问题
解答题
用适当的方法解答下题
|
答案
(1)4.85×0.17+0.485×8.3,
=0.485×1.7+0.485×8.3,
=0.485×(1.7+8.3),
=0.485×10,
=4.85;
(2)
×87.5+12.5×4 11
-4÷11,4 11
=
×87.5+12.5×4 11
-4 11
,4 11
=
×(87.5+12.5-1),4 11
=
×99,4 11
=36.