下面各题怎样简便就怎样算
7
2 ×
5
8 -
3
2 ÷
8
5 18×25%+
1
4 ×60+42×0.25
0.25×0.25×32
11
16 +
8
13 -(
11
16 -
5
13 )
下面各题怎样简便就怎样算72×58-32÷85 ...
答案:2 悬赏:20 手机版
解决时间 2021-03-22 11:04
- 提问者网友:骨子里的高雅
- 2021-03-22 03:07
最佳答案
- 五星知识达人网友:迟山
- 2021-03-22 03:12
(1)
7
2 ×
5
8 -
3
2 ÷
8
5 ,
=(
7
2 ?
3
2 )×
5
8 ,
=2×
5
8 ,
=1.25;
(2)18×25%+
1
4 ×60+42×0.25,
=(18+60+42)×0.25,
=120×0.25,
=30×(4×0.25),
=30×1,
=30;
(3)0.25×0.25×32,
=(0.25×4)×(0.25×4)×2,
=1×1×2,
=2;
(4)
11
16 +
8
13 -(
11
16 ?
5
13 ),
=(
11
16 ?
11
16 )+(
8
13 +
5
13 ),
=0+1,
=1.
7
2 ×
5
8 -
3
2 ÷
8
5 ,
=(
7
2 ?
3
2 )×
5
8 ,
=2×
5
8 ,
=1.25;
(2)18×25%+
1
4 ×60+42×0.25,
=(18+60+42)×0.25,
=120×0.25,
=30×(4×0.25),
=30×1,
=30;
(3)0.25×0.25×32,
=(0.25×4)×(0.25×4)×2,
=1×1×2,
=2;
(4)
11
16 +
8
13 -(
11
16 ?
5
13 ),
=(
11
16 ?
11
16 )+(
8
13 +
5
13 ),
=0+1,
=1.
全部回答
- 1楼网友:举杯邀酒敬孤独
- 2021-03-22 04:22
(1)58×72+28×58
=58×(72+28)
=58×100
=5800
(2)3000÷125÷8
=3000÷(125×8)
=3000÷1000
=3
(3)486-137-63
=486-(137+63)
=486-200
=286
(4)540÷54+10×54
=10+540
=550
(5)99×78+78
=78×(99+1)
=78×100
=7800
(6)125×24
=125×8×3
=1000×3
=3000
(7)37+125+63+175
=(37+63)+(125+175)
=100+300
=400
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