Question

计算下面各题。综合计算，能简便就简便。

• 你的回答被采纳后将获得：
• 系统奖励15（财富值+成长值）+难题奖励20（财富值+成长值）

Answer 1

5.6+2.7+4.5=12.8
9.14-1.43-4.57
=9.14-（1.43+4.57）
=9.14-6
=3.14
77+2.7+2.8+25
=102+5.5
=107.5
0.38+0.36+2.64=3.38
8.7-5.69+2.03
=3.01+2.03
=5.04
5.26+3.43+0.74
=6+3.43
=9.43
51.27-8.03-1.34
=51.27-9.37
=41.9
1.29+3.7+0.71+6.3
=2+10
=12
10.75+0.4-9.86
=11.15-10+0.14
=1.29
3.9+4.08+3.92+1.1
=5+8
=13