问题 解答题
递等式计算.(能简算的要简算,并写出主要过程)
(1)305×10-10034÷29
(2)17
6
17
-6.25-3
3
4

(3)8.53×
3
8
+11.47÷2
2
3

(4)(0.9÷
3
5
+4
1
2
)÷1
2
3
+3
1
6

(5)
5
6
×[2
1
3
-(
1
3
+0.2)]÷
3
5
答案

(1)305×10-10034÷29,

=305×10-10034÷29,

=3050-346,

=2704;

(2)17

6
17
-6.25-3
3
4

=17

6
17
-(6.25+3.75),

=17

6
17
-10,

=7

6
17

(3)8.53×

3
8
+11.47÷2
2
3

=8.53×

3
8
+11.47×
3
8

=(8.53+11.47)×

3
8

=20×

3
8

=

15
2

(4)(0.9÷

3
5
+4
1
2
)÷1
2
3
+3
1
6

=(

3
2
+4
1
2
)÷1
2
3
+3
1
6

=6×

3
5
+3
1
6

=

18
5
+3
1
6

=6

23
30

(5)

5
6
×[2
1
3
-(
1
3
+0.2)]÷
3
5

=

5
6
×[2
1
3
-
1
3
-0.2]÷
3
5

=

5
6
×[2-0.2]÷
3
5

=

5
6
×1.8÷
3
5

=1.5×

5
3

=2.5.

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