题目内容

计算下列各题,并验算.
9.6+17.4=1.67-0.73=7-1.854=12.78+6.38=
9.6+17.4=27;
9.6
+17.4
27.0

验算:
17.4
+9.6
27.0


1.67-0.73=0.94;
1.67
-0.73
0.94

验算:
0.73
+0.94
1.67


7-1.854=5.146;
7
-1.854
5.146

验算:
1.854
+5.146
7.000



12.78+6.38=19.16;
12.78
+6.38
19.16

验算:
6.38
+12.78
19.16
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