 |
6 |
1 |
6 |
=
1 |
3 |
(4)18×(
4 |
9 |
5 |
6 |
=18×
4 |
9 |
5 |
6 |
=8+15
=23.
7 |
12 |
5 |
12 |
=3-(
7 |
12 |
5 |
12 |
=3-1
=2;
(2)
5 |
7 |
3 |
8 |
5 |
8 |
5 |
7 |
=
5 |
7 |
3 |
8 |
5 |
8 |
=
5 |
7 |
=
5 |
7 |
(3)
8 |
15 |
5 |
16 |
5 |
27 |
10 |
9 |
=
1 |
6 |
1 |
6 |
=
1 |
3 |
(4)18×(
4 |
9 |
5 |
6 |
=18×
4 |
9 |
5 |
6 |
=8+15
=23.
5 |
12 |
=3-(
7 |
12 |
5 |
12 |
=3-1
=2;
(2)
5 |
7 |
3 |
8 |
5 |
8 |
5 |
7 |
=
5 |
7 |
3 |
8 |
5 |
8 |
=
5 |
7 |
=
5 |
7 |
(3)
8 |
15 |
5 |
16 |
5 |
27 |
10 |
9 |
=
1 |
6 |
1 |
6 |
=
1 |
3 |
(4)18×(
4 |
9 |
5 |
6 |
=18×
4 |
9 |
5 |
6 |
=8+15
=23.
7 |
12 |
5 |
12 |
=3-1
=2;
(2)
5 |
7 |
3 |
8 |
5 |
8 |
5 |
7 |
=
5 |
7 |
3 |
8 |
5 |
8 |
=
5 |
7 |
=
5 |
7 |
(3)
8 |
15 |
5 |
16 |
5 |
27 |
10 |
9 |
=
1 |
6 |
1 |
6 |
=
1 |
3 |
(4)18×(
4 |
9 |
5 |
6 |
=18×
4 |
9 |
5 |
6 |
=8+15
=23. +
5 |
12 |
=3-1
=2;
(2)
5 |
7 |
3 |
8 |
5 |
8 |
5 |
7 |
=
5 |
7 |
3 |
8 |
5 |
8 |
=
5 |
7 |
=
5 |
7 |
(3)
8 |
15 |
5 |
16 |
5 |
27 |
10 |
9 |
=
1 |
6 |
1 |
6 |
=
1 |
3 |
(4)18×(
4 |
9 |
5 |
6 |
=18×
4 |
9 |
5 |
6 |
=8+15
=23.
5 |
7 |
3 |
8 |
5 |
8 |
5 |
7 |
=
5 |
7 |
3 |
8 |
5 |
8 |
=
5 |
7 |
=
5 |
7 |
(3)
8 |
15 |
5 |
16 |
5 |
27 |
10 |
9 |
=
1 |
6 |
1 |
6 |
=
1 |
3 |
(4)18×(
4 |
9 |
5 |
6 |
=18×
4 |
9 |
5 |
6 |
=8+15
=23.
3 |
8 |
5 |
8 |
5 |
7 |
=
5 |
7 |
3 |
8 |
5 |
8 |
=
5 |
7 |
=
5 |
7 |
(3)
8 |
15 |
5 |
16 |
5 |
27 |
10 |
9 |
=
1 |
6 |
1 |
6 |
=
1 |
3 |
(4)18×(
4 |
9 |
5 |
6 |
=18×
4 |
9 |
5 |
6 |
=8+15
=23.
5 |
8 |
5 |
7 |
=
5 |
7 |
3 |
8 |
5 |
8 |
=
5 |
7 |
=
5 |
7 |
(3)
8 |
15 |
5 |
16 |
5 |
27 |
10 |
9 |
=
1 |
6 |
1 |
6 |
=
1 |
3 |
(4)18×(
4 |
9 |
5 |
6 |
=18×
4 |
9 |
5 |
6 |
=8+15
=23.
