问题
解答题
想一想,做一做.
55+(367-289)
(75+225)÷60
350÷(19+51)
答案
(1)55+(367-289)
=55+78
=133;
(2)(75+225)÷60
=300÷60
=5;
(3)350÷(19+51)
=350÷70
=5.
想一想,做一做.
55+(367-289)
(75+225)÷60
350÷(19+51)
(1)55+(367-289)
=55+78
=133;
(2)(75+225)÷60
=300÷60
=5;
(3)350÷(19+51)
=350÷70
=5.