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能简算的要简算:(1)432×99-568(2)1429÷4-(3+5÷9)(3)51×68×78÷(17×34×13)(4)1417×(223-0.75)+1512÷1721.

题目详情
能简算的要简算:
(1)432×99-568
(2)14
2
9
÷4-(3+5÷9)
(3)51×68×78÷(17×34×13)
(4)1
4
17
×(2
2
3
-0.75)+15
1
2
÷
17
21
能简算的要简算:
(1)432×99-568
(2)14
2
9
÷4-(3+5÷9)
(3)51×68×78÷(17×34×13)
(4)1
4
17
×(2
2
3
-0.75)+15
1
2
÷
17
21
能简算的要简算:
(1)432×99-568
(2)14
2
9
÷4-(3+5÷9)
(3)51×68×78÷(17×34×13)
(4)1
4
17
×(2
2
3
-0.75)+15
1
2
÷
17
21
能简算的要简算:
(1)432×99-568
(2)14
2
9
÷4-(3+5÷9)
(3)51×68×78÷(17×34×13)
(4)1
4
17
×(2
2
3
-0.75)+15
1
2
÷
17
21
能简算的要简算:
(1)432×99-568
(2)14
2
9
÷4-(3+5÷9)
(3)51×68×78÷(17×34×13)
(4)1
4
17
×(2
2
3
-0.75)+15
1
2
÷
17
21


2
9
÷4-(3+5÷9)
(3)51×68×78÷(17×34×13)
(4)1
4
17
×(2
2
3
-0.75)+15
1
2
÷
17
21
2
9
2 9 2 2 9 9

4
17
×(2
2
3
-0.75)+15
1
2
÷
17
21
4
17
4 17 4 4 17 17
2
3
-0.75)+15
1
2
÷
17
21
2
3
2 3 2 2 3 3
1
2
÷
17
21
1
2
1 2 1 1 2 2
17
21
17
21
17 21 17 17 21 21
▼优质解答
答案和解析
(1)432×99-568
=432×(100-1)-568,
=432×100-432-568,
=43200-(432+568),
=43200-1000,
=42200;

(2)14
2
9
÷4-(3+5÷9)
=
128
9
×
1
4
-(3+
5
9
),
=
32
9
-
32
9

=0;

(3)51×68×78÷(17×34×13)
=51×68×78÷17÷34÷13,
=(51÷17)×(68÷34)×(78÷13),
=3×2×6,
=36;

(4)1
4
17
×(2
2
3
-0.75)+15
1
2
÷
17
21

=
21
17
× (
8
3
-
3
4
)+
31
2
×
21
17

=
21
17
×
23
12
+
31
2
×
21
17

=(
23
12
+
31
2
)×
21
17

=(
23
12
+
186
12
)×
21
17

=
209
12
×
21
17

=
1463
68
(1)432×99-568
=432×(100-1)-568,
=432×100-432-568,
=43200-(432+568),
=43200-1000,
=42200;

(2)14
2
9
÷4-(3+5÷9)
=
128
9
×
1
4
-(3+
5
9
),
=
32
9
-
32
9

=0;

(3)51×68×78÷(17×34×13)
=51×68×78÷17÷34÷13,
=(51÷17)×(68÷34)×(78÷13),
=3×2×6,
=36;

(4)1
4
17
×(2
2
3
-0.75)+15
1
2
÷
17
21

=
21
17
× (
8
3
-
3
4
)+
31
2
×
21
17

=
21
17
×
23
12
+
31
2
×
21
17

=(
23
12
+
31
2
)×
21
17

=(
23
12
+
186
12
)×
21
17

=
209
12
×
21
17

=
1463
68
(1)432×99-568
=432×(100-1)-568,
=432×100-432-568,
=43200-(432+568),
=43200-1000,
=42200;

(2)14
2
9
÷4-(3+5÷9)
=
128
9
×
1
4
-(3+
5
9
),
=
32
9
-
32
9

=0;

(3)51×68×78÷(17×34×13)
=51×68×78÷17÷34÷13,
=(51÷17)×(68÷34)×(78÷13),
=3×2×6,
=36;

(4)1
4
17
×(2
2
3
-0.75)+15
1
2
÷
17
21

=
21
17
× (
8
3
-
3
4
)+
31
2
×
21
17

=
21
17
×
23
12
+
31
2
×
21
17

=(
23
12
+
31
2
)×
21
17

=(
23
12
+
186
12
)×
21
17

=
209
12
×
21
17

=
1463
68
(1)432×99-568
=432×(100-1)-568,
=432×100-432-568,
=43200-(432+568),
=43200-1000,
=42200;

