(1)59.9÷3.1,
≈60÷3,
=20;
(2)2.92×8.1,
≈3×8,
=24;
(3)11.9÷6.1,
≈12÷6,
=2;
(4)0.3÷0.39,
≈0.3÷0.4,
=
3
4 ;
(5)4.83÷0.21,
≈5÷0.2,
=25;
(6)4.8×0.49,
≈5×0.5,
=0.25.
(1)59.9÷3.1,
≈60÷3,
=20;
(2)2.92×8.1,
≈3×8,
=24;
(3)11.9÷6.1,
≈12÷6,
=2;
(4)0.3÷0.39,
≈0.3÷0.4,
=
3
4 ;
(5)4.83÷0.21,
≈5÷0.2,
=25;
(6)4.8×0.49,
≈5×0.5,
=0.25.