Question

数学,,大家帮帮我

五道递等式计算(能简则简)
(1)0.04+(7.38-4.8)÷4.3 (2) 0.37*0.63+0.37*0.37+0.37 (3) 2.5*0.48*12.5
(4) (4.5*60-27)÷2.7 (5) 3.09÷[5.72-1.6*3.2÷0.4]

Answer 1

(1)0.04+(7.38-4.8)÷4.3
=0.04+2.58÷4.3
=0.04+0.6
=0.64

(2) 0.37*0.63+0.37*0.37+0.37
=0.37*（0.63+0.37+1）
=0.37*2
=0.74

(3) 2.5*0.48*12.5
=（2.5*4）*0.03*（12.5*4）
=10*0.03*50
=0.3*50
=15

(4) (4.5*60-27)÷2.7
=（270-27）÷2.7
=270÷2.7-27÷2.7
=100-10
=90

(5) 3.09÷[5.72-1.6*3.2÷0.4]
=3.09÷[5.72-5.12÷0.4]
=3.09÷[5.72-12.8】
=3.09÷（-7.08）
=-309/708

Answer 2

1.0.04+2.58/4.3=0.04+0.06=0.1 2.=0.37*(0.63+0.37+1)=0.37*(1+1)=0.37*2=0.74
3.=2.5*6*0.8*12.5=(2.5*6)*(0.8*12.5)=15*10=150 4.=(270-27)/2.7=270/2.7-27/2.7=100-10=90
5题出错了，不能解

Answer 3

能不能拆成5道题啊

追问

我晕 = = 你说呢