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信息发布者：
1.64
+
2.36
-
2.22
-
5.89
-
1
+
0.02
×
0.5
+
7.8
×
0.5
=9.22+0.48
=9.7
=9.71-8.19
=1.52
=2.4-2.3
=0.1
=1.7+8
=9.7
=7-5.48
=1.52
=5.1-5
=0.1
=1.76+0.24+2.83
=2+2.83
=4.83
=5.67-(1.84+1.16)
=5.67-3
=2.67
=(5.8+4.2)×19.6
=10×19.6
=196
6.6-4.36=2.24
4.36-2.24=2.12
答：正确的得数是2.12。
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