问题
解答题
脱式计算.
|
答案
(1)4.82-5.2÷0.8×0.6,
=4.82-6.5×0.6,
=4.82-3.9,
=0.92;
(2)
÷[1÷(5 7
-2 3
)],1 5
=
÷[1÷5 7
],7 15
=
÷5 7
,15 7
=
;1 3
(3)0.8×[1÷(3.2-2.95)],
=0.8×[1÷0.25],
=0.8×4,
=3.2.
脱式计算.
|
(1)4.82-5.2÷0.8×0.6,
=4.82-6.5×0.6,
=4.82-3.9,
=0.92;
(2)
÷[1÷(5 7
-2 3
)],1 5
=
÷[1÷5 7
],7 15
=
÷5 7
,15 7
=
;1 3
(3)0.8×[1÷(3.2-2.95)],
=0.8×[1÷0.25],
=0.8×4,
=3.2.