678×0.99________6.78÷0.99
5.62÷1.01________5.62×1.01
5.1313…________
________
.><=>分析:①因为678×0.99=671.22,6.78÷0.99≈6.84,因为671.22>6.84,所以678×0.99>6.78÷0.99;
②因为5.62÷1.01<5.62,5.62×1.01>5.62,所以5.62÷1.01<5.62×1.01;
③51313…=
;④
>
;据此解答.解答:678×0.99>6.78÷0.99
5.62÷1.01<5.62×1.01
5.1313…=
>
.故答案为:>,<,=,>.
点评:此题考查了小数大小比较的方法,应注意灵活运用.