(1)8470-104×65(2)168.1÷(4.3×2-0.4)(3)3.64÷4+4.36×0.25(4)[4/4-(3/4-1/5)]÷4(5)7.5×46.7+52.3×7.5+7.5(6)(3/8+5/6-7/12)×24(7)9.43-2.6+8.57-3.4
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/25 22:18:27
(1)8470-104×65(2)168.1÷(4.3×2-0.4)(3)3.64÷4+4.36×0.25(4)[4/4-(3/4-1/5)]÷4(5)7.5×46.7+52.3×7.5+7.5(6)(3/8+5/6-7/12)×24(7)9.43-2.6+8.57-3.4
(1)8470-104×65
(2)168.1÷(4.3×2-0.4)
(3)3.64÷4+4.36×0.25
(4)[4/4-(3/4-1/5)]÷4
(5)7.5×46.7+52.3×7.5+7.5
(6)(3/8+5/6-7/12)×24
(7)9.43-2.6+8.57-3.4
(1)8470-104×65(2)168.1÷(4.3×2-0.4)(3)3.64÷4+4.36×0.25(4)[4/4-(3/4-1/5)]÷4(5)7.5×46.7+52.3×7.5+7.5(6)(3/8+5/6-7/12)×24(7)9.43-2.6+8.57-3.4
解法如下:
(1) =8470-(100+4)*65=8470-100*65-4*65=8470-6500-260=1710
(2) =1681÷(43*2-4)=(41*41)/(41*2)=41/2=20.5
(3) =3.64÷4+4.36÷4=(3.64+4.36)÷4=8÷4=2
(4) =(4/4-3/4+1/5)÷4=(1/4+1/5)÷4=9/20÷4=9/80
(5) =7.5×(46.7+52.3+1)=7.5×100=750
(6) =3/8*24+5/6*24-7/12*24=9+20-14=15
(7) =9.43+8.57-(2.6+3.4)=18-6=12
需要验证是否正确,只要将式子复制到百度火鹤谷歌就能直接看到答案.