来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/10/02 15:58:32
用简便方法计算
(1)3.7×99+3.7
(2)5.93+0.64+0.07+0.36
(3)5.37-1.47-2.53
(4)105×(
(1)3.7×99+3.7
=3.7×(99+1)
=3.7×100
=370;
(2)5.93+0.64+0.07+0.36
=(5.93+0.07)+(0.64+0.36)
=6+1
=7;
(3)5.37-1.47-2.53
=5.37-(1.47+2.53)
=5.37-4
=1.37;
(4)105×(
1
3+
1
5)
=105×
1
3+105×
1
5
=35+21
=56.