问题
解答题
300-2520÷24 简算:(
解比例 X:
|
答案
(1)300-2520÷24,
=300-105
=195;
(2)(
+4 17
)×17×25,1 25
=
×17×25+4 17
×17×25,1 25
=100+17,
=117;
(3)X:
=4:0.5,3 4
0.5x=
×4,3 4
0.5x=3,
0.5x÷0.5=3÷0.5,
x=6.
300-2520÷24 简算:(
解比例 X:
|
(1)300-2520÷24,
=300-105
=195;
(2)(
+4 17
)×17×25,1 25
=
×17×25+4 17
×17×25,1 25
=100+17,
=117;
(3)X:
=4:0.5,3 4
0.5x=
×4,3 4
0.5x=3,
0.5x÷0.5=3÷0.5,
x=6.