简便计算,求你们了
分配率:4/9×14/15+4/9÷15101×334/5×99+4/5(5/8+5)×5/75.63×6.34+0.563×36.6乘法结合律:0.25×32×1.25...
分配率:4/9×14/15+4/9÷15 101×33 4/5×99+4/5 (5/8+5)×5/7
5.63×6.34+0.563×36.6
乘法结合律:0.25×32×1.25
连减:8-2/7-5/7
连除:8700÷25÷4
去括号:15.43-(2.6+5.43)
商不变性质:20÷0.25 展开
5.63×6.34+0.563×36.6
乘法结合律:0.25×32×1.25
连减:8-2/7-5/7
连除:8700÷25÷4
去括号:15.43-(2.6+5.43)
商不变性质:20÷0.25 展开
2个回答
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分配率:4/9×14/15+4/9÷15
=4/9*14/15+4/9*1/15
4/9*(14/15+1/15)
=4/9*1
=4/9
101×33
(100+1)*33
=330+33
=363
4/5×99+4/5
=4/5*(99+1)
=4/5*100
=80
(5/8+5)×5/7
=5/8*5/7+5*5/7
=25/56+25/7
=25/56+200/56
=225/56
5.63×6.34+0.563×36.6
=5.63*6.34+5.63*3.66
=5.63*(6.34+3.66)
=5.63*10
=56.3
乘法结合律:
0.25×32×1.25
=(0.25*4)*(8*1.25)
=1*10
=10
连减:8-2/7-5/7
=8-(2/7+5/7)
8-1
=7
连除:8700÷25÷4
=8700/(25*4)
=8700/100
=87
去括号:
15.43-(2.6+5.43)
=15.43-5.43-2.6
=10-2.6
=7.4
商不变性质:
20÷0.25
=2000/25
=80
=4/9*14/15+4/9*1/15
4/9*(14/15+1/15)
=4/9*1
=4/9
101×33
(100+1)*33
=330+33
=363
4/5×99+4/5
=4/5*(99+1)
=4/5*100
=80
(5/8+5)×5/7
=5/8*5/7+5*5/7
=25/56+25/7
=25/56+200/56
=225/56
5.63×6.34+0.563×36.6
=5.63*6.34+5.63*3.66
=5.63*(6.34+3.66)
=5.63*10
=56.3
乘法结合律:
0.25×32×1.25
=(0.25*4)*(8*1.25)
=1*10
=10
连减:8-2/7-5/7
=8-(2/7+5/7)
8-1
=7
连除:8700÷25÷4
=8700/(25*4)
=8700/100
=87
去括号:
15.43-(2.6+5.43)
=15.43-5.43-2.6
=10-2.6
=7.4
商不变性质:
20÷0.25
=2000/25
=80
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分配率:4/9×14/15+4/9÷15 =4/9 101×33 =3333 4/5×99+4/5=16.64 ( 5/8+5)×5/7=225/56
5.63×6.34+0.563×36.6=56.1311
乘法结合律:0.25×32×1.25 =10
连减:8-2/7-5/7=7
连除:8700÷25÷4=87
去括号:15.43-(2.6+5.43)=7.4
商不变性质:20÷0.25=80
5.63×6.34+0.563×36.6=56.1311
乘法结合律:0.25×32×1.25 =10
连减:8-2/7-5/7=7
连除:8700÷25÷4=87
去括号:15.43-(2.6+5.43)=7.4
商不变性质:20÷0.25=80
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