1樓:萌曉
9.6÷0.4×0.25,
=24×0.25,
=0.25×4×6,
=6;8.68-8.68÷0.56×0.5,=8.68-8.68×(0.5÷0.56),=8.68×(1-0.5÷0.56),
=8.68×0.06÷0.56,
=8.68×3
28,=0.93;
29.7÷(5.85÷0.65),
=29.7÷9,
=3.3;
1.25×3.2×0.8,
=(1.25×0.8)×3.2,
=1×3.2,
=3.2;
14.5×102,
=14.5×(100+2),
=14.5×100+14.5×2,
=1450+29,
=1479;
4.7×4.7+4.7+4.7×4.3,
=(4.7+1+4.3)×4.7,
=10×4.7,
=47.
遞等式計算.(能簡算的要簡算)9.6÷0.4×0.25 29.7÷(5.85÷0.65) 7.4×9.9 3.84-2.7×0.64 8.68-8.6
2樓:皽圧殷
(1)9.6÷0.4×0.25,
=24×0.25,
=6;(2)29.7÷(5.85÷0.65),
=29.7÷9,
=3.3;
(3)7.4×9.9,
=7.4×(10-0.1),
=7.4×10-7.4×0.1,
=74-0.74,
=73.26;
(4)3.84-2.7×0.64,
=3.84-1.728,
=2.112;
(5)8.68-8.68÷0.56×0.5,=8.68-15.5×0.5,
=8.68-7.75,
=0.93;
(6)4.7×4.7+4.7+4.3×4.7,=4.7×(4.7+4.3+1),
=4.7×10,
=47.
8.68-8.68÷0.56×0.5怎樣簡算?
3樓:義明智
8.68-8.68÷0.56×0.5
=8.68-8.68x0.5÷0.56
=8.68-4.34÷0.56
=8.68-7.75
=8.68-8+0.25
=0.68+0.25
=0.93
用遞等式計算,寫出必要的計算過程,能簡便運算的要用簡便方法計算.100-870÷29-8815÷7.5+4.6-6.63.5×
4樓:桃兒
①100-870÷
29-88
=100-30-88
=-18
②15÷7.5+4.6-6.6
=2+4.6-6.6
=6.6-6.6
=0③3.5×
64×12.5
=(3.5×8)×內(8×12.5)
=28×100
=2800
④容51×7.5-49×7.5-1
=(51-49)×7.5-1
=2×7.5-1
=15-1
=14⑤4×(4.8+3.2÷4-5.6)=4×(4.8+0.8-5.6)
=4×0
=0⑥[8+(5-2)÷1.2]×5
=[8+3÷1.2]×5
=10.5×5
=52.5
遞等式計算(能簡便的要簡便) (8分之5+6分之5)*25分之4
5樓:巨集哥
(5/8+5/6)×
4/25
=5/8×4/25+5/6×4/25
=1/10+2/15
=7/30
3/5x=25/72
解專:x=25/72÷屬3/5
x=125/216
x÷6/35=26/35÷13/25
解: x=10/7×6/35
x=12/49
4x+16-2x=26
解: 2x=26-16
x=10÷2x=5
6樓:匿名使用者
遞等式計算(能簡便的要簡便)
(8分之
5+6分之5)*25分之4
[(5/8)+(5/6)]*(4/25)
解,得:專
==(5/8)(4/25)+(5/6)(4/25)==(1/10)+(2/15)
==7/30
解方程:
5分之屬3x=72分之25
3x/5==25/72
解,得:
72*3x==5*25
x=5*25/(72*3)
x==125/216
x÷35分之6=35分之26÷25分之13x/(6/35)==(26/35)/(13/25)解,得:
35x/6==10/7
x==(10/7)*(6/35)
x==12/49
4x+2(8-x)=26
解,得:
4x+16-2x-26==0
2x==10
x==5
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