问题
解答题
|
答案
(1)50×39÷15,
=1950÷15,
=130;
(2)3641-58×24,
=3641-1392,
=2249;
(3)1300-239-261,
=1300-(239+261),
=1300-500,
=800;
(4)145+55×7,
=145+385,
=530.
|
(1)50×39÷15,
=1950÷15,
=130;
(2)3641-58×24,
=3641-1392,
=2249;
(3)1300-239-261,
=1300-(239+261),
=1300-500,
=800;
(4)145+55×7,
=145+385,
=530.