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脱式计算.(能简算的要简算)(1)275+450÷18×24(2)1.46+29+371+8.54(3)14÷(3-519-1419)(4)19.9+19.9×99(5)310+(67-12)×725(6)888×9+28×111.
题目详情
脱式计算.(能简算的要简算) (1)275+450÷18×24 | (2)1.46+29+371+8.54 | (3)
| ||||||||
(4)19.9+19.9×99 | (5)
| (6)888×9+28×111. |
脱式计算.(能简算的要简算) (1)275+450÷18×24 | (2)1.46+29+371+8.54 | (3)
| ||||||||
(4)19.9+19.9×99 | (5)
| (6)888×9+28×111. |
(1)275+450÷18×24
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14 |
19 |
(1)275+450÷18×24
1 |
4 |
5 |
19 |
14 |
19 |
1 |
4 |
5 |
19 |
14 |
19 |
1 |
4 |
5 |
19 |
14 |
19 |
5 |
19 |
14 |
19 |
14 |
19 |
3 |
10 |
6 |
7 |
1 |
2 |
7 |
25 |
3 |
10 |
6 |
7 |
1 |
2 |
7 |
25 |
3 |
10 |
6 |
7 |
1 |
2 |
7 |
25 |
3 |
10 |
6 |
7 |
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1 |
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25 |
▼优质解答
答案和解析
(1)275+450÷18×24,
=275+25×24,
=275+(25×4)×6,
=275+600,
=875;
(2)1.46+29+371+8.54,
=(1.46+8.54)+(29+371),
=10+400,
=410;
(3)
÷(3-
-
),
=
÷[3-(
+
)],
=
÷[3-1],
=
÷2,
=
;
(4)19.9+19.9×99,
=19.9×(99+1),
=19.9×100,
=1990;
(5)
+(
−
)×
,
=
+
×
−
×
,
=
+
−
,
=
+(
−
),
=
+
,
=
;
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
1 1 14 4 4÷(3-
-
),
=
÷[3-(
+
)],
=
÷[3-1],
=
÷2,
=
;
(4)19.9+19.9×99,
=19.9×(99+1),
=19.9×100,
=1990;
(5)
+(
−
)×
,
=
+
×
−
×
,
=
+
−
,
=
+(
−
),
=
+
,
=
;
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
5 5 519 19 19-
),
=
÷[3-(
+
)],
=
÷[3-1],
=
÷2,
=
;
(4)19.9+19.9×99,
=19.9×(99+1),
=19.9×100,
=1990;
(5)
+(
−
)×
,
=
+
×
−
×
,
=
+
−
,
=
+(
−
),
=
+
,
=
;
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
14 14 1419 19 19),
=
÷[3-(
+
)],
=
÷[3-1],
=
÷2,
=
;
(4)19.9+19.9×99,
=19.9×(99+1),
=19.9×100,
=1990;
(5)
+(
−
)×
,
=
+
×
−
×
,
=
+
−
,
=
+(
−
),
=
+
,
=
;
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
1 1 14 4 4÷[3-(
+
)],
=
÷[3-1],
=
÷2,
=
;
(4)19.9+19.9×99,
=19.9×(99+1),
=19.9×100,
=1990;
(5)
+(
−
)×
,
=
+
×
−
×
,
=
+
−
,
=
+(
−
),
=
+
,
=
;
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
5 5 519 19 19+
14 14 1419 19 19)],
=
÷[3-1],
=
÷2,
=
;
(4)19.9+19.9×99,
=19.9×(99+1),
=19.9×100,
=1990;
(5)
+(
−
)×
,
=
+
×
−
×
,
=
+
−
,
=
+(
−
),
=
+
,
=
;
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
1 1 14 4 4÷[3-1],
=
÷2,
=
;
(4)19.9+19.9×99,
=19.9×(99+1),
=19.9×100,
=1990;
(5)
+(
−
)×
,
=
+
×
−
×
,
=
+
−
,
=
+(
−
),
=
+
,
=
;
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
1 1 14 4 4÷2,
=
;
(4)19.9+19.9×99,
=19.9×(99+1),
=19.9×100,
=1990;
(5)
+(
−
)×
,
=
+
×
−
×
,
=
+
−
,
=
+(
−
),
=
+
,
=
;
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
1 1 18 8 8;
(4)19.9+19.9×99,
=19.9×(99+1),
=19.9×100,
=1990;
(5)
+(
−
)×
,
=
+
×
−
×
,
=
+
−
,
=
+(
−
),
=
+
,
=
;
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
3 3 310 10 10+(
−
)×
,
=
+
×
−
×
,
=
+
−
,
=
+(
−
),
=
+
,
=
;
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
6 6 67 7 7−
1 1 12 2 2)×
,
=
+
×
−
×
,
=
+
−
,
=
+(
−
),
=
+
,
=
;
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
7 7 725 25 25,
=
+
×
−
×
,
=
+
−
,
=
+(
−
),
=
+
,
=
;
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
