问题
解答题
计算下列各题,能简算的要简算
|
答案
(1)
×5.16+516%×13 18
,5 18
=
×5.16+5.16×13 18
,5 18
=5.16×(
+13 18
),5 18
=5.16×1,
=5.16;
(2)(
-8 9
)÷(1 3
×7 18
),2 3
=
÷5 9
,7 27
=
;15 7
(3)
×9 10
×4 13
,13 18
=
×(9 10
×4 13
),13 18
=
×9 10
,2 9
=
;1 5
(4)
+47 6
+39 10
+6.1,13 6
=(
+47 6
)+(6.1+3.9),13 6
=10+10,
=20;
(5)
÷(4 5
+1 5
×5 8
),4 7
=
÷(4 5
+1 5
),5 14
=
÷4 5
,39 70
=
;56 39
(6)
×(0.65+1 8
)÷7 20
,1 7
=
×1÷1 8
,1 7
=
×7,1 8
=
.7 8