问题 解答题
用自己喜欢的方法计算.
1
13
×7×
13
14

7
12
×
3
4
-
5
12
×
3
4

8
14
÷4×
3
7

296÷
295
3
答案

(1)

1
13
×7×
13
14

=

1
13
×
13
14
×7

=

1
14
×7

=

1
2

(2)

7
12
×
3
4
-
5
12
×
3
4

=(

7
12
-
5
12
)×
3
4

=

1
6
×
3
4

=

1
8

(3)

8
14
÷4×
3
7

=

1
7
×
3
7

=

3
49

(4)296÷

295
3

=295×

3
295
+1×
3
295

=3+

3
295

=3

3
295

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