3 3 310 10 10+
×
−
×
,
=
+
−
,
=
+(
−
),
=
+
,
=
;
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
6 6 67 7 7×
7 7 725 25 25−
×
,
=
+
−
,
=
+(
−
),
=
+
,
=
;
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100. −
1 1 12 2 2×
7 7 725 25 25,
=
+
−
,
=
+(
−
),
=
+
,
=
;
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
3 3 310 10 10+
−
,
=
+(
−
),
=
+
,
=
;
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
6 6 625 25 25−
,
=
+(
−
),
=
+
,
=
;
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100. −
7 7 750 50 50,
=
+(
−
),
=
+
,
=
;
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
3 3 310 10 10+(
−
),
=
+
,
=
;
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
12 12 1250 50 50−
7 7 750 50 50),
=
+
,
=
;
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
3 3 310 10 10+
,
=
;
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
1 1 110 10 10,
=
;
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
2 2 25 5 5;
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
=275+25×24,
=275+(25×4)×6,
=275+600,
=875;
(2)1.46+29+371+8.54,
=(1.46+8.54)+(29+371),
=10+400,
=410;
(3)
1 |
4 |
5 |
19 |
14 |
19 |
=
1 |
4 |
5 |
19 |
14 |
19 |
=
1 |
4 |
=
1 |
4 |
=
1 |
8 |
(4)19.9+19.9×99,
=19.9×(99+1),
=19.9×100,
=1990;
(5)
3 |
10 |
6 |
7 |
1 |
2 |
7 |
25 |
=
3 |
10 |
6 |
7 |
7 |
25 |
1 |
2 |
7 |
25 |
=
3 |
10 |
6 |
25 |
7 |
50 |
=
3 |
10 |
12 |
50 |
7 |
50 |
=
3 |
10 |
1 |
10 |
=
2 |
5 |
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
1 |
4 |
5 |
19 |
14 |
19 |
=
1 |
4 |
5 |
19 |
14 |
19 |
=
1 |
4 |
=
1 |
4 |
=
1 |
8 |
(4)19.9+19.9×99,
=19.9×(99+1),
=19.9×100,
=1990;
(5)
3 |
10 |
6 |
7 |
1 |
2 |
7 |
25 |
=
3 |
10 |
6 |
7 |
7 |
25 |
1 |
2 |
7 |
25 |
=
3 |
10 |
6 |
25 |
7 |
50 |
=
3 |
10 |
12 |
50 |
7 |
50 |
=
3 |
10 |
1 |
10 |
=
2 |
5 |
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
5 |
19 |
14 |
19 |
=
1 |
4 |
5 |
19 |
14 |
19 |
=
1 |
4 |
=
1 |
4 |
=
1 |
8 |
(4)19.9+19.9×99,
=19.9×(99+1),
=19.9×100,
=1990;
(5)
3 |
10 |
6 |
7 |
1 |
2 |
7 |
25 |
=
3 |
10 |
6 |
7 |
7 |
25 |
1 |
2 |
7 |
25 |
=
3 |
10 |
6 |
25 |
7 |
50 |
=
3 |
10 |
12 |
50 |
7 |
50 |
=
3 |
10 |
1 |
10 |
=
2 |
5 |
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
14 |
19 |
=
1 |
4 |
5 |
19 |
14 |
19 |
=
1 |
4 |
=
1 |
4 |
=
1 |
8 |
(4)19.9+19.9×99,
=19.9×(99+1),
=19.9×100,
=1990;
(5)
3 |
10 |
6 |
7 |
1 |
2 |
7 |
25 |
=
3 |
10 |
6 |
7 |
7 |
25 |
1 |
2 |
7 |
25 |
=
3 |
10 |
6 |
25 |
7 |
50 |
=
3 |
10 |
12 |
50 |
7 |
50 |
=
3 |
10 |
1 |
10 |
=
2 |
5 |
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
1 |
4 |
5 |
19 |
14 |
19 |
=
1 |
4 |
=
1 |
4 |
=
1 |
8 |
(4)19.9+19.9×99,
=19.9×(99+1),
=19.9×100,
=1990;
(5)
3 |
10 |
6 |
7 |
1 |
2 |
7 |
25 |
=
3 |
10 |
6 |
7 |
7 |
25 |
1 |
2 |
7 |
25 |
=
3 |
10 |
6 |
25 |
7 |
50 |
=
3 |
10 |
12 |
50 |
7 |
50 |
=
3 |
10 |
1 |
10 |
=
2 |
5 |
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
5 |
19 |
14 |
19 |
=
1 |
4 |
=
1 |
4 |
=
1 |
8 |
(4)19.9+19.9×99,
=19.9×(99+1),
=19.9×100,
=1990;
(5)
3 |
10 |
6 |
7 |
1 |
2 |
7 |
25 |
=
3 |
10 |
6 |
7 |
7 |
25 |
1 |
2 |
7 |
25 |
=
3 |
10 |
6 |
