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计算下列各题,能简算的要简算3415×(57-314÷34);709×99+709;314×(538-5.375).

题目详情
计算下列各题,能简算的要简算
3
4
15
×(
5
7
-
3
14
÷
3
4
);            709×99+709;           3
1
4
×(5
3
8
-5.375).

4
15
×(
5
7
-
3
14
÷
3
4
);            709×99+709;           3
1
4
×(5
3
8
-5.375).
4
15
441515
5
7
-
3
14
÷
3
4
);            709×99+709;           3
1
4
×(5
3
8
-5.375).
5
7
5577
3
14
÷
3
4
);            709×99+709;           3
1
4
×(5
3
8
-5.375).
3
14
331414
3
4
);            709×99+709;           3
1
4
×(5
3
8
-5.375).
3
4
3344
1
4
×(5
3
8
-5.375).
1
4
1144
3
8
-5.375).
3
8
3388
▼优质解答
答案和解析
(1)3
4
15
×(
5
7
-
3
14
÷
3
4

=3
4
15
×(
5
7
-
2
7

=3
4
15
×
3
7

=
49
15
×
3
7

=
7
5


(2)709×99+709
=709×(99+1)
=709×100
=70900;

(3)3
1
4
×(5
3
8
-5.375)
=3
1
4
×0
=0.
4
15
444151515×(
5
7
-
3
14
÷
3
4

=3
4
15
×(
5
7
-
2
7

=3
4
15
×
3
7

=
49
15
×
3
7

=
7
5


(2)709×99+709
=709×(99+1)
=709×100
=70900;

(3)3
1
4
×(5
3
8
-5.375)
=3
1
4
×0
=0.
5
7
555777-
3
14
÷
3
4

=3
4
15
×(
5
7
-
2
7

=3
4
15
×
3
7

=
49
15
×
3
7

=
7
5


(2)709×99+709
=709×(99+1)
=709×100
=70900;

(3)3
1
4
×(5
3
8
-5.375)
=3
1
4
×0
=0.
3
14
333141414÷
3
4

=3
4
15
×(
5
7
-
2
7

=3
4
15
×
3
7

=
49
15
×
3
7

=
7
5


(2)709×99+709
=709×(99+1)
=709×100
=70900;

(3)3
1
4
×(5
3
8
-5.375)
=3
1
4
×0
=0.
3
4
333444)
=3
4
15
×(
5
7
-
2
7

=3
4
15
×
3
7

=
49
15
×
3
7

=
7
5


(2)709×99+709
=709×(99+1)
=709×100
=70900;

(3)3
1
4
×(5
3
8
-5.375)
=3
1
4
×0
=0.
4
15
444151515×(
5
7
-
2
7

=3
4
15
×
3
7

=
49
15
×
3
7

=
7
5


(2)709×99+709
=709×(99+1)
=709×100
=70900;

(3)3
1
4
×(5
3
8
-5.375)
=3
1
4
×0
=0.
5
7
555777-
2
7

=3
4
15
×
3
7

=
49
15
×
3
7

=
7
5


(2)709×99+709
=709×(99+1)
=709×100
=70900;

(3)3
1
4
×(5
3
8
-5.375)
=3
1
4
×0
=0.
2
7
222777)
=3
4
15
×
3
7

=
49
15
×
3
7

=
7
5


(2)709×99+709
=709×(99+1)
=709×100
=70900;

(3)3
1
4
×(5
3
8
-5.375)
=3
1
4
×0
=0.
4
15
444151515×
3
7

=
49
15
×
3
7

=
7
5


(2)709×99+709
=709×(99+1)
=709×100
=70900;

(3)3
1
4
×(5
3
8
-5.375)
=3
1
4
×0
=0.
3
7
333777
=
49
15
×
3
7

=
7
5


(2)709×99+709
=709×(99+1)
=709×100
=70900;

(3)3
1
4
×(5
3
8
-5.375)
=3
1
4
×0
=0.
49
15
494949151515×
3
7

=
7
5


(2)709×99+709
=709×(99+1)
=709×100
=70900;

(3)3
1
4
×(5
3
8
-5.375)
=3
1
4
×0
=0.
3
7
333777
=
7
5


(2)709×99+709
=709×(99+1)
=709×100
=70900;

(3)3
1
4
×(5
3
8
-5.375)
=3
1
4
×0
=0.
7
5
777555;

(2)709×99+709
=709×(99+1)
=709×100
=70900;

(3)3
1
4
×(5
3
8
-5.375)
=3
1
4
×0
=0.
1
4
111444×(5
3
8
-5.375)
=3
1
4
×0
=0.
3
8
333888-5.375)
=3
1
4
×0
=0.
1
4
111444×0
=0.