(2)14
2
9
÷4-(3+5÷9)
=
128
9
×
1
4
-(3+
5
9
),
=
32
9
-
32
9

=0;

(3)51×68×78÷(17×34×13)
=51×68×78÷17÷34÷13,
=(51÷17)×(68÷34)×(78÷13),
=3×2×6,
=36;

(4)1
4
17
×(2
2
3
-0.75)+15
1
2
÷
17
21

=
21
17
× (
8
3
-
3
4
)+
31
2
×
21
17

=
21
17
×
23
12
+
31
2
×
21
17

=(
23
12
+
31
2
)×
21
17

=(
23
12
+
186
12
)×
21
17

=
209
12
×
21
17

=
1463
68
(1)432×99-568
=432×(100-1)-568,
=432×100-432-568,
=43200-(432+568),
=43200-1000,
=42200;

(2)14
2
9
÷4-(3+5÷9)
=
128
9
×
1
4
-(3+
5
9
),
=
32
9
-
32
9

=0;

(3)51×68×78÷(17×34×13)
=51×68×78÷17÷34÷13,
=(51÷17)×(68÷34)×(78÷13),
=3×2×6,
=36;

(4)1
4
17
×(2
2
3
-0.75)+15
1
2
÷
17
21

=
21
17
× (
8
3
-
3
4
)+
31
2
×
21
17

=
21
17
×
23
12
+
31
2
×
21
17

=(
23
12
+
31
2
)×
21
17

=(
23
12
+
186
12
)×
21
17

=
209
12
×
21
17

=
1463
68
2
9
2 9 2 2 2 9 9 9 ÷4-(3+5÷9)
=
128
9
×
1
4
-(3+
5
9
),
=
32
9
-
32
9

=0;

(3)51×68×78÷(17×34×13)
=51×68×78÷17÷34÷13,
=(51÷17)×(68÷34)×(78÷13),
=3×2×6,
=36;

(4)1
4
17
×(2
2
3
-0.75)+15
1
2
÷
17
21

=
21
17
× (
8
3
-
3
4
)+
31
2
×
21
17

=
21
17
×
23
12
+
31
2
×
21
17

=(
23
12
+
31
2
)×
21
17

=(
23
12
+
186
12
)×
21
17

=
209
12
×
21
17

=
1463
68
128
9
128 9 128 128 128 9 9 9 ×
1
4
1 4 1 1 1 4 4 4 -(3+
5
9
),
=
32
9
-
32
9

=0;

(3)51×68×78÷(17×34×13)
=51×68×78÷17÷34÷13,
=(51÷17)×(68÷34)×(78÷13),
=3×2×6,
=36;

(4)1
4
17
×(2
2
3
-0.75)+15
1
2
÷
17
21

=
21
17
× (
8
3
-
3
4
)+
31
2
×
21
17

=
21
17
×
23
12
+
31
2
×
21
17

=(
23
12
+
31
2
)×
21
17

=(
23
12
+
186
12
)×
21
17

=
209
12
×
21
17

=
1463
68
5
9
5 9 5 5 5 9 9 9 ),
=
32
9
-
32
9

=0;

(3)51×68×78÷(17×34×13)
=51×68×78÷17÷34÷13,
=(51÷17)×(68÷34)×(78÷13),
=3×2×6,
=36;

(4)1
4
17
×(2
2
3
-0.75)+15
1
2
÷
17
21

=
21
17
× (
8
3
-
3
4
)+
31
2
×
21
17

=
21
17
×
23
12
+
31
2
×
21
17

=(
23
12
+
31
2
)×
21
17

=(
23
12
+
186
12
)×
21
17

=
209
12
×
21
17

=
1463
68
32
9
32 9 32 32 32 9 9 9 -
32
9

=0;

(3)51×68×78÷(17×34×13)
=51×68×78÷17÷34÷13,
=(51÷17)×(68÷34)×(78÷13),
=3×2×6,
=36;

(4)1
4
17
×(2
2
3
-0.75)+15
1
2
÷
17
21

=
21
17
× (
8
3
-
3
4
)+
31
2
×
21
17

=
21
17
×
23
12
+
31
2
×
21
17

=(
23
12
+
31
2
)×
21
17

=(
23
12
+
186
12
)×
21
17

=
209
12
×
21
17

=
1463
68
32
9
32 9 32 32 32 9 9 9 ,
=0;

(3)51×68×78÷(17×34×13)
=51×68×78÷17÷34÷13,
=(51÷17)×(68÷34)×(78÷13),
=3×2×6,
=36;

