早教吧 育儿知识 作业答案 考试题库 百科 知识分享

计算下面各题,能简算的要简算.10-3.57-5.4334.82-(3.82+15.2)5.86-0.78+0.2263.7-2.36-13.7-5.64.

题目详情
计算下面各题,能简算的要简算.
10-3.57-5.43 34.82-(3.82+15.2) 5.86-0.78+0.22 63.7-2.36-13.7-5.64.
▼优质解答
答案和解析
(1)10-3.57-5.43,
=10-(3.57+5.43),
=10-9,
=1;

(2)34.82-(3.82+15.2),
=34.82-3.82-15.2,
=31-15.2,
=15.8;

(3)5.86-0.78+0.22,
=5.08+0.22,
=5.3;

(4)63.7-2.36-13.7-5.64,
=63.7-13.7-(5.64+2.36),
=50-8,
=42.