问题
解答题
合理、灵活地计算.
|
答案
(1)0.45×14+86×45%,
=0.45×(14+86),
=0.45×100,
=45;
(2)
+2 5
÷3 5
,9 10
=
+2 5
,2 3
=
;16 15
(3)(50%-
)×20,2 5
=
×20-1 2
×20,2 5
=10-8,
=2.
合理、灵活地计算.
|
(1)0.45×14+86×45%,
=0.45×(14+86),
=0.45×100,
=45;
(2)
+2 5
÷3 5
,9 10
=
+2 5
,2 3
=
;16 15
(3)(50%-
)×20,2 5
=
×20-1 2
×20,2 5
=10-8,
=2.