题目内容
用“>”、“<”、“=”号填空;
(1)< ,(2)> ,(3)=,(4)<;
(1)(4)根据正数大于负数可直接比较大小,(2)(3)先把分数化为小数的形式再比较大小.
解:(1)-0.02<1;
(2)4/5=0.8,3/4=0.75,∴4/5>3/4;
(3)-(-3/4)=3/4=0.75,-[+(-0.75)]=-(-0.75)=0.75,∴-(-3/4)=-[+(-0.75)];
(4)-22/7<3.14.
解:(1)-0.02<1;
(2)4/5=0.8,3/4=0.75,∴4/5>3/4;
(3)-(-3/4)=3/4=0.75,-[+(-0.75)]=-(-0.75)=0.75,∴-(-3/4)=-[+(-0.75)];
(4)-22/7<3.14.
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