(4)1
4
17
×(2
2
3
-0.75)+15
1
2
÷
17
21

=
21
17
× (
8
3
-
3
4
)+
31
2
×
21
17

=
21
17
×
23
12
+
31
2
×
21
17

=(
23
12
+
31
2
)×
21
17

=(
23
12
+
186
12
)×
21
17

=
209
12
×
21
17

=
1463
68
4
17
4 17 4 4 4 17 17 17 ×(2
2
3
-0.75)+15
1
2
÷
17
21

=
21
17
× (
8
3
-
3
4
)+
31
2
×
21
17

=
21
17
×
23
12
+
31
2
×
21
17

=(
23
12
+
31
2
)×
21
17

=(
23
12
+
186
12
)×
21
17

=
209
12
×
21
17

=
1463
68
2
3
2 3 2 2 2 3 3 3 -0.75)+15
1
2
÷
17
21

=
21
17
× (
8
3
-
3
4
)+
31
2
×
21
17

=
21
17
×
23
12
+
31
2
×
21
17

=(
23
12
+
31
2
)×
21
17

=(
23
12
+
186
12
)×
21
17

=
209
12
×
21
17

=
1463
68
1
2
1 2 1 1 1 2 2 2 ÷
17
21

=
21
17
× (
8
3
-
3
4
)+
31
2
×
21
17

=
21
17
×
23
12
+
31
2
×
21
17

=(
23
12
+
31
2
)×
21
17

=(
23
12
+
186
12
)×
21
17

=
209
12
×
21
17

=
1463
68
17
21
17 21 17 17 17 21 21 21 .
=
21
17
× (
8
3
-
3
4
)+
31
2
×
21
17

=
21
17
×
23
12
+
31
2
×
21
17

=(
23
12
+
31
2
)×
21
17

=(
23
12
+
186
12
)×
21
17

=
209
12
×
21
17

=
1463
68
21
17
21 17 21 21 21 17 17 17 × (
8
3
-
3
4
)+
31
2
×
21
17

=
21
17
×
23
12
+
31
2
×
21
17

=(
23
12
+
31
2
)×
21
17

=(
23
12
+
186
12
)×
21
17

=
209
12
×
21
17

=
1463
68
8
3
8 3 8 8 8 3 3 3 -
3
4
)+
31
2
×
21
17

=
21
17
×
23
12
+
31
2
×
21
17

=(
23
12
+
31
2
)×
21
17

=(
23
12
+
186
12
)×
21
17

=
209
12
×
21
17

=
1463
68
3
4
3 4 3 3 3 4 4 4 )+
31
2
×
21
17

=
21
17
×
23
12
+
31
2
×
21
17

=(
23
12
+
31
2
)×
21
17

=(
23
12
+
186
12
)×
21
17

=
209
12
×
21
17

=
1463
68
31
2
31 2 31 31 31 2 2 2 ×
21
17
21 17 21 21 21 17 17 17 ,
=
21
17
×
23
12
+
31
2
×
21
17

=(
23
12
+
31
2
)×
21
17

=(
23
12
+
186
12
)×
21
17

=
209
12
×
21
17

=
1463
68
21
17
21 17 21 21 21 17 17 17 ×
23
12
+
31
2
×
21
17

=(
23
12
+
31
2
)×
21
17

=(
23
12
+
186
12
)×
21
17

=
209
12
×
21
17

=
1463
68
23
12
23 12 23 23 23 12 12 12 +
31
2
×
21
17

=(
23
12
+
31
2
)×
21
17

=(
23
12
+
186
12
)×
21
17

=
209
12
×
21
17

=
1463
68
31
2
31 2 31 31 31 2 2 2 ×
21
17
21 17 21 21 21 17 17 17 ,
=(
23
12
+
31
2
)×
21
17

=(
23
12
+
186
12
)×
21
17

=
209
12
×
21
17

=
1463
68
23
12
23 12 23 23 23 12 12 12 +
31
2
)×
21
17

=(
23
12
+
186
12
)×
21
17

=
209
12
×
21
17

=
1463
68
31
2
31 2 31 31 31 2 2 2 )×
21
17

=(
23
12
+
186
12
)×
21
17

=
209
12
×
21
17

=
1463
68
21
17
21 17 21 21 21 17 17 17 ,
=(
23
12
+
186
12
)×
21
17

=
209
12
×
21
17

=
1463
68
23
12
23 12 23 23 23 12 12 12 +
186
12
)×
21
17

=
209
12
×
21
17

=
1463
68
186
12
186 12 186 186 186 12 12 12 )×
21
17

=
209
12
×
21
17

=
1463
68
21
17
21 17 21 21 21 17 17 17 ,
=
209
12
×
21
17

=
1463
68
209
12
209 12 209 209 209 12 12 12 ×
21
17
21 17 21 21 21 17 17 17 ,
=
1463
68
1463
68
1463 68 1463 1463 1463 68 68 68 .