25 |
7 |
50 |
=
3 |
10 |
12 |
50 |
7 |
50 |
=
3 |
10 |
1 |
10 |
=
2 |
5 |
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
1 |
4 |
=
1 |
4 |
=
1 |
8 |
(4)19.9+19.9×99,
=19.9×(99+1),
=19.9×100,
=1990;
(5)
3 |
10 |
6 |
7 |
1 |
2 |
7 |
25 |
=
3 |
10 |
6 |
7 |
7 |
25 |
1 |
2 |
7 |
25 |
=
3 |
10 |
6 |
25 |
7 |
50 |
=
3 |
10 |
12 |
50 |
7 |
50 |
=
3 |
10 |
1 |
10 |
=
2 |
5 |
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
1 |
4 |
=
1 |
8 |
(4)19.9+19.9×99,
=19.9×(99+1),
=19.9×100,
=1990;
(5)
3 |
10 |
6 |
7 |
1 |
2 |
7 |
25 |
=
3 |
10 |
6 |
7 |
7 |
25 |
1 |
2 |
7 |
25 |
=
3 |
10 |
6 |
25 |
7 |
50 |
=
3 |
10 |
12 |
50 |
7 |
50 |
=
3 |
10 |
1 |
10 |
=
2 |
5 |
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
1 |
8 |
(4)19.9+19.9×99,
=19.9×(99+1),
=19.9×100,
=1990;
(5)
3 |
10 |
6 |
7 |
1 |
2 |
7 |
25 |
=
3 |
10 |
6 |
7 |
7 |
25 |
1 |
2 |
7 |
25 |
=
3 |
10 |
6 |
25 |
7 |
50 |
=
3 |
10 |
12 |
50 |
7 |
50 |
=
3 |
10 |
1 |
10 |
=
2 |
5 |
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
3 |
10 |
6 |
7 |
1 |
2 |
7 |
25 |
=
3 |
10 |
6 |
7 |
7 |
25 |
1 |
2 |
7 |
25 |
=
3 |
10 |
6 |
25 |
7 |
50 |
=
3 |
10 |
12 |
50 |
7 |
50 |
=
3 |
10 |
1 |
10 |
=
2 |
5 |
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
6 |
7 |
1 |
2 |
7 |
25 |
=
3 |
10 |
6 |
7 |
7 |
25 |
1 |
2 |
7 |
25 |
=
3 |
10 |
6 |
25 |
7 |
50 |
=
3 |
10 |
12 |
50 |
7 |
50 |
=
3 |
10 |
1 |
10 |
=
2 |
5 |
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
7 |
25 |
=
3 |
10 |
6 |
7 |
7 |
25 |
1 |
2 |
7 |
25 |
=
3 |
10 |
6 |
25 |
7 |
50 |
=
3 |
10 |
12 |
50 |
7 |
50 |
=
3 |
10 |
1 |
10 |
=
2 |
5 |
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
3 |
10 |
6 |
7 |
7 |
25 |
1 |
2 |
7 |
25 |
=
3 |
10 |
6 |
25 |
7 |
50 |
=
3 |
10 |
12 |
50 |
7 |
50 |
=
3 |
10 |
1 |
10 |
=
2 |
5 |
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
6 |
7 |
7 |
25 |
1 |
2 |
7 |
25 |
=
3 |
10 |
6 |
25 |
7 |
50 |
=
3 |
10 |
12 |
50 |
7 |
50 |
=
3 |
10 |
1 |
10 |
=
2 |
5 |
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100. −
1 |
2 |
7 |
25 |
=
3 |
10 |
6 |
25 |
7 |
50 |
=
3 |
10 |
12 |
50 |
7 |
50 |
=
3 |
10 |
1 |
10 |
=
2 |
5 |
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
3 |
10 |
6 |
25 |
7 |
50 |
=
3 |
10 |
12 |
50 |
7 |
50 |
=
3 |
10 |
1 |
10 |
=
2 |
5 |
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
6 |
25 |
7 |
50 |
=
3 |
10 |
12 |
50 |
7 |
50 |
=
3 |
10 |
1 |
10 |
=
2 |
5 |
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100. −
7 |
50 |
=
3 |
10 |
12 |
50 |
7 |
50 |
=
3 |
10 |
1 |
10 |
=
2 |
5 |
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
3 |
10 |
12 |
50 |
7 |
50 |
=
3 |
10 |
1 |
10 |
=
2 |
5 |
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
12 |
50 |
7 |
50 |
=
3 |
10 |
1 |
10 |
=
2 |
5 |
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
3 |
10 |
1 |
10 |
=
2 |
5 |
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
1 |
10 |
=
2 |
5 |
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
2 |
5 |
(6)888×9+28×111,
=111×8×9+28×111,
=111×72+28×111,
=111×(72+28),
=111×100,
=11100.
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