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能简算的要简算,并写出简算过程.(1)[5.3-(4.98-5710)-1150]÷25%(2)1999÷199919992000(3)48%÷[3-(5.55×125-2.1÷25)](4)345×1234+7777÷35186+543.2×38.

题目详情

7
10
)-1
1
50
]÷25%          
(2)1999÷1999
1999
2000

(3)48%÷[3-(5.55×1
2
5
-2.1÷
2
5
)]
(4)3
4
5
×1234+7777÷
35
186
+543.2×38.
7
10
771010
1
50
]÷25%          
(2)1999÷1999
1999
2000

(3)48%÷[3-(5.55×1
2
5
-2.1÷
2
5
)]
(4)3
4
5
×1234+7777÷
35
186
+543.2×38.
1
50
115050
1999
2000

(3)48%÷[3-(5.55×1
2
5
-2.1÷
2
5
)]
(4)3
4
5
×1234+7777÷
35
186
+543.2×38.
1999
2000
1999199920002000
2
5
-2.1÷
2
5
)]
(4)3
4
5
×1234+7777÷
35
186
+543.2×38.
2
5
2255
2
5
)]
(4)3
4
5
×1234+7777÷
35
186
+543.2×38.
2
5
2255
4
5
×1234+7777÷
35
186
+543.2×38.
4
5
4455
35
186
+543.2×38.
35
186
3535186186
▼优质解答
答案和解析
(1)[5.3-(4.98-5
7
10
)-1
1
50
]÷25%,
=[5.3-(4.98-5.7)-1.02]÷0.25,
=[5.3-4.98+5.7-1.02]÷0.25,
=[5.3+5.7-(4.98+1.02)]÷0.25,
=[11-6]÷0.25,
=5÷0.25,
=20;

(2)1999÷1999
1999
2000

=1999÷
1999×2000+1999
2000

=1999×
2000
1999×2000+1999

=1999×
2000
1999×(2000+1)

=
2000
2001


(3)48%÷[3-(5.55×1
2
5
-2.1÷
2
5
)],
=0.48÷[3-(5.55×
7
5
-2.1×2.5)],
=0.48÷[3-(7.77-5.25)],
=0.48÷[3-2.52],
=0.48÷0.48,
=1;

(4)3
4
5
×1234+7777÷
35
186
+543.2×38,
=3.8×1234+7777×
186
35
+5432×3.8,
=(1234+5432)×3.8+1111×
186
5

=6666×3.8+1111×37.2,
=1111×6×3.8+1111×37.2,
=1111×(22.8+37.2),
=1111×60,
=66660.
7
10
777101010)-1
1
50
]÷25%,
=[5.3-(4.98-5.7)-1.02]÷0.25,
=[5.3-4.98+5.7-1.02]÷0.25,
=[5.3+5.7-(4.98+1.02)]÷0.25,
=[11-6]÷0.25,
=5÷0.25,
=20;

(2)1999÷1999
1999
2000

=1999÷
1999×2000+1999
2000

=1999×
2000
1999×2000+1999

=1999×
2000
1999×(2000+1)

=
2000
2001


(3)48%÷[3-(5.55×1
2
5
-2.1÷
2
5
)],
=0.48÷[3-(5.55×
7
5
-2.1×2.5)],
=0.48÷[3-(7.77-5.25)],
=0.48÷[3-2.52],
=0.48÷0.48,
=1;

(4)3
4
5
×1234+7777÷
35
186
+543.2×38,
=3.8×1234+7777×
186
35
+5432×3.8,
=(1234+5432)×3.8+1111×
186
5

=6666×3.8+1111×37.2,
=1111×6×3.8+1111×37.2,
=1111×(22.8+37.2),
=1111×60,
=66660.
1
50
111505050]÷25%,
=[5.3-(4.98-5.7)-1.02]÷0.25,
=[5.3-4.98+5.7-1.02]÷0.25,
=[5.3+5.7-(4.98+1.02)]÷0.25,
=[11-6]÷0.25,
=5÷0.25,
=20;

(2)1999÷1999
1999
2000

=1999÷
1999×2000+1999
2000

=1999×
2000
1999×2000+1999

=1999×
2000
1999×(2000+1)

=
2000
2001


(3)48%÷[3-(5.55×1
2
5
-2.1÷
2
5
)],
=0.48÷[3-(5.55×
7
5
-2.1×2.5)],
=0.48÷[3-(7.77-5.25)],
=0.48÷[3-2.52],
=0.48÷0.48,
=1;

(4)3
4
5
×1234+7777÷
35
186
+543.2×38,
=3.8×1234+7777×
186
35
+5432×3.8,
=(1234+5432)×3.8+1111×
186
5

=6666×3.8+1111×37.2,
=1111×6×3.8+1111×37.2,
=1111×(22.8+37.2),
=1111×60,
=66660.
1999
2000
199919991999200020002000,
=1999÷
1999×2000+1999
2000

=1999×
2000
1999×2000+1999

=1999×
2000
1999×(2000+1)

=
2000
2001


(3)48%÷[3-(5.55×1
2
5
-2.1÷
2
5
)],
=0.48÷[3-(5.55×
7
5
-2.1×2.5)],
=0.48÷[3-(7.77-5.25)],
=0.48÷[3-2.52],
=0.48÷0.48,
=1;

(4)3
4
5
×1234+7777÷
35
186
+543.2×38,
=3.8×1234+7777×
186
35
+5432×3.8,
=(1234+5432)×3.8+1111×
186
5

=6666×3.8+1111×37.2,
=1111×6×3.8+1111×37.2,
=1111×(22.8+37.2),
=1111×60,
=66660.
1999×2000+1999
2000
1999×2000+19991999×2000+19991999×2000+1999200020002000,
=1999×
2000
1999×2000+1999

