问题 解答题
能简算的要简算:
6.17×3.4+3.4×3.83
5
6
-
3
7
)×42
2
29
+
3
23
)×29×23
5
6
÷[
1
6
÷(
3
4
-
2
3
)]
4
25
÷[(
2
5
+
1
3
)×
9
11
]
231÷231
231
232
答案

(1)6.17×3.4+3.4×3.83,

=3.4×(6.17+3.83),

=3.4×10,

=34;

(2)(

5
6
-
3
7
)×42,

=

5
6
×42-
3
7
×42,

=35-18,

=17;

(3)(

2
29
+
3
23
)×29×23,

=(

2
29
+
3
23
)×(29×23),

=[

2
29
×(29×23)]+[
3
23
×(29×23)],

=[(

2
29
×29)×23]+[(
3
23
×23)×29],

=[2×23]+[3×29],

=46+87,

=133;

(4)

5
6
÷[
1
6
÷(
3
4
-
2
3
)],

=

5
6
÷[
1
6
÷
1
12
],

=

5
6
÷
1
2

=

5
3

(5)

4
25
÷[(
2
5
+
1
3
)×
9
11
],

=

4
25
÷[
11
15
×
9
11
],

=

4
25
÷
3
5

=

4
15

(6)231÷231

231
232

=231÷(231+

231
232
),

=231÷(231×1+231×

1
232
),

=231÷[231×(1+

1
232
)],

=1÷(1+

1
232
),

=1÷

233
232

=

232
233

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