【急】几道有理数混合运算1-0.2×【-3-4×(18/5-5.3)】(1/20-3/4)×【5/7+(-5/14)】-22/7×(22/7-4/3)×7/22÷(-22/21){4-【12+4×(3-10)】}÷5以上这四道题,脱式计算,能简便的简便
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/26 04:58:06
![【急】几道有理数混合运算1-0.2×【-3-4×(18/5-5.3)】(1/20-3/4)×【5/7+(-5/14)】-22/7×(22/7-4/3)×7/22÷(-22/21){4-【12+4×(3-10)】}÷5以上这四道题,脱式计算,能简便的简便](/uploads/image/z/1990094-14-4.jpg?t=%E3%80%90%E6%80%A5%E3%80%91%E5%87%A0%E9%81%93%E6%9C%89%E7%90%86%E6%95%B0%E6%B7%B7%E5%90%88%E8%BF%90%E7%AE%971-0.2%C3%97%E3%80%90-3-4%C3%97%EF%BC%8818%2F5-5.3%EF%BC%89%E3%80%91%EF%BC%881%2F20-3%2F4%EF%BC%89%C3%97%E3%80%905%2F7%2B%EF%BC%88-5%2F14%EF%BC%89%E3%80%91-22%2F7%C3%97%EF%BC%8822%2F7-4%2F3%EF%BC%89%C3%977%2F22%C3%B7%EF%BC%88-22%2F21%EF%BC%89%7B4-%E3%80%9012%2B4%C3%97%EF%BC%883-10%EF%BC%89%E3%80%91%7D%C3%B75%E4%BB%A5%E4%B8%8A%E8%BF%99%E5%9B%9B%E9%81%93%E9%A2%98%2C%E8%84%B1%E5%BC%8F%E8%AE%A1%E7%AE%97%2C%E8%83%BD%E7%AE%80%E4%BE%BF%E7%9A%84%E7%AE%80%E4%BE%BF)
xN@_NRIˋ ҐH\h1xI]DEza+xf+%nLo?n(G"=yX^fw<:ή8N^1cdV rңuk夏R N
B\B6cSrpcI,(3ځ Pf8PG:IFbz8Zt_y1~Q{>7(2U6
V+v7ZN
Tibɷk2&@mK7fJ[:W6lZ5P"J _(ǰWjX}:Li@p-bMlCT5 2`uRaњ*Oۻ
_|Cד
【急】几道有理数混合运算1-0.2×【-3-4×(18/5-5.3)】(1/20-3/4)×【5/7+(-5/14)】-22/7×(22/7-4/3)×7/22÷(-22/21){4-【12+4×(3-10)】}÷5以上这四道题,脱式计算,能简便的简便
【急】几道有理数混合运算
1-0.2×【-3-4×(18/5-5.3)】
(1/20-3/4)×【5/7+(-5/14)】
-22/7×(22/7-4/3)×7/22÷(-22/21)
{4-【12+4×(3-10)】}÷5
以上这四道题,脱式计算,能简便的简便
【急】几道有理数混合运算1-0.2×【-3-4×(18/5-5.3)】(1/20-3/4)×【5/7+(-5/14)】-22/7×(22/7-4/3)×7/22÷(-22/21){4-【12+4×(3-10)】}÷5以上这四道题,脱式计算,能简便的简便
(1)原式=1-0.2*[-3-(3.6-5.3)]=1-0.2*[-3-(-1.7)]=1-0.2*(-1.3)=2.6
(2)原式=(1/20-15/20)*(10/14-5/14)=(-14/20)*(5/14)=-1/4
(3)原式=-(22/7-4/3)*(-21/22)=(22/7)*(21/22)-(4/3)*(21/22)=3-14/11=19/11
(4)原式={4-[12+4*(-7)]}*(1/5)=[4-(12-28)]*(1/5)=(4+16)*(1/5)=4