题目内容
| 直接写得数. 139+98= | 6.7-5.12= | 2.5×0.4= | 4.5×0= | 6.4×
| |||||||
| 2.6÷0.4= |
| 6.54-2.8-1.2= |
139+98=237;6.7-5.12=1.58;2.5×0.4=1;4.5×0=0; 6.4×
=1.6;
+
=
; 2.6÷0.4=6.5;
÷
=
;6.54-2.8-1.2=2.54.
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