=1999×
2000
1999×(2000+1)

=
2000
2001


(3)48%÷[3-(5.55×1
2
5
-2.1÷
2
5
)],
=0.48÷[3-(5.55×
7
5
-2.1×2.5)],
=0.48÷[3-(7.77-5.25)],
=0.48÷[3-2.52],
=0.48÷0.48,
=1;

(4)3
4
5
×1234+7777÷
35
186
+543.2×38,
=3.8×1234+7777×
186
35
+5432×3.8,
=(1234+5432)×3.8+1111×
186
5

=6666×3.8+1111×37.2,
=1111×6×3.8+1111×37.2,
=1111×(22.8+37.2),
=1111×60,
=66660.
2000
1999×2000+1999
2000200020001999×2000+19991999×2000+19991999×2000+1999,
=1999×
2000
1999×(2000+1)

=
2000
2001


(3)48%÷[3-(5.55×1
2
5
-2.1÷
2
5
)],
=0.48÷[3-(5.55×
7
5
-2.1×2.5)],
=0.48÷[3-(7.77-5.25)],
=0.48÷[3-2.52],
=0.48÷0.48,
=1;

(4)3
4
5
×1234+7777÷
35
186
+543.2×38,
=3.8×1234+7777×
186
35
+5432×3.8,
=(1234+5432)×3.8+1111×
186
5

=6666×3.8+1111×37.2,
=1111×6×3.8+1111×37.2,
=1111×(22.8+37.2),
=1111×60,
=66660.
2000
1999×(2000+1)
2000200020001999×(2000+1)1999×(2000+1)1999×(2000+1),
=
2000
2001


(3)48%÷[3-(5.55×1
2
5
-2.1÷
2
5
)],
=0.48÷[3-(5.55×
7
5
-2.1×2.5)],
=0.48÷[3-(7.77-5.25)],
=0.48÷[3-2.52],
=0.48÷0.48,
=1;

(4)3
4
5
×1234+7777÷
35
186
+543.2×38,
=3.8×1234+7777×
186
35
+5432×3.8,
=(1234+5432)×3.8+1111×
186
5

=6666×3.8+1111×37.2,
=1111×6×3.8+1111×37.2,
=1111×(22.8+37.2),
=1111×60,
=66660.
2000
2001
200020002000200120012001;

(3)48%÷[3-(5.55×1
2
5
-2.1÷
2
5
)],
=0.48÷[3-(5.55×
7
5
-2.1×2.5)],
=0.48÷[3-(7.77-5.25)],
=0.48÷[3-2.52],
=0.48÷0.48,
=1;

(4)3
4
5
×1234+7777÷
35
186
+543.2×38,
=3.8×1234+7777×
186
35
+5432×3.8,
=(1234+5432)×3.8+1111×
186
5

=6666×3.8+1111×37.2,
=1111×6×3.8+1111×37.2,
=1111×(22.8+37.2),
=1111×60,
=66660.
2
5
222555-2.1÷
2
5
)],
=0.48÷[3-(5.55×
7
5
-2.1×2.5)],
=0.48÷[3-(7.77-5.25)],
=0.48÷[3-2.52],
=0.48÷0.48,
=1;

(4)3
4
5
×1234+7777÷
35
186
+543.2×38,
=3.8×1234+7777×
186
35
+5432×3.8,
=(1234+5432)×3.8+1111×
186
5

=6666×3.8+1111×37.2,
=1111×6×3.8+1111×37.2,
=1111×(22.8+37.2),
=1111×60,
=66660.
2
5
222555)],
=0.48÷[3-(5.55×
7
5
-2.1×2.5)],
=0.48÷[3-(7.77-5.25)],
=0.48÷[3-2.52],
=0.48÷0.48,
=1;

(4)3
4
5
×1234+7777÷
35
186
+543.2×38,
=3.8×1234+7777×
186
35
+5432×3.8,
=(1234+5432)×3.8+1111×
186
5

=6666×3.8+1111×37.2,
=1111×6×3.8+1111×37.2,
=1111×(22.8+37.2),
=1111×60,
=66660.
7
5
777555-2.1×2.5)],
=0.48÷[3-(7.77-5.25)],
=0.48÷[3-2.52],
=0.48÷0.48,
=1;

(4)3
4
5
×1234+7777÷
35
186
+543.2×38,
=3.8×1234+7777×
186
35
+5432×3.8,
=(1234+5432)×3.8+1111×
186
5

=6666×3.8+1111×37.2,
=1111×6×3.8+1111×37.2,
=1111×(22.8+37.2),
=1111×60,
=66660.
4
5
444555×1234+7777÷
35
186
+543.2×38,
=3.8×1234+7777×
186
35
+5432×3.8,
=(1234+5432)×3.8+1111×
186
5

=6666×3.8+1111×37.2,
=1111×6×3.8+1111×37.2,
=1111×(22.8+37.2),
=1111×60,
=66660.
35
186
353535186186186+543.2×38,
=3.8×1234+7777×
186
35
+5432×3.8,
=(1234+5432)×3.8+1111×
186
5

=6666×3.8+1111×37.2,
=1111×6×3.8+1111×37.2,
=1111×(22.8+37.2),
=1111×60,
=66660.
186
35
186186186353535+5432×3.8,
=(1234+5432)×3.8+1111×
186
5

=6666×3.8+1111×37.2,
=1111×6×3.8+1111×37.2,
=1111×(22.8+37.2),
=1111×60,
=66660.
186
5
186186186555,
=6666×3.8+1111×37.2,
=1111×6×3.8+1111×37.2,
=1111×(22.8+37.2),
=1111×60,
=66660.