问题
解答题
下面各题,怎样简算就怎样算. (1)0.25-
(2)6-
(3)
(4)(
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答案
(1)0.25-
+11 15
-3 4 4 15
=
+1 4
-(3 4
+11 15
),4 15
=1-1,
=0;
(2)6-
÷5 12
-10 9 13 8
=6-
-3 8
,13 8
=6-(
+3 8
),13 8
=6-2,
=4;
(3)
+1 5
÷4 5
×16 75 8 25
=
+1 5
÷4 5
×16 75
,8 25
=
+1 5
×15 4
,8 25
=
+1 5
,6 5
=1
;2 5
(4)(
-5 7
+1 14
)÷5 6 5 42
=(
-5 7
+1 14
)×5 6
,42 5
=
×5 7
-42 5
×1 14
+42 5
×5 6
,42 5
=6-
+73 5
=12
.2 5