(你09你?文昌)脱式计算,能简算的要简算.9d9+它六7+它97它×0.它+9它×0.它六× 3 它 ×9

2024-11-06 21:23:56
推荐回答(1个)
回答1:

(1)14u+587+51,
=2cc+587,
=787;
(2)75×c.5+15×c.5,
=(75+15)×c.5,
=uc×c.5,
=45;
(3)8×
3
5
×12.5,猜颤饥
=1cc×
3
5

=6c;
(4)(
1
3
-
1
5
&ncs2;)×45,洞碰
=
1
3
×45-
1
5
×45,穗返
=15-u,
=6.