1樓:葉聲紐
(4/25)×99+(4/25)
=(4/25)×(99+1)
=(4×25)×100
=4×4
=16.
2樓:回憶七彩的童年
(99+1)x4/25
3樓:匿名使用者
4/25*100即100個4/25
4樓:
(1)25×
32×0.25
=25×4×2×4×0.25
=(25×4)版×(4×0.25)×2
=100×1×2
=200;
(2)0.25×(0.4+40)
=0.25×0.4+40×0.25
=0.1+10
=10.1;
(3)0.67+1.28+9.33+0.72=(0.67+9.33)+(1.28+0.72)=10+2
=12;
(4)3.18-(0.33+1.18)
=3.18-0.33-1.18
=(3.18-1.18)-0.33
=2-0.33
=1.67;
(5)6.3÷35
=6.3÷(7×5)
=(6.3÷7)÷權5
=0.9÷5
=0.18;
(6)[1-(0.5-0.25)]×0.6=[1-0.25]×0.6
=0.75×0.6
=0.45;
(7)7.8×0.9+0.78
=0.78×9+0.78
=0.78×(9+1)
=0.78×10
=7.8;
(8)1.9-1.9×(1.9-1.9)
=1.9-1.9×0
=1.9-0
=1.9.
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
遞等式計算,能簡便計算的一定要簡便計算.25×40.1 12.5×3.2 100.98÷9 (0.25+0.25+0.25)×4
7樓:手機使用者
(1)25×40.1
=25×(zhi40+0.1),
dao=25×40+25×0.1,
=100+2.5,
=102.5;專
(2)12.5×3.2
=12.5×0.8×4,
=10×4,
=40;
(3)100.98÷9
=(99+1.98)÷9.屬
=99÷9+1.98÷9,
=11+0.22,
=11.22;
(4)(0.25+0.25+0.25)×4=3×(0.25×4),
=3×1,
=3;(5)5.64÷2.5÷0.4
=5.64÷(2.5×0.4),
=5.64÷1,
=5.64.
遞等式計算,能簡便的要簡便
8樓:★魯魯修
(1)25×32×0.25
=25×4×2×4×0.25
=(25×4)×(4×0.25)×2
=100×1×2
=200;
(2)0.25×(0.4+40)
=0.25×0.4+40×0.25
=0.1+10
=10.1;
(3)0.67+1.28+9.33+0.72=(0.67+9.33)+(1.28+0.72)=10+2
=12;
(4)3.18-(0.33+1.18)
=3.18-0.33-1.18
=(3.18-1.18)-0.33
=2-0.33
=1.67;
(5)6.3÷35
=6.3÷(7×5)
=(6.3÷7)÷5
=0.9÷5
=0.18;
(6)[1-(0.5-0.25)]×0.6=[1-0.25]×0.6
=0.75×0.6
=0.45;
(7)7.8×0.9+0.78
=0.78×9+0.78
=0.78×(9+1)
=0.78×10
=7.8;
(8)1.9-1.9×(1.9-1.9)
=1.9-1.9×0
=1.9-0
=1.9.
遞等式計算,能簡便計算的一定要簡便計算.25×40.1 12.5×3.2 100.d8÷d (0.25+0.25+0.2
9樓:鄭雨328丶
(1)25×45.1
=25×(45+5.1),
=25×45+25×5.1,
=155+2.5,
=152.5;
(2)12.5×手.2
=12.5×5.8×4,
=15×4,
=45;
(手)155.t8÷t
=(tt+1.t8)÷t.
=tt÷t+1.t8÷t,
=11+5.22,
=11.22;
(4)(5.25+5.25+5.25)×4=手×(5.25×4),
=手×1,
=手;(5)5.84÷2.5÷5.4
=5.84÷(2.5×5.4),
=5.84÷1,
=5.84.
遞等式計算,能簡便的要簡便計算:25x(40+8)x125
10樓:寶寶
解:原式=25x40x125+25x8x125=1000x125+25x1000
=125000+25000
=150000
分析:主要考察結合律的運用。
11樓:t夏涼
25x(40十8)x125
=25x40x125十25x(8x125)=1000x125十25x1000
=1000x(125十25)
=1000x150
=150000
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