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怎样算简便就怎样算.4.3+0.98+0.75.27-3.9-0.112.75-(2.75+6)1.29+3.7+2.71+6.3.

题目详情
怎样算简便就怎样算.
4.3+0.98+0.7             
5.27-3.9-0.1
12.75-(2.75+6)
1.29+3.7+2.71+6.3.
▼优质解答
答案和解析
(1)4.3+0.98+0.7
=4.3+0.7+0.98
=5+0.98
=5.98             

(2)5.27-3.9-0.1
=5.27-(3.9+0.1)
=5.27-4
=1.27

(3)12.75-(2.75+6)
=12.75-2.75-6
=10-6
=4

(4)1.29+3.7+2.71+6.3
=(1.29+2.71)+(6.3+3.7)
=4+10
=14