5 |
7 |
=
5 |
7 |
3 |
8 |
5 |
8 |
=
5 |
7 |
=
5 |
7 |
(3)
8 |
15 |
5 |
16 |
5 |
27 |
10 |
9 |
=
1 |
6 |
1 |
6 |
=
1 |
3 |
(4)18×(
4 |
9 |
5 |
6 |
=18×
4 |
9 |
5 |
6 |
=8+15
=23.
5 |
7 |
3 |
8 |
5 |
8 |
=
5 |
7 |
=
5 |
7 |
(3)
8 |
15 |
5 |
16 |
5 |
27 |
10 |
9 |
=
1 |
6 |
1 |
6 |
=
1 |
3 |
(4)18×(
4 |
9 |
5 |
6 |
=18×
4 |
9 |
5 |
6 |
=8+15
=23.
3 |
8 |
5 |
8 |
=
5 |
7 |
=
5 |
7 |
(3)
8 |
15 |
5 |
16 |
5 |
27 |
10 |
9 |
=
1 |
6 |
1 |
6 |
=
1 |
3 |
(4)18×(
4 |
9 |
5 |
6 |
=18×
4 |
9 |
5 |
6 |
=8+15
=23.
5 |
8 |
=
5 |
7 |
=
5 |
7 |
(3)
8 |
15 |
5 |
16 |
5 |
27 |
10 |
9 |
=
1 |
6 |
1 |
6 |
=
1 |
3 |
(4)18×(
4 |
9 |
5 |
6 |
=18×
4 |
9 |
5 |
6 |
=8+15
=23.
5 |
7 |
=
5 |
7 |
(3)
8 |
15 |
5 |
16 |
5 |
27 |
10 |
9 |
=
1 |
6 |
1 |
6 |
=
1 |
3 |
(4)18×(
4 |
9 |
5 |
6 |
=18×
4 |
9 |
5 |
6 |
=8+15
=23.
5 |
7 |
(3)
8 |
15 |
5 |
16 |
5 |
27 |
10 |
9 |
=
1 |
6 |
1 |
6 |
=
1 |
3 |
(4)18×(
4 |
9 |
5 |
6 |
=18×
4 |
9 |
5 |
6 |
=8+15
=23.
8 |
15 |
5 |
16 |
5 |
27 |
10 |
9 |
=
1 |
6 |
1 |
6 |
=
1 |
3 |
(4)18×(
4 |
9 |
5 |
6 |
=18×
4 |
9 |
5 |
6 |
=8+15
=23.
5 |
16 |
5 |
27 |
10 |
9 |
=
1 |
6 |
1 |
6 |
=
1 |
3 |
(4)18×(
4 |
9 |
5 |
6 |
=18×
4 |
9 |
5 |
6 |
=8+15
=23.
5 |
27 |
10 |
9 |
=
1 |
6 |
1 |
6 |
=
1 |
3 |
(4)18×(
4 |
9 |
5 |
6 |
=18×
4 |
9 |
5 |
6 |
=8+15
=23.
10 |
9 |
=
1 |
6 |
1 |
6 |
=
1 |
3 |
(4)18×(
4 |
9 |
5 |
6 |
=18×
4 |
9 |
5 |
6 |
=8+15
=23.
1 |
6 |
1 |
6 |
=
1 |
3 |
(4)18×(
4 |
9 |
5 |
6 |
=18×
4 |
9 |
5 |
6 |
=8+15
=23.
1 |
6 |
=
1 |
3 |
(4)18×(
4 |
9 |
5 |
6 |
=18×
4 |
9 |
5 |
6 |
=8+15
=23.
1 |
3 |
(4)18×(
4 |
9 |
5 |
6 |
=18×
4 |
9 |
5 |
6 |
=8+15
=23.
4 |
9 |
5 |
6 |
=18×
4 |
9 |
5 |
6 |
=8+15
=23.
5 |
6 |
=18×
4 |
9 |
5 |
6 |
=8+15
=23.
4 |
9 |
5 |
6 |
=8+15
=23.
5 |
6 |
=8+15
=23.
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