试题与答案

计算下面各题,能简算的要简算.(1)1021÷59(2)39÷2625(3)45

题型:解答题

题目:

计算下面各题,能简算的要简算.
(1)
10
21
÷
5
9

(2)39÷
26
25

(3)
4
5
÷14÷
7
10

(4)
8
9
×
3
4
÷
8
15

(5)(
7
8
+
13
16
)÷
13
16

(6)
1
2
×
4
7
+
1
2
×
4
7

答案:

(1)

10
21
÷
5
9
=
6
7

(2)39÷

26
25
=37.5,

(3)

4
5
÷14÷
7
10

=

2
35
÷
7
10

=

4
49

(4)

8
9
×
3
4
÷
8
15

=

2
3
÷
8
15

=1

1
4

(5)(

7
8
+
13
16
)÷
13
16

=

7
8
×
16
13
+
13
16
×
16
13

=1

1
13
+1,

=2

1
13

(6)

1
2
×
4
7
+
1
2
×
4
7

=(

1
2
+
1
2
)×
4
7

=1×

4
7

=

4
7

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