1樓:匿名使用者
(1)3.6×5÷3.6×5=25
87.04÷0.4²=544
9÷4.5=2小時 4.5÷9=0.5公頃18-21.6×18÷24.3=2
3.5×(0.32÷0.4)=2.8
(8.1+4.5)÷(7.52-1.5)=
2樓:匿名使用者
6.25÷1%-1.25×25×8
=625-(1.25×8)×25
=625-10×25
=625-250
=375
3/5×81+60%×19
=0.6×(81+19)
=0.6×100
=604/3×4÷4×4/3
=4/3×4/3×(4÷4)
=4/3×4/3
=16/9
13/7×12.5%+12.5%×13/6=(13/7+13/6)×12.5%
=1×12.5%
=0.125
5/4×3.5+5.5×80%+0.8
=0.8×(3.5+5.5+1)
=0.8×10
=8(27+19/18)÷9
=27÷9+19/18÷9
=3+19/2
=3又19/2
81/5×3.6÷1又6/1
=9/2÷7/6
=9/2×6/7
=27/7
3樓:建小之
25沒有長寬尺寸怎麼算
每公頃兩小時,每小時半公頃
脫式計算.(能用簡便方法的就用簡便方法計算)[8.5-(3.6+3.6)]÷2.6 10.1×8...
4樓:清風
(1)[8.5-(3.6+3.6)]÷
du2.6
=[8.5-7.2]÷2.6
=1.3÷2.6
=0.5;
(2)10.1×
zhi87
=(10+0.1)×87
=10×87+0.1×87
=870+8.7
=878.7;
(3)1.4×[(7.5+38.4)÷dao0.9]=1.4×[45.9÷0.9]
=1.4×51
=71.4.
脫式計算(能簡便算的要簡算
5樓:哈了個蜜
(1)(3.8-1.8÷2)×0.5
=(3.8-0.9)×0.5,
=2.9×0.5,
=1.45;
(2)9
10÷[1
2×(65-3
10)]
=910
÷[12
×910
].=9
10÷920,
=2;(3)25+3
7+35+4
7=(25+3
5)+(37+4
7),=1+1,
=2;(4)19×15+1
5×14+17×20%
=19×15+1
5×14+17×15,
=(19+14+17)×15,
=50×15,
=10.
脫式計算(能簡算的要簡算
6樓:軒胤
(1)6.72-2.3÷0.5×0.8
=6.72-4.6×0.8
=6.72-3.68
=3.04;
(2)98-1
7+18-6
7=(98+1
8)-(17+6
7)=54
-1=14;
(3)9
10÷[1
2×(65-3
10)]
=910
÷[12
×910]=9
10÷9
20=2;
(4)(27+1
5)×7×5=27
×7×5+1
5×7×5
=10+7
=17.
脫式計算(能簡算的要用簡便方法計算): ①80÷(1-84%) ②5-5× 2 5 +
7樓:臥牛
①80÷(1-84%),
=80÷0.16,
=500;
②5-5×2 5
+3 5
,=5-2+3 5
,=33 5
;③0.25×32×12.5%,
=0.25×4×8×0.125,
=(0.25×4)×(8×0.125),
=1×1,
=1;④7 9
÷11 5
+2 9
×511
,=7 9
×511
+2 9
×511
,=(7 9
+2 9
)×511
,=1×5
11,=511.
8樓:冼棟屈嘉穎
解:①80÷(1-84%),
=80÷0.16,
=500;
②5-5×
25+35,
=5-2+35,
=335;
③0.25×32×12.5%,
=0.25×4×8×0.125,
=(0.25×4)×(8×0.125),
=1×1,
=1;④79÷115+29×511,
=79×511+29×511,
=(79+29)×511,
=1×511,
=511.
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